Mason Investment Advisory Services, Inc.

$2.2B reported 13(f) long value · latest quarter 2026-03-31 · CIK 1635007 · 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: $2.2B
ALL retained default holdings for this (filer, period), including NULL-value ones: 79
positions with no comparable holding in the prior quarter (kind new), 2026-03-31: 3
positions absent from this quarter's filing after being held last quarter (kind exit), 2026-03-31 — inferred from absence, not a sale record: 4

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 `sid:sec:prov:85bbd3b28857c8988aa9b3717f950d84` · issuer key `cusip6:46432F` MSCI USA VALUE	TRIM	+$18.8M	−48,186	$642M	$660M	4,693,071	4,644,885
position key `sid:sec:prov:3fe659bf87a2644a2d7bd1c1995519a0` · issuer key `cusip6:025072` US SML CP VALU	TRIM	+$22.9M	−11,740	$290M	$313M	2,844,838	2,833,098
position key `sid:sec:prov:07646ab00566418db3b000ee163a95ee` · issuer key `cusip6:922042` FTSE SMCAP ETF	TRIM	+$30.9K	−32,484	$278M	$278M	1,937,698	1,905,214
position key `sid:sec:prov:1a16c94e63bc0be2b7b032875805818f` · issuer key `cusip6:025072` INTL SMCP VLU	TRIM	+$8.7M	−55,584	$227M	$236M	2,415,798	2,360,214
position key `sid:sec:prov:42d3b075e1e3cf1fc5578a84c64e757b` · issuer key `cusip6:025072` AVANTIS US SMALL	TRIM	+$11.5M	−21,895	$212M	$223M	3,607,787	3,585,892
position key `sid:sec:prov:a92388cca58a72ee9f19e427b7083baa` · issuer key `cusip6:87283Q` GROWTH ETF	ADD	−$17.8M	+224,702	$239M	$221M	5,391,884	5,616,586
position key `pos:16562` · issuer key `cusip6:922908` SM CP VAL ETF	TRIM	+$1.1M	−2,159	$60.4M	$61.5M	285,194	283,035
position key `sid:sec:prov:2ebeed7ba0c3c8f5495a6059ae850775` · issuer key `cusip6:14020W` SHS CREATION UNI	ADD	−$260K	+14,300	$34.4M	$34.2M	789,138	803,438
position key `pos:13378` · issuer key `cusip6:72201R` ENHAN SHRT MA AC	TRIM	−$2.3M	−23,183	$30.2M	$28.0M	301,338	278,155
position key `sid:sec:prov:58efed45bb6267776f77c3a3479342e3` · issuer key `cusip6:14019W` SHS CREATION UNI	ADD	+$3.0M	+104,326	$20.9M	$23.9M	707,368	811,694
position key `sid:sec:prov:fbe2069936310c4fd1e930d7bd6a6681` · issuer key `cusip6:14020G` SHS CREATION UNI	ADD	+$2.0M	+80,771	$12.6M	$14.7M	284,304	365,075
position key `sid:sec:prov:148ea7e854d33ad2a4eef31dc983a7e9` · issuer key `cusip6:02507A` AVANTIS TOTAL EQ	NEW	+$9.6M	+204,758	$0	$9.6M	—	204,758
position key `sid:sec:prov:beafa1ae0c917b4bc0bad88f645ea4d8` · issuer key `cusip6:25434V` US TARGETED VLU	ADD	+$352K	+30	$7.2M	$7.5M	120,225	120,255
position key `sid:sec:prov:4ae6e5e370779fa3136d4bcb6bdffb76` · issuer key `cusip6:922042` GLB EX US ETF	TRIM	−$230K	−169	$7.3M	$7.1M	160,296	160,127
position key `pos:11570` · issuer key `iss:1599` TR UNIT	TRIM	−$166K	−1	$3.6M	$3.4M	5,252	5,251
position key `pos:14552` · issuer key `iss:711` COM	TRIM	+$801K	−10	$2.0M	$2.8M	16,284	16,274
position key `pos:11717` · issuer key `iss:440` COM	ADD	+$560K	+11	$1.6M	$2.1M	10,246	10,257
position key `pos:11209` · issuer key `cusip6:922908` GROWTH ETF	ADD	+$1.0M	+2,492	$815K	$1.8M	1,671	4,163
position key `sid:sec:prov:365ed936e5e9529653cac956d30ecf93` · issuer key `cusip6:25434V` US CORE EQUITY 2	TRIM	−$43.0K	−377	$1.5M	$1.5M	38,862	38,485
position key `sid:sec:prov:5c0159d8e365eac662fab857eba96ecb` · issuer key `cusip6:92206C` SHORT TERM TREAS	ADD	+$4.1K	+152	$1.5M	$1.5M	25,094	25,246
position key `pos:13215` · issuer key `iss:144` COM	TRIM	−$107K	−65	$1.4M	$1.3M	5,033	4,968
position key `sid:sec:prov:d97f42b79d0eee9ac3bc5b3169c53465` · issuer key `cusip6:464289` CORE 80/20 AGGRE	ADD	+$164K	+1,988	$1.0M	$1.2M	11,456	13,444
position key `sid:sec:prov:89cc3441e94df1e6ade34b90004054c1` · issuer key `cusip6:92204A` ENERGY ETF	ADD	+$332K	+139	$822K	$1.2M	6,528	6,667
position key `pos:12944` · issuer key `cusip6:922908` TOTAL STK MKT	ADD	−$44.1K	+11	$1.1M	$1.1M	3,283	3,294
position key `pos:16249` · issuer key `cusip6:921908` DIV APP ETF	ADD	−$18.9K	+10	$978K	$959K	4,449	4,459
position key `pos:12962` · issuer key `iss:1602` STATE STREET SPD	ADD	−$2.7K	+21	$944K	$941K	16,613	16,634
position key `pos:10986` · issuer key `cusip6:922908` VALUE ETF	ADD	+$117K	+499	$708K	$825K	3,704	4,203
position key `pos:11825` · issuer key `iss:1225` COM	ADD	−$233K	+26	$1.0M	$799K	2,132	2,158
position key `sid:sec:prov:3befb2dfacacebff62a1d992609b2891` · issuer key `cusip6:922907` TAX EXEMPT BD	ADD	+$85.3K	+1,817	$679K	$764K	13,502	15,319
position key `sid:sec:prov:63fa5c7c9852af95fc89e071b88157c3` · issuer key `cusip6:922908` REAL ESTATE ETF	TRIM	−$14.4K	−182	$737K	$723K	8,329	8,147
position key `pos:10737` · issuer key `iss:67` COMMON STOCK	ADD	+$566	+352	$719K	$719K	41,867	42,219
position key `pos:10307` · issuer key `iss:1012` CORE S&P500 ETF	TRIM	−$82.1K	−70	$794K	$712K	1,160	1,090
position key `pos:13780` · issuer key `cusip6:922908` EXTEND MKT ETF	ADD	−$10.2K	+3	$679K	$669K	3,247	3,250
position key `pos:12412` · issuer key `cusip6:921946` HIGH DIV YLD	TRIM	−$5.6K	−179	$655K	$649K	4,563	4,384
position key `sid:sec:prov:0efbc7d8375878c220f88f3581748a46` · issuer key `cusip6:92204A` MATERIALS ETF	TRIM	+$49.6K	−2	$582K	$632K	2,806	2,804
position key `pos:11577` · issuer key `iss:167` COM SHS	TRIM	−$145K	−798	$754K	$608K	5,753	4,955
position key `pos:11695` · issuer key `cusip6:922908` LARGE CAP ETF	TRIM	−$136K	−343	$669K	$533K	2,125	1,782
position key `pos:17821` · issuer key `iss:89` CAP STK CL C	TRIM	−$174K	−396	$707K	$532K	2,252	1,856
position key `sid:sec:prov:127f0021d8310eeeecdea8298c5f12e5` · issuer key `cusip6:922908` S&P 500 ETF SHS	TRIM	−$37.1K	−20	$534K	$497K	851	831
position key `pos:16868` · issuer key `iss:1012` CORE S&P MCP ETF	ADD	+$11.3K	+1	$483K	$494K	7,318	7,319
position key `pos:15142` · issuer key `iss:89` CAP STK CL A	TRIM	−$184K	−465	$626K	$441K	1,999	1,534
position key `pos:17700` · issuer key `iss:1012` RUS 1000 VAL ETF	TRIM	−$310K	−1,506	$742K	$432K	3,528	2,022
position key `pos:16063` · issuer key `iss:1012` RUS MID CAP ETF	ADD	+$4.2K	+1	$413K	$417K	4,287	4,288
position key `pos:11431` · issuer key `cusip6:92206C` INT-TERM CORP	ADD	−$2.3K	+26	$376K	$374K	4,491	4,517
position key `pos:16133` · issuer key `iss:1012` TIPS BD ETF	ADD	+$2.6K	+10	$358K	$360K	3,256	3,266
position key `pos:14175` · issuer key `iss:95` COM	ADD	−$28.0K	+42	$376K	$348K	1,628	1,670
position key `pos:17475` · issuer key `iss:1633` US TIPS ETF	TRIM	−$801	−86	$328K	$328K	12,396	12,310
position key `sid:sec:prov:4ee13837c201cea05a3fc8a370f61521` · issuer key `cusip6:81369Y` STATE STREET ENE	TRIM	+$53.9K	−764	$272K	$326K	6,081	5,317
position key `pos:17409` · issuer key `cusip6:921943` VAN FTSE DEV MKT	ADD	+$8.3K	+8	$301K	$309K	4,815	4,823
position key `pos:10715` · issuer key `iss:916` COM	ADD	−$2.5K	+29	$272K	$269K	790	819
position key `pos:15863` · issuer key `iss:1123` COM	ADD	−$28.1K	+15	$290K	$262K	270	285
position key `pos:12848` · issuer key `iss:1921` COM CL A	ADD	−$36.7K	+5	$276K	$239K	787	792
position key `pos:11967` · issuer key `iss:1000` DORSEY WRGT BASC	ADD	+$18.9K	+2	$212K	$231K	1,929	1,931
position key `pos:11357` · issuer key `iss:969` COM	ADD	+$23.0K	+163	$208K	$231K	1,888	2,051
position key `pos:11205` · issuer key `iss:255` CL B NEW	TRIM	−$14.8K	−7	$245K	$230K	488	481
position key `sid:sec:prov:e51214182cb940aae72b85f99cef57b7` · issuer key `cusip6:87283Q` NATURAL RES ETF	NEW	+$223K	+6,367	$0	$223K	—	6,367
position key `pos:13832` · issuer key `iss:996` COM	ADD	−$89.2K	+40	$307K	$217K	463	503
position key `pos:17467` · issuer key `iss:1751` SPONSORED ADS	NEW	+$203K	+601	$0	$203K	—	601
position key `sid:sec:prov:40b6db994a48a67449e6b25726219ad2` · issuer key `cusip6:921935` SHORT TRM TAX EX	ADD	+$43	+9	$200K	$200K	1,970	1,979
pos:13994	EXIT‡e	−$223K	−3,035	$223K	$0	3,035	—
pos:15702	EXIT‡e	−$289K	−1,174	$289K	$0	1,174	—
pos:16516	EXIT‡e	−$597K	−1,849	$597K	$0	1,849	—
pos:18039	EXIT‡e	−$208K	−645	$208K	$0	645	—

Flags: no row carries a flag.

1–20 of the 63 changes on this page

Mark-to-market only (no share change) · 20

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 `pos:12549` · issuer key `iss:1013` EAFE VALUE ETF	NO CHANGE	+$97.2K	$2.4M	$2.5M	33,071	33,071
position key `pos:16724` · issuer key `iss:1633` FUNDAMENTAL INTL	NO CHANGE	+$167K	$2.0M	$2.2M	44,934	44,934
position key `pos:17814` · issuer key `iss:1981` US MIDCAP FUND	NO CHANGE	+$7.3K	$1.2M	$1.2M	17,434	17,434
position key `pos:17758` · issuer key `iss:1605` UTSER1 S&PDCRP	NO CHANGE	+$23.7K	$1.1M	$1.1M	1,758	1,758
position key `pos:14221` · issuer key `iss:1602` STATE STREET SPD	NO CHANGE	−$47.8K	$1.0M	$994K	12,988	12,988
position key `pos:12710` · issuer key `iss:1013` EAFE SML CP ETF	NO CHANGE	+$10.4K	$916K	$927K	11,818	11,818
position key `sid:sec:prov:2764f4046d00df682a27bc8a55ad27eb` · issuer key `cusip6:78463X` STATE STREET SPD	NO CHANGE	+$149K	$737K	$885K	11,857	11,857
position key `pos:11528` · issuer key `iss:1012` RUS 1000 GRW ETF	NO CHANGE	−$82.8K	$836K	$753K	1,766	1,766
position key `pos:12030` · issuer key `iss:525` COM	NO CHANGE	+$57.8K	$368K	$426K	427	427
position key `pos:17905` · issuer key `iss:1981` US LARGECAP DIVD	NO CHANGE	+$4.7K	$329K	$334K	3,738	3,738
position key `pos:14012` · issuer key `cusip6:921946` INTL HIGH ETF	NO CHANGE	+$14.9K	$316K	$331K	3,514	3,514
position key `pos:11353` · issuer key `iss:1982` INTL QULTY DIV	NO CHANGE	−$10.4K	$321K	$311K	7,748	7,748
position key `pos:11463` · issuer key `iss:1012` CORE S&P TTL STK	NO CHANGE	−$13.4K	$318K	$304K	2,138	2,138
position key `sid:sec:prov:32446a6fa36e5b4f5c24e7390f2b1627` · issuer key `cusip6:00888H` ALLIANZIM US EQT	NO CHANGE	−$2.4K	$301K	$298K	7,685	7,685
position key `pos:11640` · issuer key `iss:1012` CORE S&P US VLU	NO CHANGE	−$719	$269K	$268K	2,620	2,620
position key `sid:sec:prov:3a2de66daf3bb5bb1372492622dfa328` · issuer key `cusip6:78463X` STATE STREET SPD	NO CHANGE	+$8.5K	$254K	$263K	6,221	6,221
position key `pos:14579` · issuer key `iss:1990` SPDR GLD MINIS	NO CHANGE	+$20.3K	$237K	$257K	2,774	2,774
position key `pos:12876` · issuer key `iss:1633` US REIT ETF	NO CHANGE	+$6.7K	$233K	$240K	11,165	11,165
position key `sid:sec:prov:55519c6ca1e80ac9a362cd98ad4885df` · issuer key `cusip6:464289` RUS TP200 GR ETF	NO CHANGE	−$23.3K	$229K	$206K	828	828
position key `pos:16936` · issuer key `cusip6:74017N` COM	NO CHANGE	−$3.1K	$41.8K	$38.7K	10,000	10,000

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

1–49 of 49 issuers · $2.2B disclosed value over 79 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

—

AMERICAN CENTY ETF TR

3 positions · 3 reported rows

Rows Mason Investment Advisory Services, Inc. reported for AMERICAN CENTY ETF TR, as it reported them
AMERICAN CENTY ETF TR · US SML CP VALU CUSIP 025072877 src ↗	$313M	2,833,098
AMERICAN CENTY ETF TR · INTL SMCP VLU CUSIP 025072802 src ↗	$236M	2,360,214
AMERICAN CENTY ETF TR · AVANTIS US SMALL CUSIP 025072323 src ↗	$223M	3,585,892

ticker not yet mapped

$772M

8,779,204

35.6%

—

ISHARES TR · MSCI USA VALUE CUSIP 46432F388
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$660M

4,644,885

30.5%

—

VANGUARD INTL EQUITY INDEX F

2 positions · 2 reported rows

Rows Mason Investment Advisory Services, Inc. reported for VANGUARD INTL EQUITY INDEX F, as it reported them
VANGUARD INTL EQUITY INDEX F · FTSE SMCAP ETF CUSIP 922042718 src ↗	$278M	1,905,214
VANGUARD INTL EQUITY INDEX F · GLB EX US ETF CUSIP 922042676 src ↗	$7.1M	160,127

ticker not yet mapped

$285M

2,065,341

13.2%

—

T ROWE PRICE ETF INC

2 positions · 2 reported rows

Rows Mason Investment Advisory Services, Inc. reported for T ROWE PRICE ETF INC, as it reported them
T ROWE PRICE ETF INC · GROWTH ETF CUSIP 87283Q842 src ↗	$221M	5,616,586
T ROWE PRICE ETF INC · NATURAL RES ETF CUSIP 87283Q743 src ↗	$223K	6,367

ticker not yet mapped

$221M

5,622,953

10.2%

—

VANGUARD INDEX FDS

8 positions · 8 reported rows

Rows Mason Investment Advisory Services, Inc. reported for VANGUARD INDEX FDS, as it reported them
VANGUARD INDEX FDS · SM CP VAL ETF CUSIP — src ↗	$61.5M	283,035
VANGUARD INDEX FDS · GROWTH ETF CUSIP — src ↗	$1.8M	4,163
VANGUARD INDEX FDS · TOTAL STK MKT CUSIP — src ↗	$1.1M	3,294
VANGUARD INDEX FDS · VALUE ETF CUSIP — src ↗	$825K	4,203
VANGUARD INDEX FDS · REAL ESTATE ETF CUSIP 922908553 src ↗	$723K	8,147
VANGUARD INDEX FDS · EXTEND MKT ETF CUSIP — src ↗	$669K	3,250
VANGUARD INDEX FDS · LARGE CAP ETF CUSIP — src ↗	$533K	1,782
VANGUARD INDEX FDS · S&P 500 ETF SHS CUSIP 922908363 src ↗	$497K	831

ticker not yet mapped

$67.6M

308,705

3.1%

—

CAPITAL GROUP DIVIDEND VALUE · SHS CREATION UNI CUSIP 14020W106
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$34.2M

803,438

1.6%

—

PIMCO ETF TR · ENHAN SHRT MA AC CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$28.0M

278,155

1.3%

—

CAPITAL GROUP INTL FOCUS EQT · SHS CREATION UNI CUSIP 14019W109
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$23.9M

811,694

1.1%

—

CAPITAL GROUP GROWTH ETF · SHS CREATION UNI CUSIP 14020G101
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$14.7M

365,075

0.7%

—

AMERICAN CENTY ETF TR · AVANTIS TOTAL EQ CUSIP 02507A606
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$9.6M

204,758

0.4%

—

DIMENSIONAL ETF TRUST

2 positions · 2 reported rows

Rows Mason Investment Advisory Services, Inc. reported for DIMENSIONAL ETF TRUST, as it reported them
DIMENSIONAL ETF TRUST · US TARGETED VLU CUSIP 25434V609 src ↗	$7.5M	120,255
DIMENSIONAL ETF TRUST · US CORE EQUITY 2 CUSIP 25434V708 src ↗	$1.5M	38,485

ticker not yet mapped

$9.0M

158,740

0.4%

—

ISHARES TR

8 positions · 8 reported rows

Rows Mason Investment Advisory Services, Inc. reported for ISHARES TR, as it reported them
ISHARES TR · RUS 1000 GRW ETF CUSIP — src ↗	$753K	1,766
ISHARES TR · CORE S&P500 ETF CUSIP — src ↗	$712K	1,090
ISHARES TR · CORE S&P MCP ETF CUSIP — src ↗	$494K	7,319
ISHARES TR · RUS 1000 VAL ETF CUSIP — src ↗	$432K	2,022
ISHARES TR · RUS MID CAP ETF CUSIP — src ↗	$417K	4,288
ISHARES TR · TIPS BD ETF CUSIP — src ↗	$360K	3,266
ISHARES TR · CORE S&P TTL STK CUSIP — src ↗	$304K	2,138
ISHARES TR · CORE S&P US VLU CUSIP — src ↗	$268K	2,620

ticker not yet mapped

$3.7M

24,509

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)

STATE STR SPDR S&P 500 ETF T · TR UNIT CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

$3.4M

5,251

0.2%

—

ISHARES TR

2 positions · 2 reported rows

Rows Mason Investment Advisory Services, Inc. reported for ISHARES TR, as it reported them
ISHARES TR · EAFE VALUE ETF CUSIP — src ↗	$2.5M	33,071
ISHARES TR · EAFE SML CP ETF CUSIP — src ↗	$927K	11,818

ticker not yet mapped

$3.4M

44,889

0.2%

—

SCHWAB STRATEGIC TR

3 positions · 3 reported rows

Rows Mason Investment Advisory Services, Inc. reported for SCHWAB STRATEGIC TR, as it reported them
SCHWAB STRATEGIC TR · FUNDAMENTAL INTL CUSIP — src ↗	$2.2M	44,934
SCHWAB STRATEGIC TR · US TIPS ETF CUSIP — src ↗	$328K	12,310
SCHWAB STRATEGIC TR · US REIT ETF CUSIP — src ↗	$240K	11,165

ticker not yet mapped

$2.8M

68,409

0.1%

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 2026-05-14 +44d

src ↗

$2.8M

16,274

0.1%

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 2026-05-14 +44d

src ↗

$2.1M

10,257

0.1%

—

SPDR SERIES TRUST

2 positions · 2 reported rows

Rows Mason Investment Advisory Services, Inc. reported for SPDR SERIES TRUST, as it reported them
SPDR SERIES TRUST · STATE STREET SPD CUSIP — src ↗	$994K	12,988
SPDR SERIES TRUST · STATE STREET SPD CUSIP — src ↗	$941K	16,634

ticker not yet mapped

$1.9M

29,622

0.1%

—

VANGUARD SCOTTSDALE FDS

2 positions · 2 reported rows

Rows Mason Investment Advisory Services, Inc. reported for VANGUARD SCOTTSDALE FDS, as it reported them
VANGUARD SCOTTSDALE FDS · SHORT TERM TREAS CUSIP 92206C102 src ↗	$1.5M	25,246
VANGUARD SCOTTSDALE FDS · INT-TERM CORP CUSIP — src ↗	$374K	4,517

ticker not yet mapped

$1.9M

29,763

0.1%

—

VANGUARD WORLD FD

2 positions · 2 reported rows

Rows Mason Investment Advisory Services, Inc. reported for VANGUARD WORLD FD, as it reported them
VANGUARD WORLD FD · ENERGY ETF CUSIP 92204A306 src ↗	$1.2M	6,667
VANGUARD WORLD FD · MATERIALS ETF CUSIP 92204A801 src ↗	$632K	2,804

ticker not yet mapped

$1.8M

9,471

0.1%

—

WISDOMTREE TR

2 positions · 2 reported rows

Rows Mason Investment Advisory Services, Inc. reported for WISDOMTREE TR, as it reported them
WISDOMTREE TR · US MIDCAP FUND CUSIP — src ↗	$1.2M	17,434
WISDOMTREE TR · US LARGECAP DIVD CUSIP — src ↗	$334K	3,738

ticker not yet mapped

$1.5M

21,172

0.1%

—

ISHARES TR

2 positions · 2 reported rows

Rows Mason Investment Advisory Services, Inc. reported for ISHARES TR, as it reported them
ISHARES TR · CORE 80/20 AGGRE CUSIP 464289859 src ↗	$1.2M	13,444
ISHARES TR · RUS TP200 GR ETF CUSIP 464289438 src ↗	$206K	828

ticker not yet mapped

$1.4M

14,272

0.1%

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 2026-05-14 +44d

src ↗

$1.3M

4,968

0.1%

—

SPDR INDEX SHS FDS

2 positions · 2 reported rows

Rows Mason Investment Advisory Services, Inc. reported for SPDR INDEX SHS FDS, as it reported them
SPDR INDEX SHS FDS · STATE STREET SPD CUSIP 78463X541 src ↗	$885K	11,857
SPDR INDEX SHS FDS · STATE STREET SPD CUSIP 78463X871 src ↗	$263K	6,221

ticker not yet mapped

$1.1M

18,078

0.1%

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

STATE STR SPDR S&P MIDCAP 40 · UTSER1 S&PDCRP CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

$1.1M

1,758

0.1%

—

VANGUARD WHITEHALL FDS

2 positions · 2 reported rows

Rows Mason Investment Advisory Services, Inc. reported for VANGUARD WHITEHALL FDS, as it reported them
VANGUARD WHITEHALL FDS · HIGH DIV YLD CUSIP — src ↗	$649K	4,384
VANGUARD WHITEHALL FDS · INTL HIGH ETF CUSIP — src ↗	$331K	3,514

ticker not yet mapped

$980K

7,898

0.0%

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 Mason Investment Advisory Services, Inc. reported for ALPHABET INC, as it reported them
ALPHABET INC · CAP STK CL C CUSIP — src ↗	$532K	1,856
ALPHABET INC · CAP STK CL A CUSIP — src ↗	$441K	1,534

$974K

3,390

0.0%

—

VANGUARD SPECIALIZED FUNDS · DIV APP ETF CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$959K

4,459

0.0%

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 2026-05-14 +44d

src ↗

$799K

2,158

0.0%

—

VANGUARD MUN BD FDS · TAX EXEMPT BD CUSIP 922907746
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$764K

15,319

0.0%

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

ALBERTSONS COS INC · COMMON STOCK CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

$719K

42,219

0.0%

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 2026-05-14 +44d

src ↗

$608K

4,955

0.0%

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

COSTCO WHOLESALE CORPORATION · COM CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

$426K

427

0.0%

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 2026-05-14 +44d

src ↗

$348K

1,670

0.0%

—

SELECT SECTOR SPDR TR · STATE STREET ENE CUSIP 81369Y506
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$326K

5,317

0.0%

—

WISDOMTREE TR · INTL QULTY DIV CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$311K

7,748

0.0%

—

VANGUARD TAX-MANAGED FDS · VAN FTSE DEV MKT CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$309K

4,823

0.0%

—

AIM ETF PRODUCTS TRUST · ALLIANZIM US EQT CUSIP 00888H406
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$298K

7,685

0.0%

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

HOME DEPOT INC · COM CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

$269K

819

0.0%

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 2026-05-14 +44d

src ↗

$262K

285

0.0%

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

WORLD GOLD TR · SPDR GLD MINIS CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

$257K

2,774

0.0%

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 2026-05-14 +44d

src ↗

$239K

792

0.0%

—

INVESCO EXCHANGE TRADED FD T · DORSEY WRGT BASC CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$231K

1,931

0.0%

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

INGREDION INC · COM CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

$231K

2,051

0.0%

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

BERKSHIRE HATHAWAY INC DEL · CL B NEW CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

$230K

481

0.0%

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

INTUIT · COM CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

$217K

503

0.0%

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 2026-05-14 +44d

src ↗

$203K

601

0.0%

—

VANGUARD WELLINGTON FD · SHORT TRM TAX EX CUSIP 921935870
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$200K

1,979

0.0%

—

PRECIGEN INC · COM CUSIP —
2026-03-31 filed 2026-05-14 +44d

src ↗

ticker not yet mapped

$38.7K

10,000

0.0%

1–20 of 49 issuers

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: 98.8%above median 80.0%
Concentration index: 1,646 bpsabove median 446 bps
Positions with value: 79 / 79median 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: 98.8% · integer Herfindahl–Hirschman index in basis points over disclosed position values: 1,646 · QoQ moves: 83

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 Mason Investment Advisory Services, Inc.'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).