Who holds ticker verified against the SEC company list on 2026-09-10 — a reviewed name-and-class mapping row, never an inferred symbol. how tickers are mapped ↗

BOSTON SCIENTIFIC CORP · COM · quarter ended 2026-03-31 · 19 members disclosed BSX ↗

13F filers reporting this class for the quarter ended 2026-03-31; 1–500 of 1,354 holders are listed, largest first: 1,354
sum of the reported values across every holder; NULL values are excluded, never zero-filled: $74.5B
holders whose share count rose or who opened the position (new + add), by shares: 692
holders absent this quarter after holding last quarter — inferred from absence, not a sale record: 286

Holders — quarter ended 2026-03-31

ranked by reported value · Δ shares vs 2025-12-31 · kind by shares

13F holders of BSX ranked by reported value
#	Filer	Reported value	Shares	Δ shares	Change
1	BlackRock, Inc.	$8.3B	131,822,037	−4,165,208	TRIM
2	VANGUARD CAPITAL MANAGEMENT LLC	$6.0B	96,411,568	—	NO PRIOR
3	FMR LLC	$4.7B	74,226,395	−23,160,546	TRIM
4	STATE STREET CORP	$4.3B	67,986,847	+2,140,788	ADD
5	GEODE CAPITAL MANAGEMENT, LLC	$2.1B	33,285,757	+901,992	ADD
6	PRIMECAP MANAGEMENT CO/CA/	$2.0B	32,529,774	+1,433,590	ADD
7	VANGUARD PORTFOLIO MANAGEMENT LLC	$1.9B	29,796,211	—	NO PRIOR
8	D. E. Shaw & Co., Inc.	$1.5B	24,312,352	+13,063,148	ADD
9	BANK OF AMERICA CORP /DE/	$1.4B	22,756,646	−2,358,539	TRIM
10	MORGAN STANLEY	$1.4B	22,266,664	−693,892	TRIM
11	WELLINGTON MANAGEMENT GROUP LLP	$1.2B	18,833,406	+9,124,317	ADD
12	Janus Henderson Group Ltd.	$1.0B	16,497,366	+3,907,981	ADD
13	Capital World Investors	$961M	15,309,738	−11,841,837	TRIM
14	UBS Group AG	$930M	14,824,662	−47,464	TRIM
15	FRANKLIN RESOURCES INC	$910M	14,498,741	+8,822,659	ADD
16	Amundi	$886M	14,122,913	+1,707,754	ADD
17	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	$872M	13,891,668	+2,856,040	ADD
18	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	$848M	13,513,771	+2,576,814	ADD
19	NORTHERN TRUST CORP	$839M	13,373,881	−561,542	TRIM
20	DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main	$830M	13,229,644	−5,311,049	TRIM
21	Nuveen, LLC	$736M	11,734,314	+2,362,020	ADD
22	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	$717M	10,996,572	+1,911,044	ADD
23	Legal & General Group Plc	$665M	10,600,766	−275,851	TRIM
24	Assenagon Asset Management S.A.	$631M	10,057,936	+5,751,760	ADD
25	Bank of New York Mellon Corp	$599M	9,543,875	−1,680,922	TRIM
26	TWO SIGMA INVESTMENTS, LP	$591M	9,411,231	+6,939,887	ADD
27	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	$575M	9,170,180	+223,677	ADD
28	Invesco Ltd.	$568M	9,051,941	−4,266,236	TRIM
29	VANGUARD FIDUCIARY TRUST CO	$526M	8,382,185	—	NO PRIOR
30	CANADA PENSION PLAN INVESTMENT BOARD	$504M	8,035,947	+1,174,187	ADD
31	PARNASSUS INVESTMENTS, LLC	$502M	8,003,820	+104,580	ADD
32	Vontobel Holding Ltd.	$501M	7,978,214	+4,214,425	ADD
33	EDGEWOOD MANAGEMENT LLC	$479M	7,629,399	−173,866	TRIM
34	FARALLON CAPITAL MANAGEMENT, L.L.C.	$469M	7,470,684	—	NO PRIOR
35	1832 Asset Management L.P.	$455M	7,252,746	+5,051,088	ADD
36	SCHRODER INVESTMENT MANAGEMENT GROUP	$455M	7,252,007	−1,097,634	TRIM
37	Capital Research Global Investors	$444M	7,080,887	−3,168	TRIM
38	BNP Paribas Asset Management Holding S.A.	$437M	6,966,229	−756,851	TRIM
39	DEUTSCHE BANK AG\	$417M	6,653,275	−94,905	TRIM
40	ROYAL BANK OF CANADA	$394M	6,273,263	+721,691	ADD
41	DIMENSIONAL FUND ADVISORS LP	$383M	6,097,777	+362,547	ADD
42	Qube Research & Technologies Ltd	$350M	5,569,880	+63,975	ADD
43	AMERIPRISE FINANCIAL INC	$349M	5,573,439	−857,645	TRIM
44	AQR CAPITAL MANAGEMENT LLC	$327M	5,239,836	+4,142,091	ADD
45	Pictet Asset Management Holding SA	$321M	5,120,057	+820,284	ADD
46	BARCLAYS PLC	$315M	5,024,157	+663,465	ADD
47	FIRST MANHATTAN CO. LLC.	$308M	4,911,217	+3,029,280	ADD
48	LAZARD ASSET MANAGEMENT LLC	$306M	4,880,504	+970,473	ADD
49	ADAGE CAPITAL PARTNERS GP, L.L.C.	$291M	4,633,237	+2,550,877	ADD
50	Ensign Peak Advisors, Inc	$283M	4,507,242	+2,929,480	ADD
51	Swiss National Bank	$273M	4,350,600	+290,100	ADD
52	CITADEL ADVISORS LLC	$265M	4,217,314	−558,304	TRIM
53	MAVERICK CAPITAL LTD	$263M	4,195,089	+1,250,835	ADD
54	JANE STREET GROUP, LLC	$253M	4,032,117	+238,881	ADD
55	MILLENNIUM MANAGEMENT LLC	$241M	4,337,804	−6,926,986	TRIM
56	Man Group plc	$233M	3,718,731	−673,994	TRIM
57	National Pension Service	$232M	3,698,745	+3,698,745	NEW
58	Point72 Asset Management, L.P.	$231M	3,687,315	+1,252,752	ADD
59	Holocene Advisors, LP	$215M	3,428,736	−1,042,353	TRIM
60	Sumitomo Mitsui Trust Group, Inc.	$215M	3,422,813	−34,648	TRIM
61	HSBC HOLDINGS PLC	$213M	3,399,703	−3,824,801	TRIM
62	Mitsubishi UFJ Asset Management Co., Ltd.	$211M	3,364,108	+253,039	ADD
63	Vanguard Global Advisers, LLC	$204M	3,244,238	—	NO PRIOR
64	FIL Ltd	$202M	3,214,116	−1,543,963	TRIM
65	RENAISSANCE TECHNOLOGIES LLC	$198M	3,152,005	+769,300	ADD
66	RAYMOND JAMES FINANCIAL INC	$190M	3,029,097	−503,955	TRIM
67	WELLS FARGO & COMPANY/MN	$186M	2,971,322	−1,165,706	TRIM
68	Alecta Tjanstepension Omsesidigt	$180M	2,865,900	+122,800	ADD
69	Unisphere Establishment	$176M	2,802,700	+626,000	ADD
70	Aberdeen Group plc	$174M	2,766,280	+121,968	ADD
71	MANUFACTURERS LIFE INSURANCE COMPANY, THE	$165M	2,629,613	+1,601,237	ADD
72	AMERICAN CENTURY COMPANIES INC	$164M	2,617,803	−1,984,391	TRIM
73	VANGUARD ASSET MANAGEMENT, Ltd	$161M	2,567,095	—	NO PRIOR
74	Mariner, LLC	$156M	2,484,960	+2,053,754	ADD
75	ALLIANCEBERNSTEIN L.P.	$155M	1,625,785	−1,174,944	TRIM
76	Temasek Holdings (Private) Ltd	$151M	2,399,426	+317,800	ADD
77	Allianz Asset Management GmbH	$150M	2,393,824	+394,232	ADD
78	ORBIMED ADVISORS LLC	$149M	2,382,100	−37,200	TRIM
79	BANK OF NOVA SCOTIA	$145M	2,303,011	+308,930	ADD
80	Clearbridge Investments, LLC	$143M	2,279,418	+1,546,181	ADD
81	WORLDQUANT MILLENNIUM ADVISORS LLC	$143M	2,274,140	−1,112,856	TRIM
82	CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	$142M	2,261,265	−750,748	TRIM
83	Ilex Capital Partners (UK) LLP	$140M	2,234,180	+633,379	ADD
84	MILFORD FUNDS LTD	$139M	2,210,221	+1,394,942	ADD
85	Mirova US LLC	$138M	2,203,401	+833,372	ADD
86	Employees Provident Fund Board	$134M	2,134,591	0	NO CHANGE
87	PUBLIC SECTOR PENSION INVESTMENT BOARD	$130M	2,077,623	+661,315	ADD
88	SEB Asset Management AB	$130M	2,076,524	—	NO PRIOR
89	CREDIT AGRICOLE S A	$127M	2,021,577	−152,420	TRIM
90	STIFEL FINANCIAL CORP	$124M	1,978,011	−136,486	TRIM
91	CIBC Bancorp USA Inc.	$122M	1,941,425	—	NO PRIOR
92	GREAT LAKES ADVISORS, LLC	$118M	1,878,772	+101,996	ADD
93	NEW YORK STATE COMMON RETIREMENT FUND	$114M	1,812,953	+4,000	ADD
94	TD ASSET MANAGEMENT INC	$113M	1,799,116	−66,285	TRIM
95	Zurcher Kantonalbank (Zurich Cantonalbank)	$112M	1,791,149	+1,791,149	NEW
96	ENVESTNET ASSET MANAGEMENT INC	$106M	1,686,819	−920,221	TRIM
97	PRINCIPAL FINANCIAL GROUP INC	$106M	1,686,453	+14,795	ADD
98	Alphinity Investment Management Pty Ltd	$105M	1,673,285	−979,237	TRIM
99	CONGRESS ASSET MANAGEMENT CO	$102M	1,629,485	−20,473	TRIM
100	Squarepoint Ops LLC	$99.8M	1,589,914	−1,445,374	TRIM
101	CITIGROUP INC	$98.9M	1,576,640	+220,141	ADD
102	Navera Investment Management Ltd.	$97.7M	1,558,014	+1,558,014	NEW
103	Phoenix Financial Ltd.	$97.3M	1,550,372	+1,485,404	ADD
104	PRUDENTIAL FINANCIAL INC	$97.2M	1,548,562	−35,873	TRIM
105	Universal- Beteiligungs- und Servicegesellschaft mbH	$96.7M	1,541,012	+159,346	ADD
106	AVIVA PLC	$93.4M	1,488,608	+2,896	ADD
107	CAISSE DE DEPOT ET PLACEMENT DU QUEBEC	$93.2M	1,485,451	+39,359	ADD
108	Bellevue Group AG	$92.0M	1,466,894	−92,712	TRIM
109	GROUPAMA ASSET MANAGMENT	$86.3M	1,375,261	+8,356	ADD
110	BALYASNY ASSET MANAGEMENT L.P.	$85.1M	1,356,133	−1,125,616	TRIM
111	Eurizon Capital SGR S.p.A.	$84.8M	1,348,483	+50,550	ADD
112	MENORA MIVTACHIM HOLDINGS LTD.	$83.7M	1,333,500	+1,333,500	NEW
113	BANK OF MONTREAL /CAN/	$83.1M	1,324,527	−715,839	TRIM
114	NORDEA INVESTMENT MANAGEMENT AB	$82.1M	1,330,037	+1,182,755	ADD
115	STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM	$80.9M	1,288,698	0	NO CHANGE
116	Cerity Partners LLC	$79.3M	1,263,755	−1,769	TRIM
117	Candriam S.C.A.	$79.2M	1,261,461	+131,623	ADD
118	NATIONAL BANK OF CANADA /FI/	$79.1M	1,260,894	−15,341	TRIM
119	Swedbank AB	$79.0M	1,259,158	−2,170,686	TRIM
120	STOREBRAND ASSET MANAGEMENT AS	$75.1M	1,196,979	—	NO PRIOR
121	Korea Investment CORP	$71.2M	1,134,530	−284,721	TRIM
122	Schonfeld Strategic Advisors LLC	$69.4M	1,105,515	+506,234	ADD
123	Allspring Global Investments Holdings, LLC	$67.8M	1,093,483	−1,079,916	TRIM
124	VOLORIDGE INVESTMENT MANAGEMENT, LLC	$67.7M	1,078,109	−725,804	TRIM
125	FEDERATED HERMES, INC.	$65.3M	1,040,857	−636,029	TRIM
126	SUSQUEHANNA INTERNATIONAL GROUP, LLP	$64.8M	1,033,109	+477,139	ADD
127	SEI INVESTMENTS CO	$64.1M	1,021,347	−1,185,973	TRIM
128	NOMURA ASSET MANAGEMENT CO LTD	$63.7M	1,015,421	+108,521	ADD
129	Federation des caisses Desjardins du Quebec	$62.6M	998,249	+337,704	ADD
130	Danica Pension, Livsforsikringsaktieselskab	$60.9M	970,286	−1,024,443	TRIM
131	MACKENZIE FINANCIAL CORP	$60.2M	959,867	−1,107,981	TRIM
132	Longaeva Partners L.P.	$60.1M	957,306	+957,306	NEW
133	AMF Tjanstepension AB	$59.7M	951,982	−968	TRIM
134	HOMESTEAD ADVISERS CORP	$59.1M	942,062	+395,000	ADD
135	PFA Pension, Forsikringsaktieselskab	$58.1M	925,491	+925,491	NEW
136	BANQUE PICTET & CIE SA	$57.8M	921,164	+650,293	ADD
137	Harvest Portfolios Group Inc.	$57.5M	916,981	+319,640	ADD
138	JENNISON ASSOCIATES LLC	$56.3M	897,775	−4,570,520	TRIM
139	ABN AMRO INVESTMENT SOLUTIONS	$56.1M	894,310	+207,303	ADD
140	Lansforsakringar Fondforvaltning AB (publ)	$56.1M	893,749	+102,573	ADD
141	Fisher Funds Management LTD	$54.0M	860,964	+490,387	ADD
142	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	$53.6M	854,345	+118,493	ADD
143	LPL Financial LLC	$53.2M	848,038	−857,789	TRIM
144	Walleye Capital LLC	$52.5M	835,952	−1,205,462	TRIM
145	DANSKE BANK A/S	$52.4M	834,747	−30,315	TRIM
146	STATE OF WISCONSIN INVESTMENT BOARD	$52.3M	833,955	+66,101	ADD
147	PANAGORA ASSET MANAGEMENT INC	$51.6M	822,114	−667,070	TRIM
148	Calamos Advisors LLC	$51.3M	817,686	−53,971	TRIM
149	Connor, Clark & Lunn Investment Management Ltd.	$50.7M	807,369	−11,547	TRIM
150	Banque Transatlantique SA	$50.2M	798,907	−412,424	TRIM
151	Vestal Point Capital, LP	$50.2M	800,000	+800,000	NEW
152	BSN Capital Partners Ltd	$50.2M	500,000	—	NO PRIOR
153	Prosight Management, LP	$49.9M	795,547	+585,547	ADD
154	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	$49.5M	789,092	+210,489	ADD
155	Asset Management One Co., Ltd.	$48.8M	778,376	−100,729	TRIM
156	APG Asset Management N.V.	$48.8M	896,449	−93,130	TRIM
157	NICHOLAS COMPANY, INC.	$46.5M	741,274	+114,116	ADD
158	Vanguard Investments Australia, Ltd.	$46.3M	737,743	—	NO PRIOR
159	SANDS CAPITAL MANAGEMENT, LLC	$46.2M	736,109	−69,055	TRIM
160	EDMOND DE ROTHSCHILD HOLDING S.A.	$46.1M	734,725	+685,813	ADD
161	Chevy Chase Trust Holdings, LLC	$46.0M	733,131	−18,976	TRIM
162	UniSuper Management Pty Ltd	$45.2M	719,670	−41,014	TRIM
163	Rockefeller Capital Management L.P.	$44.7M	711,941	+116,003	ADD
164	COMPASS CAPITAL MANAGEMENT, INC	$44.6M	710,874	+126,806	ADD
165	Mitsubishi UFJ Trust & Banking Corp	$44.3M	705,994	−41,152	TRIM
166	ZWJ INVESTMENT COUNSEL INC	$44.2M	704,102	+133,091	ADD
167	CI INVESTMENTS INC.	$44.1M	703,393	−517,759	TRIM
168	TOCQUEVILLE ASSET MANAGEMENT L.P.	$42.6M	678,172	+234,444	ADD
169	Quadrature Capital Ltd	$42.0M	670,091	+670,091	NEW
170	ROYAL LONDON ASSET MANAGEMENT LTD	$41.8M	665,891	−7,360	TRIM
171	Bank Pictet & Cie (Europe) AG	$40.2M	641,234	+486,715	ADD
172	KLP KAPITALFORVALTNING AS	$40.0M	636,756	+26,200	ADD
173	TUDOR INVESTMENT CORP ET AL	$39.7M	632,552	−100,286	TRIM
174	AustralianSuper Pty Ltd	$39.4M	628,448	−608,743	TRIM
175	BRADLEY FOSTER & SARGENT INC/CT	$39.4M	627,470	+134,550	ADD
176	Rhenman & Partners Asset Management AB	$39.2M	625,000	+193,793	ADD
177	PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	$38.0M	605,201	−21,255	TRIM
178	Saudi Central Bank	$37.2M	593,534	+54,106	ADD
179	Mawer Investment Management Ltd.	$37.0M	589,659	+543,460	ADD
180	POLEN CAPITAL MANAGEMENT LLC	$36.4M	579,739	−3,439,813	TRIM
181	Quantinno Capital Management LP	$36.0M	574,482	−105,556	TRIM
182	DSM CAPITAL PARTNERS LLC	$35.4M	564,349	+559,625	ADD
183	US BANCORP \DE\	$35.2M	561,708	+212,029	ADD
184	Integral Health Asset Management, LLC	$34.5M	550,000	+325,000	ADD
185	MKP Capital Management, L.L.C.	$34.4M	549,000	+549,000	NEW
186	NATIXIS	$33.9M	540,063	−13,948	TRIM
187	FIFTH THIRD BANCORP	$33.4M	532,886	+230,377	ADD
188	DnB Asset Management AS	$33.1M	527,264	+152,707	ADD
189	IMC-Chicago, LLC	$32.7M	520,435	+449,345	ADD
190	Rock Springs Capital Management LP	$32.3M	515,300	+116,250	ADD
191	State of New Jersey Common Pension Fund D	$31.7M	504,452	0	NO CHANGE
192	Migdal Insurance & Financial Holdings Ltd.	$31.4M	500,000	+500,000	NEW
193	GATEWAY INVESTMENT ADVISERS LLC	$31.3M	499,538	−81,371	TRIM
194	VICTORY CAPITAL MANAGEMENT INC	$31.2M	497,031	+15,762	ADD
195	Fiera Capital Corp	$31.2M	496,423	+174,940	ADD
196	NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	$31.0M	494,519	+494,519	NEW
197	Aquatic Capital Management LLC	$30.8M	490,622	+456,434	ADD
198	United Super Pty Ltd in its capacity as Trustee for the Construction & Building Unions Superannuation Fund	$30.7M	489,571	+381,683	ADD
199	Hudson Bay Capital Management LP	$30.4M	484,000	0	NO CHANGE
200	ASR Vermogensbeheer N.V.	$30.4M	483,854	+6,526	ADD
201	Gotham Asset Management, LLC	$30.3M	482,978	+323,810	ADD
202	ASSOCIATED BANC-CORP	$30.1M	480,358	+106,526	ADD
203	Cetera Investment Advisers	$29.7M	473,400	+23,257	ADD
204	OFI INVEST ASSET MANAGEMENT	$29.4M	538,807	+204,565	ADD
205	Resona Asset Management Co.,Ltd.	$29.1M	464,125	+9,180	ADD
206	ANCHOR CAPITAL ADVISORS LLC	$29.1M	463,696	+4,399	ADD
207	FJARDE AP-FONDEN /FOURTH SWEDISH NATIONAL PENSION FUND	$29.0M	461,370	+176,800	ADD
208	Fisher Asset Management, LLC	$28.3M	450,603	−8,687,613	TRIM
209	Y-Intercept (Hong Kong) Ltd	$28.3M	450,271	+387,819	ADD
210	Parkman Healthcare Partners LLC	$28.2M	448,768	−51,761	TRIM
211	TORONTO DOMINION BANK	$28.1M	448,198	−575,853	TRIM
212	OSTERWEIS CAPITAL MANAGEMENT INC	$27.7M	442,192	+172,712	ADD
213	ABN AMRO Bank N.V.	$27.7M	438,340	−134,842	TRIM
214	ING GROEP NV	$27.5M	438,266	+292,042	ADD
215	TEACHER RETIREMENT SYSTEM OF TEXAS	$27.3M	435,798	−116,868	TRIM
216	DKRT Investments Corp.	$27.3M	435,000	+435,000	NEW
217	VOYA INVESTMENT MANAGEMENT LLC	$26.5M	422,418	−1,748,264	TRIM
218	Focus Partners Wealth	$25.9M	411,492	−171,753	TRIM
219	Arizona State Retirement System	$25.5M	406,216	−14,715	TRIM
220	Czech National Bank	$25.3M	403,894	+12,997	ADD
221	ATALANTA SOSNOFF CAPITAL, LLC	$25.3M	402,714	−249,281	TRIM
222	Creative Planning	$25.0M	397,852	+79,480	ADD
223	Tredje AP-fonden	$24.9M	396,064	−750,825	TRIM
224	OSAIC HOLDINGS, INC.	$24.7M	393,586	−35,170	TRIM
225	STATE OF MICHIGAN RETIREMENT SYSTEM	$24.3M	387,408	−700	TRIM
226	Skandinaviska Enskilda Banken AB (publ)	$24.3M	387,252	−2,447,803	TRIM
227	Trexquant Investment LP	$24.2M	385,491	+67,145	ADD
228	Caption Management, LLC	$23.5M	374,400	+283,400	ADD
229	CIBC Asset Management Inc	$23.3M	371,626	+5,659	ADD
230	FORA Capital, LLC	$23.3M	370,934	+359,135	ADD
231	Daiwa Securities Group Inc.	$23.2M	369,351	+14,052	ADD
232	NS Partners Ltd	$22.5M	358,580	−676	TRIM
233	MetLife Investment Management, LLC	$22.5M	357,894	−9,647	TRIM
234	Mirae Asset Global Investments Co., Ltd.	$21.9M	349,519	+28,353	ADD
235	Groupe la Francaise	$21.9M	346,901	−178,527	TRIM
236	BRAIDWELL LP	$21.7M	346,467	+346,467	NEW
237	COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	$21.7M	345,459	+635	ADD
238	LBP AM SA	$21.2M	337,335	−97,058	TRIM
239	SUMITOMO MITSUI FINANCIAL GROUP, INC.	$21.0M	334,764	+64,889	ADD
240	IFM Investors Pty Ltd	$20.9M	332,339	+8,151	ADD
241	EASTERN BANK	$20.8M	331,456	+50,829	ADD
242	MAI Capital Management	$20.7M	330,209	+168,770	ADD
243	ODDO BHF ASSET MANAGEMENT SAS	$20.5M	327,138	−240,766	TRIM
244	Retirement Systems of Alabama	$19.8M	314,932	−434	TRIM
245	IEQ CAPITAL, LLC	$19.6M	312,659	+232,814	ADD
246	LGT Group Foundation	$19.6M	312,602	−1,172	TRIM
247	TRILLIUM ASSET MANAGEMENT, LLC	$19.6M	296,120	+135,776	ADD
248	ExodusPoint Capital Management, LP	$19.5M	311,363	+138,963	ADD
249	BlueSpruce Investments, LP	$19.2M	306,134	+306,134	NEW
250	Banco Santander, S.A.	$19.1M	304,049	+248,992	ADD
251	Engineers Gate Manager LP	$18.9M	300,831	−406,066	TRIM
252	Catalio Capital Management, LP	$18.8M	299,318	−61,110	TRIM
253	WATERS PARKERSON & CO., LLC	$18.5M	295,177	+30,693	ADD
254	XPONANCE LLC	$18.5M	294,885	+31,983	ADD
255	TD Waterhouse Canada Inc.	$18.5M	298,238	+141,363	ADD
256	Eagle Health Investments LP	$18.4M	293,152	+293,152	NEW
257	Woodline Partners LP	$18.2M	290,453	−489,451	TRIM
258	XTX Topco Ltd	$18.2M	289,670	+233,385	ADD
259	Varma Mutual Pension Insurance Co	$17.6M	280,181	0	NO CHANGE
260	Capital International Sarl	$17.5M	279,338	−136,380	TRIM
261	RENAISSANCE GROUP LLC	$17.4M	276,752	−17,572	TRIM
262	Zurich Insurance Group Ltd/FI	$17.1M	272,168	+272,168	NEW
263	USS Investment Management Ltd	$16.9M	269,031	+11,950	ADD
264	Chicago Capital, LLC	$16.9M	268,870	−321,989	TRIM
265	WAYCROSS PARTNERS, LLC	$16.8M	267,646	+242,646	ADD
266	MML INVESTORS SERVICES, LLC	$16.7M	265,785	−2,271	TRIM
267	O'SHAUGHNESSY ASSET MANAGEMENT, LLC	$16.7M	265,431	−11,558	TRIM
268	B. Metzler seel. Sohn & Co. AG	$16.6M	265,133	+26,456	ADD
269	Mediolanum International Funds Ltd	$16.5M	262,599	−88,211	TRIM
270	SIRIOS CAPITAL MANAGEMENT L P	$16.2M	257,907	+171,706	ADD
271	Gradient Investments LLC	$16.1M	257,268	+23,007	ADD
272	ZACKS INVESTMENT MANAGEMENT	$16.1M	257,129	+1,439	ADD
273	Generate Investment Management Ltd	$16.0M	254,250	−94,670	TRIM
274	NISA INVESTMENT ADVISORS, LLC	$15.8M	251,661	−121,170	TRIM
275	Brookstone Capital Management	$15.7M	250,231	+67,034	ADD
276	ProShare Advisors LLC	$15.7M	249,935	−56,234	TRIM
277	Utah Retirement Systems	$15.1M	239,896	−3,983	TRIM
278	Cornerstone Advisors, LLC	$15.0M	239,655	+136,419	ADD
279	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	$15.0M	239,915	+11,013	ADD
280	NOMURA HOLDINGS INC	$15.0M	238,708	+132,589	ADD
281	Vinva Investment Management Ltd	$14.9M	236,846	+18,943	ADD
282	LMR Partners LLP	$14.6M	232,801	+229,474	ADD
283	SHELTON CAPITAL MANAGEMENT	$14.6M	232,453	−107,641	TRIM
284	Dai-ichi Life Insurance Company, Ltd	$14.5M	231,497	−105,043	TRIM
285	Union Bancaire Privee, UBP SA	$14.4M	235,234	−13,263	TRIM
286	Tidal Investments LLC	$14.3M	228,269	+16,536	ADD
287	Ethic Inc.	$14.3M	227,217	−12,130	TRIM
288	Qsemble Capital Management, LP	$14.2M	225,867	+97,901	ADD
289	Aristotle Atlantic Partners, LLC	$14.0M	223,520	+12,480	ADD
290	Glenview Trust Co	$13.9M	221,332	+191,081	ADD
291	Sumitomo Mitsui DS Asset Management Company, Ltd	$13.9M	221,197	+10,924	ADD
292	Rakuten Investment Management, Inc.	$13.8M	220,066	+25,081	ADD
293	NEOS Investment Management LLC	$13.8M	220,546	−6,638	TRIM
294	NEW YORK LIFE INVESTMENT MANAGEMENT LLC	$13.8M	220,446	+5,780	ADD
295	BEESE FULMER INVESTMENT MANAGEMENT, INC.	$13.8M	219,741	+219,741	NEW
296	Walleye Trading LLC	$13.8M	219,385	+23,928	ADD
297	Vanguard Personalized Indexing Management, LLC	$13.5M	215,075	−650	TRIM
298	BAILARD, INC.	$13.4M	213,197	+11,041	ADD
299	Kestra Advisory Services, LLC	$13.3M	211,458	+5,321	ADD
300	HighTower Advisors, LLC	$13.2M	209,968	+37,473	ADD
301	Dana Investment Advisors, Inc.	$13.1M	209,345	+62,808	ADD
302	AE Wealth Management LLC	$13.0M	206,603	+28,720	ADD
303	Bank Julius Baer & Co. Ltd, Zurich	$12.9M	205,304	−264,018	TRIM
304	BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp	$12.8M	204,305	−58,624	TRIM
305	SALEM INVESTMENT COUNSELORS INC	$12.6M	201,532	+5,460	ADD
306	Elo Mutual Pension Insurance Co	$12.6M	201,021	+8,385	ADD
307	YOUSIF CAPITAL MANAGEMENT, LLC	$12.4M	198,030	−9,460	TRIM
308	Private Wealth Partners, LLC	$12.4M	197,086	+862	ADD
309	Intesa Sanpaolo S.p.A.	$12.4M	196,910	+56,412	ADD
310	MERCER GLOBAL ADVISORS INC /ADV	$12.3M	195,951	+92,975	ADD
311	TRUIST FINANCIAL CORP	$11.9M	189,953	−42,008	TRIM
312	NISSAY ASSET MANAGEMENT CORP /JAPAN	$11.9M	189,576	+2,724	ADD
313	Swiss Life Asset Management Ltd	$11.8M	187,736	+20,433	ADD
314	AIA Group Ltd	$11.7M	186,665	+28,690	ADD
315	Sone Capital Management, LLC	$11.7M	186,094	−10,939	TRIM
316	Corient Private Wealth LLC	$11.6M	186,603	−280,943	TRIM
317	CWM, LLC	$11.6M	184,539	+147,935	ADD
318	FIRST TRUST ADVISORS LP	$11.6M	184,386	+53,332	ADD
319	INTECH INVESTMENT MANAGEMENT LLC	$11.3M	180,430	+4,185	ADD
320	Pathstone Holdings, LLC	$11.3M	180,342	+4,035	ADD
321	GUGGENHEIM CAPITAL LLC	$11.2M	178,788	+24,697	ADD
322	FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A.	$11.1M	176,421	+86,386	ADD
323	SouthState Bank Corp	$11.0M	175,072	+6,736	ADD
324	Avanza Fonder AB	$10.9M	174,236	−8,743	TRIM
325	Baird Financial Group, Inc.	$10.8M	172,250	+172,250	NEW
326	Brevan Howard Capital Management LP	$10.8M	171,568	−29,188	TRIM
327	CADIAN CAPITAL MANAGEMENT, LP	$10.7M	170,000	+170,000	NEW
328	Andra AP-fonden	$10.7M	169,928	+100,406	ADD
329	OREGON PUBLIC EMPLOYEES RETIREMENT FUND	$10.7M	169,832	+100	ADD
330	Evelyn Partners Investment Management LLP	$10.6M	168,771	+26,883	ADD
331	Hardman Johnston Global Advisors LLC	$10.4M	166,024	−62,240	TRIM
332	QRG CAPITAL MANAGEMENT, INC.	$10.3M	163,765	+1,372	ADD
333	Waverly Advisors, LLC	$10.2M	162,989	+12,801	ADD
334	One Capital Management, LLC	$10.1M	161,545	+30,164	ADD
335	Blackstone Inc.	$10.1M	160,617	+138,416	ADD
336	LEVIN CAPITAL STRATEGIES, L.P.	$10.0M	158,940	+158,940	NEW
337	MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC	$9.9M	158,194	−1,398	TRIM
338	EDENTREE ASSET MANAGEMENT Ltd	$9.8M	156,600	+95,100	ADD
339	Pinnacle Financial Partners, Inc.	$9.8M	156,289	+26,107	ADD
340	COMMONWEALTH EQUITY SERVICES, LLC	$9.7M	154,252	−58,055	TRIM
341	CAPITAL INTERNATIONAL LTD /CA/	$9.6M	153,640	−85,225	TRIM
342	Lombard Odier Asset Management (Europe) Ltd	$9.5M	151,463	+8,184	ADD
343	MACQUARIE GROUP LTD	$9.5M	151,291	−79,665	TRIM
344	DIAMOND HILL CAPITAL MANAGEMENT INC	$9.4M	150,114	−100,100	TRIM
345	OP Asset Management Ltd	$9.4M	150,097	—	NO PRIOR
346	ARDSLEY ADVISORY PARTNERS LP	$9.4M	150,000	+150,000	NEW
347	Mill Capital Management, LLC	$9.4M	149,756	+42,453	ADD
348	Illinois Municipal Retirement Fund	$9.4M	149,182	−49,866	TRIM
349	Osmosis Investment Management UK Ltd	$9.3M	148,676	+53,203	ADD
350	Merit Financial Group, LLC	$9.3M	147,762	+11,745	ADD
351	CAPITOLIS LIQUID GLOBAL MARKETS LLC	$9.2M	147,333	−169,971	TRIM
352	NORTH POINT PORTFOLIO MANAGERS CORP/OH	$9.2M	147,327	+43,893	ADD
353	Vestmark Advisory Solutions, Inc.	$9.2M	146,593	+84,748	ADD
354	ASSETMARK, INC	$9.1M	145,679	+39,270	ADD
355	M&G Plc	$9.0M	143,246	+1,266	ADD
356	Atle Fund Management AB	$8.8M	40,432	−68,250	TRIM
357	OCCUDO QUANTITATIVE STRATEGIES LP	$8.8M	153,038	−24,028	TRIM
358	Rokos Capital Management LLP	$8.8M	140,163	+140,163	NEW
359	Capital International, Inc./CA/	$8.6M	136,850	−85,077	TRIM
360	Think Investments LP	$8.5M	136,000	+136,000	NEW
361	GDS Wealth Management	$8.5M	135,991	+6,640	ADD
362	First National Bank of Mount Dora, Trust Investment Services	$8.5M	134,736	—	NO PRIOR
363	Financial Perspectives, Inc	$8.4M	134,570	−597	TRIM
364	Moran Wealth Management, LLC	$8.3M	132,336	−49,998	TRIM
365	Lido Advisors, LLC	$8.1M	129,133	−11,149	TRIM
366	TWINBEECH CAPITAL LP	$7.8M	124,593	−33,258	TRIM
367	BANCO BILBAO VIZCAYA ARGENTARIA, S.A.	$7.8M	124,774	−10,376	TRIM
368	SUVRETTA CAPITAL MANAGEMENT, LLC	$7.8M	123,941	−229,620	TRIM
369	EXENCIAL WEALTH ADVISORS, LLC	$7.7M	123,124	+120,607	ADD
370	GLENMEDE TRUST CO NA	$7.6M	121,568	+13,572	ADD
371	NLB Skladi, upravljanje premozenja, d.o.o.	$7.5M	119,867	−5,627	TRIM
372	OpenArc Corporate Advisory, LLC	$7.5M	119,786	−20,317	TRIM
373	Clark Capital Management Group, Inc.	$7.4M	118,364	+40,633	ADD
374	Strategic Wealth Investment Group, LLC	$7.3M	116,606	+14,925	ADD
375	Avidity Partners Management LP	$7.2M	120,000	+5,500	ADD
376	Rafferty Asset Management, LLC	$7.2M	114,594	−45,012	TRIM
377	AGF MANAGEMENT LTD	$7.1M	112,483	−1,574,853	TRIM
378	FIRST NATIONAL TRUST CO	$7.1M	112,477	−3,693	TRIM
379	AVITY INVESTMENT MANAGEMENT INC.	$7.0M	111,381	−106,368	TRIM
380	Northside Capital Management, LLC	$7.0M	111,177	+111,177	NEW
381	Badgley Phelps Wealth Managers, LLC	$7.0M	111,135	+1,423	ADD
382	J. Safra Sarasin Holding AG	$6.8M	109,029	−161,436	TRIM
383	FLPUTNAM INVESTMENT MANAGEMENT CO	$6.8M	108,824	−226,404	TRIM
384	Tower Research Capital LLC (TRC)	$6.7M	107,293	+39,582	ADD
385	Investment Management Corp of Ontario	$6.7M	106,023	−27,518	TRIM
386	Hennion & Walsh Asset Management, Inc.	$6.6M	105,906	+2,317	ADD
387	SPIREPOINT PRIVATE CLIENT, LLC	$6.6M	105,697	+11,613	ADD
388	Envestnet Portfolio Solutions, Inc.	$6.6M	105,573	+8,418	ADD
389	Synergy Asset Management, LLC	$6.6M	105,453	−142,657	TRIM
390	BRAUN STACEY ASSOCIATES INC	$6.6M	105,341	−151,752	TRIM
391	Robeco Institutional Asset Management B.V.	$6.6M	105,313	−2,887,564	TRIM
392	First Nebraska Trust Co	$6.6M	105,091	—	NO PRIOR
393	LONE PINE CAPITAL LLC	$6.6M	104,655	−97,048	TRIM
394	M&T BANK CORP	$6.4M	101,879	−1,234	TRIM
395	OPPENHEIMER ASSET MANAGEMENT INC.	$6.4M	101,714	−85,172	TRIM
396	AXQ CAPITAL, LP	$6.3M	100,056	+87,509	ADD
397	Leonteq Securities AG	$6.2M	99,255	+80,333	ADD
398	Wealthfront Advisers LLC	$6.2M	99,104	−27,180	TRIM
399	Saranac Partners Ltd	$6.2M	95,541	+18,895	ADD
400	Crossmark Global Holdings, Inc.	$6.2M	98,091	—	NO PRIOR
401	Caitong International Asset Management Co., Ltd	$6.1M	97,766	+93,752	ADD
402	LGT Fund Management Co Ltd.	$6.0M	95,955	+36,611	ADD
403	Verition Fund Management LLC	$6.0M	95,375	+47,438	ADD
404	Sanctuary Advisors, LLC	$5.9M	93,395	−347	TRIM
405	CAISSE DES DEPOTS ET CONSIGNATIONS	$5.9M	93,325	+5,631	ADD
406	Empowered Funds, LLC	$5.8M	91,958	+91,958	NEW
407	Vident Advisory, LLC	$5.8M	91,925	+32,245	ADD
408	Norinchukin Bank, The	$5.7M	90,429	+304	ADD
409	MIZUHO SECURITIES USA LLC	$5.6M	89,655	−18,287	TRIM
410	Foresight Group Ltd Liability Partnership	$5.6M	89,343	+89,343	NEW
411	DODGE & COX	$5.6M	88,885	0	NO CHANGE
412	Fortis Capital Management LLC	$5.4M	86,695	+43,898	ADD
413	LOCKHEED MARTIN INVESTMENT MANAGEMENT CO	$5.4M	85,920	+31,370	ADD
414	Edgestream Partners, L.P.	$5.4M	85,752	+66,293	ADD
415	Canada Post Corp Registered Pension Plan	$5.4M	85,329	+27,526	ADD
416	FACTORY MUTUAL INSURANCE CO	$5.3M	84,600	+13,500	ADD
417	HARTFORD INVESTMENT MANAGEMENT CO	$5.3M	84,533	−1,335	TRIM
418	BTC Capital Management, Inc.	$5.3M	84,238	+30,778	ADD
419	O'Brien Greene & Co. Inc	$5.2M	83,406	+83,406	NEW
420	Equitable Holdings, Inc.	$5.2M	57,465	+34,882	ADD
421	OSBORNE PARTNERS CAPITAL MANAGEMENT, LLC	$5.2M	82,511	+82,511	NEW
422	WINTON GROUP Ltd	$5.2M	82,256	−69,197	TRIM
423	Northwest & Ethical Investments L.P.	$5.1M	81,182	−3,970	TRIM
424	Alberta Investment Management Corp	$5.0M	80,400	+1,640	ADD
425	ELEVATION POINT WEALTH PARTNERS, LLC	$5.0M	80,011	+64,908	ADD
426	OMERS ADMINISTRATION Corp	$5.0M	79,936	+5,326	ADD
427	CAPSTONE INVESTMENT ADVISORS, LLC	$4.9M	78,247	+67,771	ADD
428	ALERUS FINANCIAL NA	$4.8M	77,034	−7,240	TRIM
429	Bridgewater Associates, LP	$4.8M	76,992	−16,753	TRIM
430	CIBC WORLD MARKET INC.	$4.8M	76,709	+51,477	ADD
431	BRASADA CAPITAL MANAGEMENT, LP	$4.8M	76,308	−7,953	TRIM
432	BROWN, LISLE/CUMMINGS, INC.	$4.8M	75,763	+1,320	ADD
433	BOOTHBAY FUND MANAGEMENT, LLC	$4.7M	75,212	+38,768	ADD
434	Compagnie Lombard Odier SCmA	$4.6M	73,918	+66,703	ADD
435	Quantbot Technologies LP	$4.6M	73,709	−40,866	TRIM
436	Maryland State Retirement & Pension System	$4.6M	73,621	0	NO CHANGE
437	Pictet North America Advisors SA	$4.6M	72,703	+13,729	ADD
438	COMMERCE BANK	$4.5M	71,268	+3,366	ADD
439	&PARTNERS	$4.3M	69,266	−15,680	TRIM
440	EXCHANGE TRADED CONCEPTS, LLC	$4.2M	67,401	+2,113	ADD
441	Providence Capital Advisors, LLC	$4.2M	67,100	−500	TRIM
442	GROUP ONE TRADING LLC	$4.2M	66,446	+44,402	ADD
443	Banque Cantonale Vaudoise	$4.2M	66,323	+25,106	ADD
444	Ally Financial Inc.	$4.1M	66,000	+55,000	ADD
445	UMB Bank, n.a.	$4.1M	65,934	−2,824	TRIM
446	NewEdge Advisors, LLC	$4.1M	65,461	+65,461	NEW
447	Wealthspire Retirement, LLC	$4.1M	65,215	+683	ADD
448	Spartan Wealth Advisory Services LLC	$4.1M	65,057	—	NO PRIOR
449	RBA Wealth Management, LLC	$4.0M	63,737	+1,368	ADD
450	Larson Financial Group LLC	$4.0M	63,618	+1,902	ADD
451	DAVIDSON KEMPNER CAPITAL MANAGEMENT LP	$4.0M	63,250	+63,250	NEW
452	LOUISBOURG INVESTMENTS INC.	$4.0M	84,087	+76,220	ADD
453	Meiji Yasuda Asset Management Co Ltd.	$4.0M	63,152	−3,129	TRIM
454	NICOLET BANKSHARES INC	$4.0M	63,057	+63,057	NEW
455	Atria Investments, Inc	$3.9M	62,651	−12,009	TRIM
456	KESTRA PRIVATE WEALTH SERVICES, LLC	$3.9M	62,536	+6,569	ADD
457	KENNEDY CAPITAL MANAGEMENT LLC	$3.9M	62,306	+24,863	ADD
458	Generali Asset Management SPA SGR	$3.9M	61,449	−33,203	TRIM
459	AG2R LA MONDIALE GESTION D'ACTIFS	$3.8M	61,025	+1,481	ADD
460	DNCA FINANCE	$3.8M	61,000	+61,000	NEW
461	Cornerstone Wealth Group, LLC	$3.8M	64,233	+59,722	ADD
462	MUFG Securities EMEA plc	$3.8M	60,785	−278,642	TRIM
463	Steward Partners Investment Advisory, LLC	$3.8M	60,573	+7,066	ADD
464	Granite Investment Partners, LLC	$3.8M	60,473	+1,003	ADD
465	OXFORD ASSET MANAGEMENT LLP	$3.7M	59,288	+54,399	ADD
466	Arvest Bank Trust Division	$3.7M	58,889	−719	TRIM
467	Cyndeo Wealth Partners, LLC	$3.7M	58,392	+13,004	ADD
468	Allworth Financial LP	$3.7M	58,167	+11,989	ADD
469	SCOTIA CAPITAL INC.	$3.6M	57,982	+5,508	ADD
470	Davidson Capital Management Inc.	$3.6M	57,616	+57,486	ADD
471	BDF-GESTION	$3.6M	57,069	+19,023	ADD
472	HB Wealth Management, LLC	$3.6M	56,687	+6,850	ADD
473	NewEdge Wealth, LLC	$3.5M	56,101	−16,515	TRIM
474	Quintet Private Bank (Europe) S.A.	$3.5M	56,025	+24,731	ADD
475	DELTEC ASSET MANAGEMENT LLC	$3.5M	55,400	+13,100	ADD
476	Empower Advisory Group, LLC	$3.5M	55,203	−39,626	TRIM
477	Siemens Fonds Invest GmbH	$3.4M	54,971	+2,935	ADD
478	CHANNEL WEALTH LLC	$3.4M	54,124	+19,502	ADD
479	Costello Asset Management, INC	$3.4M	54,018	−3,955	TRIM
480	Castlefield Investment Partners LLP	$3.4M	53,861	+53,671	ADD
481	Brooklyn Investment Group	$3.4M	53,712	+10,061	ADD
482	TOKIO MARINE ASSET MANAGEMENT CO LTD	$3.3M	53,170	+2,864	ADD
483	Fifth Third Wealth Advisors LLC	$3.3M	53,099	+2,712	ADD
484	Transamerica Financial Advisors, LLC	$3.3M	52,849	−2,102	TRIM
485	Torrey Growth & Income Advisors	$3.3M	52,698	+3,800	ADD
486	GREAT VALLEY ADVISOR GROUP, INC.	$3.3M	52,491	+7,573	ADD
487	Legacy Wealth Management, LLC / MS	$3.3M	52,032	+2,232	ADD
488	Kintegral Advisory, LLC	$3.2M	51,777	−2,296	TRIM
489	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	$3.2M	51,609	+70	ADD
490	KING LUTHER CAPITAL MANAGEMENT CORP	$3.2M	51,231	−1,390	TRIM
491	Crystal Rock Capital Management	$3.2M	50,645	−8,375	TRIM
492	Laird Norton Wetherby Trust Company, LLC	$3.2M	50,500	−4,592	TRIM
493	HIGHLAND CAPITAL MANAGEMENT, LLC	$3.1M	50,000	−1,000	TRIM
494	ECOFI INVESTISSEMENTS SA	$3.1M	50,000	−43,900	TRIM
495	Security National Bank	$3.1M	49,028	+353	ADD
496	Meiji Yasuda America Inc	$3.1M	48,707	−669	TRIM
497	Coastal Bridge Advisors, LLC	$3.0M	48,602	+38,015	ADD
498	Empirical Finance, LLC	$3.0M	48,397	−52	TRIM
499	Exome Asset Management LLC	$3.0M	48,347	+48,347	NEW
500	Trifecta Capital Advisors, LLC	$3.0M	48,316	−795	TRIM

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

Congress ↔ notable managers · BSX

who in Congress disclosed purchases or sales beside which notable managers added or trimmed

Congress · last 90 days

Buyers: 2 Alan Armstrong R–OK, Gilbert Ray Cisneros, Jr. D–CA-31 $2K–$30K
Sellers: 2 Kevin Hern R–OK-1, John Boozman R–AR $119K–$310K

filed 2026-07-03 → 2026-10-01 · totals are statutory ranges

Notable managers · quarter ended 2026-03-31

Adding: 1 Gotham Asset Management $30.3M held
Trimming: 5 Tudor Investment Corp, Lone Pine Capital, Bridgewater Associates, Caxton Associates, Viking Global Investors $51.4M held

NEW + ADD vs TRIM + EXIT, by shares · $ = reported value now, not the change · BOSTON SCIENTIFIC CORP

Merged timeline of congressional filings and notable-manager moves on BSX
Date	Who	Change	Size
2026-09-25	Kevin Hern Congress	SELL	$50K–$100K
2026-09-25	Kevin Hern Congress	SELL	$50K–$100K
2026-09-25	Kevin Hern Congress	SELL	$1K–$15K
2026-09-25	Kevin Hern Congress	SELL	$1K–$15K
2026-09-25	Kevin Hern Congress	SELL	$1K–$15K
2026-09-25	Kevin Hern Congress	SELL	$15K–$50K
2026-09-10	Gilbert Ray Cisneros, Jr. Congress	BUY	$1K–$15K
2026-07-21	Alan Armstrong Congress	BUY	$1K–$15K
2026-07-13	John Boozman Congress	SELL	$1K–$15K
2026-05-15	Gotham Asset Management 13F	ADD	+323,810 sh
2026-05-15	Tudor Investment Corp 13F	TRIM	−100,286 sh
2026-05-15	Lone Pine Capital 13F	TRIM	−97,048 sh
2026-05-15	Bridgewater Associates 13F	TRIM	−16,753 sh
2026-05-15	Viking Global Investors 13F	EXIT	−2,509,808 sh
2026-05-14	Caxton Associates 13F	TRIM	−11,307 sh

15 newest rows · every row dates by its filing date: a disclosure's, or the 13F's for the quarter · a 13F row is a quarter-end snapshot, not a trade

19 members of Congress disclosed BSX — the congressional view ↗

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).