Who holds BSXticker 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 ↗

1,354

holders13F filers reporting this class for the quarter ended 2026-03-31; the 500 largest are listed

$74.5B

combined valuesum of the reported values across every holder; NULL values are excluded, never zero-filled

692

addsholders whose share count rose or who opened the position (new + add), by shares

286

exitsholders absent this quarter after holding last quarter — inferred from absence, not a sale record

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

Quarter ended 2026-03-31Newest 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 Gilbert Ray Cisneros, Jr. D–CA-31, Alan Armstrong R–OK $3K–$45K
Sellers: 2 Gilbert Ray Cisneros, Jr. D–CA-31, John Boozman R–AR $2K–$30K

filed 2026-06-16 → 2026-09-14 · 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
2026-09-10	Gilbert Ray Cisneros, Jr. Congress	Purchase	$1K–$15K
2026-07-21	Alan Armstrong Congress	Purchase	$1K–$15K
2026-07-13	John Boozman Congress	Sale	$1K–$15K
2026-07-02	Gilbert Ray Cisneros, Jr. Congress	Sale	$1K–$15K
2026-07-02	Gilbert Ray Cisneros, Jr. Congress	Purchase	$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

11 newest rows · Congress rows date by filing, 13F rows by quarter end · a 13F row is a quarter-end snapshot, not a trade

19 members of Congress disclosed BSX — the congressional view ↗