CASTLEARK MANAGEMENT LLC

$3.0B reported 13(f) long value · latest quarter 2026-03-31 · CIK 1106832 · EDGAR ↗

sum of disclosed values for 2026-03-31; 0 positions carry a NULL value and are excluded from the sum, surfaced here rather than folded away: $3.0B
ALL retained default holdings for this (filer, period), including NULL-value ones: 292
positions with no comparable holding in the prior quarter (kind new), 2026-03-31: 53
positions absent from this quarter's filing after being held last quarter (kind exit), 2026-03-31 — inferred from absence, not a sale record: 55

A quarter-end snapshot. Filed up to 45 days later, so this page is not current holdings and never a complete portfolio. what a 13F is — and is not ↓ methodology §13F ↗

Position changes — into 2026-03-31

by shares · Δ value · filing link · how changes are classified §

Position changes into quarter 2026-03-31
position matched across quarters by exact reported CUSIP over a registry gap — producer-reconciled identity, never a name match `identity_reconciled_by_cusip`	the reported share count is unchanged across the pair; this build's data classified the change from its reported value; builds from 2026-09-10 on read it as NO CHANGE `classified_by_value` · EXIT = absent this quarter: disposed, delisted, under confidential treatment, or reported instead by an affiliated manager — the filing does not say which · change not classifiable: value undisclosed on one side of the quarter pair, or neither shares nor value can classify it · NO CHANGE = the share count is identical in both quarters; the value moved only with price, so the row is mark-to-market and never an ADD or a TRIM (NEW / ADD / TRIM / EXIT / NO CHANGE) · NO PRIOR = this filer has no comparable holdings list for the previous quarter on record — a first filing under this registration, or a quarter reported inside an affiliated manager's filing — so the position is not called a new stake	derived by Public Filings from the published aggregate; NULL means the source did not disclose a usable value — never zero	reported unit changed across the pair (SH↔PRN); the share delta is withheld rather than fabricated `shares_unit_mismatch`	Prev value	Curr value	Prev shares	Curr shares
position key `pos:15642` · issuer key `iss:1334` COM	TRIM	−$43.2M	−150,134	$263M	$219M	1,408,146	1,258,012
position key `pos:15142` · issuer key `iss:89` CAP STK CL A	ADD	+$753K	+36,380	$119M	$120M	381,639	418,019
position key `pos:11825` · issuer key `iss:1225` COM	TRIM	−$80.9M	−105,358	$179M	$97.8M	369,460	264,102
position key `pos:12578` · issuer key `iss:1602` STATE STREET SPD	ADD	+$5.0M	+169,010	$85.2M	$90.2M	2,519,370	2,688,380
position key `pos:13215` · issuer key `iss:144` COM	TRIM	−$16.4M	−37,030	$105M	$88.8M	387,041	350,011
position key `pos:10455` · issuer key `iss:1091` COM NEW	TRIM	+$8.1M	−36,136	$63.8M	$71.9M	372,876	336,740
position key `pos:11390` · issuer key `iss:720` CL A	ADD	−$9.9M	+1,550	$80.8M	$70.9M	122,415	123,965
position key `sid:sec:prov:3e8440a4e05faf828ae027dc10359b61` · issuer key `cusip6:92206C` MTG-BKD SECS ETF	TRIM	−$10.4M	−217,740	$80.3M	$69.9M	1,705,540	1,487,800
position key `pos:15863` · issuer key `iss:1123` COM	TRIM	−$20.1M	−8,100	$87.7M	$67.6M	81,578	73,478
position key `pos:12827` · issuer key `iss:323` COM	TRIM	−$8.5M	−3,176	$71.3M	$62.7M	205,880	202,704
position key `pos:11577` · issuer key `iss:167` COM SHS	ADD	−$979K	+19,658	$53.9M	$52.9M	411,277	430,935
position key `pos:14175` · issuer key `iss:95` COM	TRIM	−$57.8M	−226,288	$109M	$51.2M	472,149	245,861
position key `pos:10600` · issuer key `iss:821` COM	ADD	+$13.6M	+64,822	$34.0M	$47.7M	277,328	342,150
position key `pos:16131` · issuer key `iss:1632` COM	TRIM	−$14.8M	−118,482	$62.2M	$47.4M	622,535	504,053
position key `pos:12848` · issuer key `iss:1921` COM CL A	TRIM	−$13.3M	−16,652	$59.8M	$46.5M	170,478	153,826
position key `pos:14206` · issuer key `iss:1193` CL A	TRIM	−$12.5M	−10,438	$58.5M	$46.0M	102,451	92,013
position key `pos:18191` · issuer key `iss:1654` CL A SUB VTG SHS	TRIM	−$18.8M	−34,792	$55.6M	$36.8M	345,382	310,590
position key `pos:17386` · issuer key `iss:806` COM	TRIM	+$5.0M	−6,252	$31.2M	$36.2M	47,741	41,489
position key `sid:sec:prov:7202fea486129d5c8347b02887ba22e3` · issuer key `cusip6:92206C` LG-TERM COR BD	ADD	+$15.6M	+211,880	$17.9M	$33.5M	236,450	448,330
position key `pos:13683` · issuer key `iss:1648` COM	ADD	−$9.7M	+33,336	$41.4M	$31.8M	270,420	303,756
position key `pos:14225` · issuer key `iss:1758` COM	ADD	+$10.7M	+62,386	$18.2M	$28.9M	142,084	204,470
position key `pos:17724` · issuer key `iss:576` COM	NEW	+$28.7M	+145,020	$0	$28.7M	—	145,020
position key `pos:11717` · issuer key `iss:440` COM	NEW	+$28.3M	+136,550	$0	$28.3M	—	136,550
position key `pos:16193` · issuer key `iss:1909` COM CL A	TRIM	+$7.9M	−12,374	$20.2M	$28.2M	124,737	112,363
position key `pos:17630` · issuer key `iss:1849` COM	ADD	−$3.8M	+688	$30.2M	$26.5M	49,941	50,629
position key `pos:14307` · issuer key `iss:127` COM	ADD	+$8.2M	+16,736	$16.6M	$24.8M	61,172	77,908
position key `pos:10665` · issuer key `iss:222` CL A	ADD	+$21.2M	+334,110	$2.4M	$23.6M	53,080	387,190
position key `pos:10854` · issuer key `iss:300` COM	TRIM	−$8.7M	−576	$29.3M	$20.6M	5,472	4,896
position key `pos:11122` · issuer key `iss:1684` COM SHS	TRIM	−$12.6M	−15,148	$33.2M	$20.5M	151,192	136,044
position key `pos:16619` · issuer key `iss:1524` COM	ADD	+$15.9M	+336,500	$2.6M	$18.5M	74,020	410,520
position key `pos:14060` · issuer key `iss:47` COM	TRIM	−$4.3M	−15,792	$22.4M	$18.1M	104,746	88,954
position key `pos:11039` · issuer key `iss:352` COM	NEW	+$16.8M	+129,150	$0	$16.8M	—	129,150
position key `pos:13589` · issuer key `iss:584` COM	TRIM	+$6.7M	−2,740	$8.9M	$15.6M	184,989	182,249
position key `pos:15965` · issuer key `iss:175` SPONSORED ADR	ADD	+$1.3M	+1,280	$14.1M	$15.5M	66,336	67,616
position key `pos:10381` · issuer key `iss:49` COM	TRIM	+$4.8M	−2,510	$10.3M	$15.0M	49,133	46,623
position key `pos:18039` · issuer key `iss:1025` COM	ADD	+$480K	+5,890	$14.4M	$14.9M	44,635	50,525
position key `pos:17626` · issuer key `iss:860` COM	TRIM	−$2.1M	−4,760	$16.9M	$14.8M	165,043	160,283
position key `pos:10357` · issuer key `iss:1786` COM	ADD	+$1.9M	+11,080	$12.6M	$14.6M	28,100	39,180
position key `pos:17467` · issuer key `iss:1751` SPONSORED ADS	ADD	+$2.9M	+4,920	$11.0M	$13.9M	36,290	41,210
position key `pos:10925` · issuer key `iss:1309` CLASS A COM	ADD	+$4.6M	+8,590	$9.2M	$13.8M	105,484	114,074
position key `pos:17456` · issuer key `iss:1440` CLASS A COM	NEW	+$13.5M	+630,980	$0	$13.5M	—	630,980
position key `pos:18178` · issuer key `iss:747` COM	ADD	+$3.5M	+9,530	$9.8M	$13.3M	61,200	70,730
position key `pos:11213` · issuer key `iss:1227` COM	TRIM	−$19.6M	−310,620	$32.8M	$13.2M	515,494	204,874
position key `pos:10505` · issuer key `iss:1912` COM	ADD	+$6.4M	+29,227	$6.2M	$12.6M	349,370	378,597
position key `pos:12576` · issuer key `iss:622` COM	TRIM	+$1.3M	−11,920	$11.0M	$12.3M	205,765	193,845
position key `pos:12696` · issuer key `iss:1845` COM	TRIM	−$13.0M	−139,260	$25.3M	$12.2M	309,136	169,876
position key `pos:13043` · issuer key `iss:1012` 20 YR TR BD ETF	ADD	+$3.7M	+42,730	$8.2M	$11.9M	94,540	137,270
position key `pos:15502` · issuer key `iss:616` COM	TRIM	−$1.9M	−5,660	$12.9M	$11.0M	38,166	32,506
position key `pos:14552` · issuer key `iss:711` COM	NEW	+$10.9M	+64,460	$0	$10.9M	—	64,460
position key `pos:18251` · issuer key `iss:315` COM	ADD	+$4.6M	+88,600	$5.9M	$10.5M	158,600	247,200
position key `pos:13659` · issuer key `iss:897` COM	ADD	+$2.5M	+13,660	$7.8M	$10.4M	146,749	160,409
position key `pos:12588` · issuer key `iss:1120` COM NEW	TRIM	−$2.9M	−18,040	$12.6M	$9.7M	66,736	48,696
position key `pos:15560` · issuer key `iss:1973` COM	ADD	+$2.0M	+6,040	$7.6M	$9.6M	125,730	131,770
position key `pos:18119` · issuer key `iss:641` COM	ADD	+$2.8M	+10,380	$6.6M	$9.4M	263,504	273,884
position key `pos:18060` · issuer key `iss:2229` COM	TRIM	+$393K	−65,710	$9.0M	$9.3M	200,886	135,176
position key `pos:10262` · issuer key `iss:2280` SHS NEW	NEW	+$9.3M	+53,240	$0	$9.3M	—	53,240
position key `pos:10637` · issuer key `iss:1883` COM	ADD	+$3.6M	+17,430	$5.6M	$9.2M	32,656	50,086
position key `pos:14655` · issuer key `iss:2143` SHS USD	NEW	+$9.2M	+48,740	$0	$9.2M	—	48,740
position key `pos:12270` · issuer key `iss:750` COM	TRIM	+$59.0K	−8,230	$9.1M	$9.2M	48,340	40,110
position key `pos:14403` · issuer key `iss:693` CLASS A	TRIM	−$1.8M	−1,630	$10.9M	$9.1M	32,046	30,416
position key `pos:11477` · issuer key `iss:1832` COM	ADD	+$2.1M	+14,220	$6.9M	$9.0M	102,220	116,440
position key `pos:15471` · issuer key `iss:1750` COM	TRIM	−$210K	−40,620	$9.1M	$8.9M	131,850	91,230
position key `pos:13706` · issuer key `iss:804` COM	TRIM	−$99.0K	−26,400	$9.0M	$8.9M	514,400	488,000
position key `pos:18272` · issuer key `iss:886` COM	ADD	+$2.9M	+21,800	$6.0M	$8.9M	72,901	94,701
position key `pos:13344` · issuer key `iss:2148` ORD SHS CL A	TRIM	+$812K	−10,680	$7.9M	$8.7M	192,192	181,512
position key `pos:12492` · issuer key `iss:810` COM NEW	TRIM	−$10.2M	−30,700	$18.9M	$8.7M	61,380	30,680
position key `pos:17743` · issuer key `iss:1718` COM	TRIM	+$1.8M	−1,130	$6.8M	$8.6M	22,330	21,200
position key `pos:12515` · issuer key `iss:1689` COM SHS	NEW	+$8.6M	+113,050	$0	$8.6M	—	113,050
position key `pos:15395` · issuer key `iss:638` COM	ADD	+$7.7M	+321,440	$781K	$8.5M	34,510	355,950
position key `pos:15974` · issuer key `iss:1099` COM	ADD	+$2.0M	+2,620	$6.6M	$8.5M	89,019	91,639
position key `pos:17821` · issuer key `iss:89` CAP STK CL C	ADD	+$6.3M	+22,610	$2.2M	$8.5M	7,000	29,610
position key `pos:12239` · issuer key `iss:1607` COM	TRIM	−$1.7M	−8,260	$10.0M	$8.3M	49,827	41,567
position key `pos:11125` · issuer key `iss:1642` COM	ADD	+$699K	+4,800	$7.6M	$8.3M	102,958	107,758
position key `sid:sec:prov:9886204f7314eeb6ea4d19d9d7721d16` · issuer key `cusip6:78468R` STATE STREET SPD	NEW	+$8.2M	+45,340	$0	$8.2M	—	45,340
position key `pos:10427` · issuer key `iss:1241` COM	ADD	+$6.6M	+25,890	$1.6M	$8.2M	11,960	37,850
position key `pos:10784` · issuer key `iss:324` COM	NEW	+$8.2M	+598,454	$0	$8.2M	—	598,454
position key `pos:16881` · issuer key `iss:1079` COM	ADD	+$957K	+2,370	$7.2M	$8.2M	29,260	31,630
position key `pos:11066` · issuer key `iss:15` COM STK	TRIM	+$42.1K	−10,730	$8.1M	$8.1M	210,993	200,263
position key `pos:13464` · issuer key `iss:303` COM	TRIM	+$968K	−8,830	$7.1M	$8.1M	157,336	148,506
position key `pos:11917` · issuer key `iss:177` COM	ADD	+$594K	+21,850	$7.5M	$8.1M	289,573	311,423
position key `pos:15214` · issuer key `iss:1462` COM CL A	TRIM	+$304K	−103,820	$7.7M	$8.0M	389,470	285,650
position key `pos:14112` · issuer key `iss:159` COM	ADD	+$2.8M	+26,150	$5.2M	$7.9M	48,500	74,650
position key `sid:sec:prov:07df79d236bd2b44122da9ec24db0a18` · issuer key `cusip6:71742Q` CL A COM	NEW	+$7.9M	+142,900	$0	$7.9M	—	142,900
position key `pos:13559` · issuer key `iss:1959` COM	TRIM	−$606K	−5,840	$8.4M	$7.8M	34,237	28,397
position key `pos:12719` · issuer key `iss:1076` COM NEW	TRIM	−$3.9M	−43,270	$11.6M	$7.7M	152,904	109,634
position key `pos:17542` · issuer key `iss:193` COM	NEW	+$7.6M	+31,940	$0	$7.6M	—	31,940
position key `pos:18003` · issuer key `iss:1117` COM CL A	NEW	+$7.6M	+264,789	$0	$7.6M	—	264,789
position key `pos:15755` · issuer key `iss:1719` COM	ADD	−$4.8M	+3,480	$12.3M	$7.5M	98,530	102,010
position key `pos:18254` · issuer key `iss:289` COM CL A	TRIM	+$1.4M	−14,570	$6.0M	$7.5M	69,615	55,045
position key `pos:16504` · issuer key `iss:1251` COM	NEW	+$7.4M	+16,900	$0	$7.4M	—	16,900
position key `pos:13318` · issuer key `iss:1660` COM NEW	ADD	+$1.8M	+92,280	$5.5M	$7.3M	283,527	375,807
position key `pos:15053` · issuer key `iss:1066` CL A	NEW	+$7.3M	+126,030	$0	$7.3M	—	126,030
position key `pos:11989` · issuer key `iss:1806` COM	ADD	+$1.5M	+10,310	$5.6M	$7.0M	41,093	51,403
position key `pos:10808` · issuer key `iss:1080` COM	NEW	+$7.0M	+106,380	$0	$7.0M	—	106,380
position key `pos:11237` · issuer key `iss:1601` GOLD SHS	TRIM	+$472K	−200	$6.5M	$7.0M	16,435	16,235
position key `pos:14561` · issuer key `iss:945` COM	ADD	+$4.2M	+21,766	$2.8M	$6.9M	38,690	60,456
position key `sid:sec:prov:fa36e00268ee3d6d74f8ff5697fdd99c` · issuer key `cusip6:03969K` COM	TRIM	−$2.1M	−15,970	$9.0M	$6.9M	309,430	293,460
position key `pos:13041` · issuer key `iss:1415` COM	ADD	+$1.1M	+8,340	$5.8M	$6.9M	53,840	62,180
position key `pos:15311` · issuer key `iss:724` COM	ADD	+$6.6M	+141,770	$278K	$6.9M	6,920	148,690
position key `pos:16208` · issuer key `iss:1420` COM CL A	NEW	+$6.9M	+270,770	$0	$6.9M	—	270,770

Flags: no row carries a flag.

1–20 of the 100 changes on this page

Mark-to-market only (no share change) · 73

Positions whose share count is identical in both quarters; the value changed with price, not with a decision.

Positions held with no share change into quarter 2026-03-31
position matched across quarters by exact reported CUSIP over a registry gap — producer-reconciled identity, never a name match `identity_reconciled_by_cusip`	the reported share count is unchanged across the pair; this build's data classified the change from its reported value; builds from 2026-09-10 on read it as NO CHANGE `classified_by_value` · EXIT = absent this quarter: disposed, delisted, under confidential treatment, or reported instead by an affiliated manager — the filing does not say which · change not classifiable: value undisclosed on one side of the quarter pair, or neither shares nor value can classify it · NO CHANGE = the share count is identical in both quarters; the value moved only with price, so the row is mark-to-market and never an ADD or a TRIM (NEW / ADD / TRIM / EXIT / NO CHANGE) · NO PRIOR = this filer has no comparable holdings list for the previous quarter on record — a first filing under this registration, or a quarter reported inside an affiliated manager's filing — so the position is not called a new stake	derived by Public Filings from the published aggregate; NULL means the source did not disclose a usable value — never zero	Prev value	Curr value	Prev shares	Curr shares
position key `sid:sec:prov:b01efafd9c52181221003a3f82558332` · issuer key `cusip6:46429B` US TREAS BD ETF	NO CHANGE	−$383K	$76.7M	$76.3M	3,329,569	3,329,569
position key `sid:sec:prov:8b57560043266bcb6e19f900348f25bb` · issuer key `cusip6:78468R` STATE STREET SPD	NO CHANGE	−$133K	$39.1M	$38.9M	1,334,080	1,334,080
position key `pos:16971` · issuer key `iss:1013` 10-20 YR TRS ETF	NO CHANGE	−$246K	$26.3M	$26.0M	258,432	258,432
position key `pos:14874` · issuer key `iss:1013` MBS ETF	NO CHANGE	−$55.1K	$19.4M	$19.4M	204,235	204,235
position key `pos:17899` · issuer key `iss:1745` COM	NO CHANGE	+$552K	$13.9M	$14.5M	90,620	90,620
position key `pos:13490` · issuer key `iss:1939` COM	NO CHANGE	+$1.5M	$12.6M	$14.1M	113,270	113,270
position key `pos:10953` · issuer key `iss:1013` ISHS 5-10YR INVT	NO CHANGE	−$172K	$14.0M	$13.8M	259,994	259,994
position key `pos:10141` · issuer key `iss:1602` STATE STREET SPD	NO CHANGE	+$469K	$9.9M	$10.3M	80,890	80,890
position key `pos:13432` · issuer key `iss:411` COM	NO CHANGE	+$1.9M	$8.0M	$9.9M	13,920	13,920
position key `sid:sec:prov:2b5902c05a996d81adf5ce01e71326f4` · issuer key `cusip6:81369Y` STATE STREET HEA	NO CHANGE	−$460K	$8.7M	$8.2M	56,130	56,130
position key `pos:16532` · issuer key `iss:812` COM	NO CHANGE	−$677K	$8.1M	$7.4M	99,280	99,280
position key `sid:sec:prov:bf88c0643d7dc790ff58066578bc3ed8` · issuer key `cusip6:84858T` SELECT STOXX EUR	NO CHANGE	−$204K	$6.2M	$6.0M	147,000	147,000
position key `pos:17700` · issuer key `iss:1012` RUS 1000 VAL ETF	NO CHANGE	+$80.1K	$5.1M	$5.1M	24,040	24,040
position key `pos:13390` · issuer key `iss:656` COM UT LTD PTN	NO CHANGE	+$669K	$3.9M	$4.6M	238,240	238,240
position key `pos:15847` · issuer key `iss:759` COM	NO CHANGE	−$601K	$5.0M	$4.4M	380,230	380,230
position key `pos:10715` · issuer key `iss:916` COM	NO CHANGE	−$196K	$4.4M	$4.2M	12,860	12,860
position key `pos:14135` · issuer key `iss:1060` COM	NO CHANGE	+$693K	$3.2M	$3.8M	114,730	114,730
position key `pos:13899` · issuer key `iss:1563` COM CL A	NO CHANGE	−$2.2M	$5.7M	$3.5M	50,330	50,330
position key `pos:16467` · issuer key `iss:480` COM CL A	NO CHANGE	−$908K	$4.0M	$3.1M	17,630	17,630
position key `pos:11173` · issuer key `iss:995` UNIT SER 1	NO CHANGE	−$198K	$3.3M	$3.1M	5,320	5,320
position key `pos:13340` · issuer key `iss:666` COM	NO CHANGE	+$459K	$2.5M	$3.0M	79,461	79,461
position key `pos:12030` · issuer key `iss:525` COM	NO CHANGE	+$375K	$2.4M	$2.8M	2,800	2,800
position key `pos:12684` · issuer key `iss:650` COM	NO CHANGE	+$318K	$2.4M	$2.7M	50,340	50,340
position key `pos:17062` · issuer key `iss:1174` CL A	NO CHANGE	+$724K	$1.6M	$2.4M	74,790	74,790
position key `pos:18016` · issuer key `iss:1012` RUS MD CP GR ETF	NO CHANGE	−$141K	$2.2M	$2.0M	16,000	16,000
position key `pos:15350` · issuer key `iss:2111` SHS	NO CHANGE	+$377K	$1.5M	$1.9M	7,826	7,826
position key `pos:13722` · issuer key `iss:158` COM	NO CHANGE	+$445K	$1.3M	$1.8M	50,690	50,690
position key `pos:18087` · issuer key `iss:578` COM	NO CHANGE	+$2.7K	$1.7M	$1.7M	8,440	8,440
position key `pos:12577` · issuer key `iss:1126` COM	NO CHANGE	+$63.2K	$1.6M	$1.7M	6,700	6,700
position key `pos:11528` · issuer key `iss:1012` RUS 1000 GRW ETF	NO CHANGE	−$177K	$1.8M	$1.6M	3,770	3,770
position key `pos:10460` · issuer key `iss:1459` UNIT LTD PARTN	NO CHANGE	+$308K	$1.3M	$1.6M	70,459	70,459
position key `pos:12231` · issuer key `iss:551` COMMON STOCK	NO CHANGE	+$147K	$1.2M	$1.3M	9,830	9,830
position key `pos:14207` · issuer key `iss:973` COM PAR $.01	NO CHANGE	−$82.0K	$1.4M	$1.3M	7,790	7,790
position key `pos:13903` · issuer key `iss:354` COM NEW	NO CHANGE	+$35.0K	$1.1M	$1.1M	6,600	6,600
position key `pos:13590` · issuer key `iss:1189` COM	NO CHANGE	−$59.8K	$1.1M	$1.0M	1,760	1,760
position key `pos:15442` · issuer key `iss:356` COM	NO CHANGE	+$75.7K	$928K	$1.0M	3,400	3,400
position key `pos:17694` · issuer key `iss:1732` COM UT REP LP	NO CHANGE	+$181K	$757K	$939K	14,450	14,450
position key `pos:17533` · issuer key `iss:1509` COM	NO CHANGE	−$294K	$1.2M	$895K	6,950	6,950
position key `pos:14171` · issuer key `iss:1813` COM	NO CHANGE	−$132K	$1.0M	$892K	770	770
position key `pos:13255` · issuer key `cusip6:65342K` COM	NO CHANGE	+$254K	$560K	$814K	106,250	106,250
position key `pos:11849` · issuer key `iss:104` COM	NO CHANGE	−$180K	$990K	$809K	2,675	2,675
position key `pos:12131` · issuer key `iss:1401` COM	NO CHANGE	+$34.6K	$632K	$667K	5,774	5,774
position key `pos:13415` · issuer key `iss:2242` SHS	NO CHANGE	+$206K	$454K	$661K	12,210	12,210
position key `pos:16805` · issuer key `iss:997` COM NEW	NO CHANGE	−$126K	$680K	$553K	1,200	1,200
position key `pos:14992` · issuer key `iss:1485` COM	NO CHANGE	+$4.3K	$545K	$549K	3,800	3,800
position key `pos:18221` · issuer key `iss:1739` COM	NO CHANGE	−$100K	$644K	$544K	1,372	1,372
position key `sid:sec:prov:ce29ae22e152cd83a649b6cec7e758aa` · issuer key `cusip6:90290N` COM UNIT LTDPAR	NO CHANGE	+$82.4K	$460K	$542K	19,990	19,990
position key `sid:sec:prov:cfd8e6b12a549d6edf90187f5c06812a` · issuer key `cusip6:371927` UNIT LTD PARTN	NO CHANGE	+$66.9K	$468K	$535K	29,980	29,980
position key `pos:12194` · issuer key `iss:1195` COM	NO CHANGE	+$173K	$354K	$528K	8,350	8,350
position key `pos:12349` · issuer key `iss:93` COM NEW CL A	NO CHANGE	+$128K	$374K	$502K	10,370	10,370
position key `pos:17845` · issuer key `iss:455` COM	NO CHANGE	−$56.0K	$557K	$501K	2,960	2,960
position key `pos:12449` · issuer key `iss:621` COM	NO CHANGE	+$119K	$315K	$434K	3,000	3,000
position key `pos:16012` · issuer key `iss:1713` COM	NO CHANGE	+$24.9K	$389K	$414K	4,620	4,620
position key `pos:17674` · issuer key `iss:728` COM	NO CHANGE	+$67.3K	$289K	$356K	1,000	1,000
position key `pos:10586` · issuer key `iss:1908` COM	NO CHANGE	−$5.0K	$331K	$326K	730	730
position key `pos:10493` · issuer key `iss:471` COM	NO CHANGE	+$20.9K	$237K	$258K	3,397	3,397
position key `pos:16738` · issuer key `iss:1252` CL A	NO CHANGE	+$42.2K	$209K	$252K	860	860
position key `sid:sec:prov:2ca9fa7939e913d15f6840dc7dfbd123` · issuer key `cusip6:464286` MSCI CDA ETF	NO CHANGE	+$3.2K	$198K	$201K	3,670	3,670
position key `pos:15592` · issuer key `iss:954` COM	NO CHANGE	+$10.8K	$190K	$200K	770	770
position key `pos:11070` · issuer key `iss:813` COM	NO CHANGE	−$12.2K	$201K	$188K	8,620	8,620
position key `pos:11393` · issuer key `iss:545` COM	NO CHANGE	+$8.3K	$153K	$161K	300	300
position key `pos:10783` · issuer key `iss:1822` COM	NO CHANGE	−$28.3K	$169K	$141K	2,160	2,160
position key `pos:13160` · issuer key `iss:1012` MSCI EMG MKT ETF	NO CHANGE	+$4.2K	$109K	$114K	2,000	2,000
position key `pos:15220` · issuer key `iss:1725` COM	NO CHANGE	−$7.8K	$120K	$112K	340	340
position key `pos:14143` · issuer key `iss:748` COM	NO CHANGE	−$22.7K	$134K	$112K	2,000	2,000
position key `pos:13891` · issuer key `iss:1313` CL B	NO CHANGE	−$21.8K	$127K	$106K	2,000	2,000
position key `sid:sec:prov:cb5e7ff2563f749504b428e0411ec81f` · issuer key `cusip6:464286` MSCI AUST ETF	NO CHANGE	+$5.9K	$98.7K	$105K	3,770	3,770
position key `pos:10790` · issuer key `iss:1444` COM	NO CHANGE	+$9.4K	$74.0K	$83.4K	2,971	2,971
position key `pos:18256` · issuer key `iss:1701` COM	NO CHANGE	−$5.9K	$64.5K	$58.6K	1,560	1,560
position key `pos:10940` · issuer key `iss:1517` COM	NO CHANGE	−$2.7K	$60.3K	$57.7K	580	580
position key `pos:14952` · issuer key `iss:731` COM	NO CHANGE	+$4.8K	$35.7K	$40.5K	140	140
position key `pos:14282` · issuer key `iss:1417` COM	NO CHANGE	−$7.2K	$40.4K	$33.2K	360	360
position key `sid:sec:prov:e7f112277413db78c47072ed9dcfe559` · issuer key `cusip6:81211K` COM	NO CHANGE	+$446	$29.8K	$30.3K	720	720

Flags: no row carries a flag.

Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.

Truncated by Public Filings. Changes compare every position with a security identifier, new and exited included; holdings without one are counted, not compared. methodology §13F ↗

Reported positions — 2026-03-31

1–100 of 275 issuers · $3.0B disclosed value over 292 rows · 0 undisclosed-value rows

View

This build carries one quarter for this manager: 2026-03-31. Notable managers carry four published quarters, others two.

This list carries reported issuer names and security identities, without a dated ticker mapping. Symbols are not inferred from names.

a position composed from a base filing plus NEW-HOLDINGS amendments keeps every source row here; the composition's latest filed date is the one shown served from this build's published holdings (derived from the filer's own reported rows); every row resolves to its filing

Share of total reported value, calculated only when the full position list has disclosed values. This is 13F long value, not total assets.

value undisclosed on the filing: retained and counted, excluded from sums, never shown as $0

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

NVIDIA CORPORATION · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$219M

1,258,012

7.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ALPHABET INC

2 positions · 2 reported rows

Rows CASTLEARK MANAGEMENT LLC reported for ALPHABET INC, as it reported them
ALPHABET INC · CAP STK CL A CUSIP — src ↗	$120M	418,019
ALPHABET INC · CAP STK CL C CUSIP — src ↗	$8.5M	29,610

$129M

447,629

4.3%

—

VANGUARD SCOTTSDALE FDS

2 positions · 2 reported rows

Rows CASTLEARK MANAGEMENT LLC reported for VANGUARD SCOTTSDALE FDS, as it reported them
VANGUARD SCOTTSDALE FDS · MTG-BKD SECS ETF CUSIP 92206C771 src ↗	$69.9M	1,487,800
VANGUARD SCOTTSDALE FDS · LG-TERM COR BD CUSIP 92206C813 src ↗	$33.5M	448,330

ticker not yet mapped

$103M

1,936,130

3.4%

—

SPDR SERIES TRUST

2 positions · 2 reported rows

Rows CASTLEARK MANAGEMENT LLC reported for SPDR SERIES TRUST, as it reported them
SPDR SERIES TRUST · STATE STREET SPD CUSIP — src ↗	$90.2M	2,688,380
SPDR SERIES TRUST · STATE STREET SPD CUSIP — src ↗	$10.3M	80,890

ticker not yet mapped

$101M

2,769,270

3.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

MICROSOFT CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$97.8M

264,102

3.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

APPLE INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$88.8M

350,011

2.9%

—

ISHARES TR · US TREAS BD ETF CUSIP 46429B267
2026-03-31 filed 2026-05-15 +45d

src ↗

ticker not yet mapped

$76.3M

3,329,569

2.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

LAM RESEARCH CORP · COM NEW CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$71.9M

336,740

2.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

META PLATFORMS INC · CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$70.9M

123,965

2.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ELI LILLY & CO · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$67.6M

73,478

2.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BROADCOM INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$62.7M

202,704

2.1%

—

ISHARES TR

3 positions · 3 reported rows

Rows CASTLEARK MANAGEMENT LLC reported for ISHARES TR, as it reported them
ISHARES TR · 10-20 YR TRS ETF CUSIP — src ↗	$26.0M	258,432
ISHARES TR · MBS ETF CUSIP — src ↗	$19.4M	204,235
ISHARES TR · ISHS 5-10YR INVT CUSIP — src ↗	$13.8M	259,994

ticker not yet mapped

$59.3M

722,661

2.0%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ARISTA NETWORKS INC · COM SHS CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$52.9M

430,935

1.8%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

AMAZON COM INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$51.2M

245,861

1.7%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

GILEAD SCIENCES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$47.7M

342,150

1.6%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SCHWAB CHARLES CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$47.4M

504,053

1.6%

—

SPDR SERIES TRUST

2 positions · 2 reported rows

Rows CASTLEARK MANAGEMENT LLC reported for SPDR SERIES TRUST, as it reported them
SPDR SERIES TRUST · STATE STREET SPD CUSIP 78468R101 src ↗	$38.9M	1,334,080
SPDR SERIES TRUST · STATE STREET SPD CUSIP 78468R556 src ↗	$8.2M	45,340

ticker not yet mapped

$47.2M

1,379,420

1.6%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

VISA INC · COM CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$46.5M

153,826

1.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

MASTERCARD INCORPORATED · CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$46.0M

92,013

1.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SHOPIFY INC · CL A SUB VTG SHS CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$36.8M

310,590

1.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

GE VERNOVA INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$36.2M

41,489

1.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SERVICENOW INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$31.8M

303,756

1.1%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TAPESTRY INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$28.9M

204,470

1.0%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

DIAMONDBACK ENERGY INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$28.7M

145,020

0.9%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

CHEVRON CORPORATION · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$28.3M

136,550

0.9%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

VERTIV HOLDINGS CO · COM CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$28.2M

112,363

0.9%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ULTA BEAUTY INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$26.5M

50,629

0.9%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ANALOG DEVICES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$24.8M

77,908

0.8%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BAKER HUGHES COMPANY · CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$23.6M

387,190

0.8%

—

ISHARES TR

9 positions · 9 reported rows

Rows CASTLEARK MANAGEMENT LLC reported for ISHARES TR, as it reported them
ISHARES TR · 20 YR TR BD ETF CUSIP — src ↗	$11.9M	137,270
ISHARES TR · RUS 1000 VAL ETF CUSIP — src ↗	$5.1M	24,040
ISHARES TR · RUS MD CP GR ETF CUSIP — src ↗	$2.0M	16,000
ISHARES TR · RUS 1000 GRW ETF CUSIP — src ↗	$1.6M	3,770
ISHARES TR · IBOXX INV CP ETF CUSIP — src ↗	$1.1M	10,060
ISHARES TR · EUROPE ETF CUSIP — src ↗	$822K	12,100
ISHARES TR · RUS 2000 GRW ETF CUSIP — src ↗	$377K	1,200
ISHARES TR · RUS 2000 VAL ETF CUSIP — src ↗	$201K	1,060
ISHARES TR · MSCI EMG MKT ETF CUSIP — src ↗	$114K	2,000

ticker not yet mapped

$23.3M

207,500

0.8%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BOOKING HOLDINGS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$20.6M

4,896

0.7%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SNOWFLAKE INC · COM SHS CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$20.5M

136,044

0.7%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

RANGE RES CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$18.5M

410,520

0.6%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ADVANCED MICRO DEVICES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$18.1M

88,954

0.6%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

CF INDUSTRIES HOLD · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$16.8M

129,150

0.6%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

DIGITALOCEAN HLDGS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$15.6M

182,249

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ASCENDIS PHARMA A/S · SPONSORED ADR CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$15.5M

67,616

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ADVANCED ENERGY INDS · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$15.0M

46,623

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

JPMORGAN CHASE & CO · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$14.9M

50,525

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

GUARDANT HEALTH INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$14.8M

160,283

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TESLA INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$14.6M

39,180

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TJX COS INC NEW · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$14.5M

90,620

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

WALMART INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$14.1M

113,270

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TAIWAN SEMICONDUCTOR MANUFAC · SPONSORED ADS CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$13.9M

41,210

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

NEXTPOWER INC · CLASS A COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$13.8M

114,074

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

PERMIAN RESOURCES CORP · CLASS A COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$13.5M

630,980

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

FIRSTCASH HOLDINGS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$13.3M

70,730

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

MICROCHIP TECHNOLOGY INC. · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$13.2M

204,874

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

VIAVI SOLUTIONS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$12.6M

378,597

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

EQT CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$12.3M

193,845

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

UBER TECHNOLOGIES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$12.2M

169,876

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

DYCOM INDS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$11.0M

32,506

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

EXXON MOBIL CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$10.9M

64,460

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BRIGHTSPRING HEALTH SVCS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$10.5M

247,200

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

HELIOS TECHNOLOGIES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$10.4M

160,409

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

CATERPILLAR INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.9M

13,920

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

LIGAND PHARMACEUTICALS INC · COM NEW CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.7M

48,696

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

WILLIAMS COS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.6M

131,770

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ELEMENT SOLUTIONS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.4M

273,884

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TECHNIPFMC PLC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.3M

135,176

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TOWER SEMICONDUCTOR LTD · SHS NEW CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.3M

53,240

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

VSE CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.2M

50,086

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

JAZZ PHARMACEUTICALS PLC · SHS USD CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.2M

48,740

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

FIVE BELOW INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.2M

40,110

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

EVERCORE INC · CLASS A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.1M

30,416

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TUTOR PERINI CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.0M

116,440

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TTM TECHNOLOGIES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.9M

91,230

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

GARRETT MOTION INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.9M

488,000

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

HASBRO INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.9M

94,701

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

KINIKSA PHARMACEUTICALS INTL · ORD SHS CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.7M

181,512

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

GE AEROSPACE · COM NEW CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.7M

30,680

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

STERLING INFRASTRUCTURE INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.6M

21,200

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SOLSTICE ADVANCED MATLS INC · COM SHS CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.6M

113,050

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ELANCO ANIMAL HEALTH INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.5M

355,950

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

LATTICE SEMICONDUCTOR CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.5M

91,639

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SPX TECHNOLOGIES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.3M

41,567

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SEMTECH CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.3M

107,758

0.3%

—

SELECT SECTOR SPDR TR · STATE STREET HEA CUSIP 81369Y209
2026-03-31 filed 2026-05-15 +45d

src ↗

ticker not yet mapped

$8.2M

56,130

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

MODINE MFG CO · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.2M

37,850

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BROOKDALE SR LIVING INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.2M

598,454

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

KRYSTAL BIOTECH INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.2M

31,630

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

API GROUP CORP · COM STK CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.1M

200,263

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BORGWARNER INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.1M

148,506

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ASSOCIATED BANC-CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.1M

311,423

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

PLANET LABS PBC · COM CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.0M

285,650

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ARCOSA INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.9M

74,650

0.3%

—

PHIBRO ANIMAL HEALTH CORP · CL A COM CUSIP 71742Q106
2026-03-31 filed 2026-05-15 +45d

src ↗

ticker not yet mapped

$7.9M

142,900

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

WESCO INTL INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.8M

28,397

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

KRATOS DEFENSE & SEC SOLUTIO · COM NEW CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.7M

109,634

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

AUTODESK INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.6M

31,940

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

LIBERTY ENERGY INC · COM CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.6M

264,789

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

STIFEL FINL CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.5M

102,010

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BLOOM ENERGY CORP · COM CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.5M

55,045

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

GENERAL MTRS CO · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.4M

99,280

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

MOODYS CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.4M

16,900

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

QXO INC · COM NEW CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.3M

375,807

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

KNIGHT-SWIFT TRANSN HLDGS IN · CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.3M

126,030

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TOLL BROTHERS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.0M

51,403

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

KULICKE & SOFFA INDS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.0M

106,380

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SPDR GOLD TR · GOLD SHS CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.0M

16,235

0.2%

1–20 of the 100 issuers on this page

Change kind and share change are in Position changes above; Congress overlap is planned.

One line per issuer, largest first; a row with no issuer key stands on its own line. Open a line for its rows as this filer reported them. The list holds every row this filer reported for the quarter. Issuer totals on the holders pages count each manager's own report once; that never removes a row here. how positions are grouped ↗

Book shape

2026-03-31 · concentration · vs tracked median · tick = median

Top-25 concentration: 52.6%below median 80.0%
Concentration index: 170 bpsbelow median 446 bps
Positions with value: 292 / 292median book 97.5 positions

Concentration uses reported 13F long value, not total assets. The index is withheld when any position lacks a value. Medians are over the 8,748 tracked filers with a 2026-03-31 book; the index median over the 8,662 with a complete book.

holdings whose <value> did not parse — retained and counted, never zero-filled: 0 · share of the period's disclosed value held in the top-N positions; denominator is reported 13F value, not total assets: 52.6% · integer Herfindahl–Hirschman index in basis points over disclosed position values: 170 · QoQ moves: 347

Filing history

AVAILABLE QUARTERS

Available filing periods
Period	Source
2026-03-31	EDGAR ↗

PLANNED sector rotation · Congress overlap · signals for this filer

Complete source filings on SEC EDGAR

The complete filing on EDGAR.

The position list above is served from the published Public Filings build, each position as this filer reported it; where the page cannot embed every reported row, the list says how many it leaves out. This block is provenance, not a substitute: the filing itself is the record, and it is one click away. Public Filings decided on 2026-08-01 to serve this list from its published build; filings newer than this build are on EDGAR.

Open CASTLEARK MANAGEMENT LLC's 13F filings on SEC EDGAR ↗

Notes on this data

Reported positions

Quarter-end holdings as filed

Explore the full published position list and its source filing. This record excludes the manager’s cash, shorts and non-13(f) assets.

Share changes

Compare consecutive quarters

Position changes retain the producer’s classification and comparability flags. Share counts and reported values describe different changes.

Coverage

A snapshot, not current holdings

Use the quarter selector to inspect available periods. Unknown values stay unknown and each table states its coverage.

A 13F is a quarterly, long-only snapshot filed up to 45 days late — not current holdings. what a 13F covers ↗

13F reports cover LONG positions in Section 13(f) securities (US exchange-traded equities plus reportable options, warrants, certain convertibles) held by managers with at least $100M in such securities — so managers below that threshold are absent entirely. No short positions, no cash, no non-13(f) assets — not a full portfolio, and not a census of institutional ownership.

Positions are quarter-end snapshots filed up to 45 days late — not current holdings. A position may have been changed or closed before you ever see it, and is older still by however long ago that quarter ended.

Values are the manager's stated market value at quarter-end in era-dependent units (whole dollars for form versions effective 2023-01-03 onward, thousands before), normalized here to whole dollars with unit_basis carried on every record.

Affiliated managers may report the same position (otherManager), so one position can appear under more than one filer.

Positions under confidential treatment may be omitted until a later amendment discloses them.

These are disclosures, not investment advice (ARCHITECTURE.md §5.2 / M2-CONTRACT §5).