Boston Scientific Corp
BSX- Exchange
- NYSE
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0000885725
In the last 90 days, Boston Scientific Corp insiders filed 5 open-market purchases and 0 sales; 1,487 institutions reported holding it in 13F filings for Q2 2026, worth $57.3B in total; Maverick Capital is the only superinvestor holding it.
13F holders, Q1 2026
Institutional positions in Boston Scientific Corp as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 1,683
- −82 vs. Q4 2025
- Shares held
- 1.34B
- +142.6M (+11.9%) vs. Q4 2025
- Total value
- $84.2B
- −$30.0B (−26.2%) vs. Q4 2025
- New holders
- 196
- 678 more added
- Sold out
- 278
- 638 more reduced
28 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting BSX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1,487 | $57.3B |
| Q1 2026 | 1,683 | $84.2B |
| Q4 2025 | 1,793 | $130.0B |
| Q3 2025 | 1,714 | $131.1B |
| Q2 2025 | 1,693 | $145.4B |
| Q1 2025 | 1,648 | $135.2B |
| Q4 2024 | 1,519 | $119.8B |
| Q3 2024 | 1,402 | $111.0B |
| Q2 2024 | 1,324 | $102.2B |
| Q1 2024 | 1,226 | $90.9B |
| Q4 2023 | 1,151 | $77.3B |
| Q3 2023 | 1,060 | $70.6B |
| Q2 2023 | 1,069 | $71.6B |
| Q1 2023 | 1,000 | $65.7B |
| Q4 2022 | 930 | $60.5B |
| Q3 2022 | 866 | $50.9B |
| Q2 2022 | 882 | $48.6B |
| Q1 2022 | 909 | $57.0B |
| Q4 2021 | 892 | $54.8B |
| Q3 2021 | 884 | $56.6B |
| Q2 2021 | 873 | $55.3B |
| Q1 2021 | 836 | $49.9B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Boston Scientific Corp; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Healthcare of Ontario Pension Plan Trust Fund | 789,092 | $49.5M | 0.08% | +210,489+36.4% | Added |
| Prosight Management, LP | 795,547 | $49.9M | 8.19% | +585,547+278.8% | Added |
| Vestal Point Capital, LP | 800,000 | $50.2M | 1.40% | +800,000 | New |
| Banque Transatlantique SA | 798,907 | $50.2M | 1.20% | −412,424−34.0% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 807,369 | $50.7M | 0.12% | −11,547−1.4% | Reduced |
| Calamos Advisors LLC | 817,686 | $51.3M | 0.20% | −53,971−6.2% | Reduced |
| Panagora Asset Management Inc | 822,114 | $51.6M | 0.19% | −667,070−44.8% | Reduced |
| State of Wisconsin Investment Board | 833,955 | $52.3M | 0.12% | +66,101+8.6% | Added |
| Danske Bank A/S | 834,747 | $52.4M | 0.13% | −30,315−3.5% | Reduced |
| Walleye Capital LLC | 835,952 | $52.5M | 0.32% | −1,205,462−59.1% | Reduced |
| LPL Financial LLC | 848,038 | $53.2M | 0.01% | −857,789−50.3% | Reduced |
| Northwestern Mutual Wealth Management Co | 854,345 | $53.6M | 0.03% | +118,493+16.1% | Added |
| Fisher Funds Management LTD | 860,964 | $54.0M | 1.59% | +490,387+132.3% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 893,749 | $56.1M | 0.29% | +102,573+13.0% | Added |
| Abn Amro Investment Solutions | 894,310 | $56.1M | 0.73% | +207,303+30.2% | Added |
| Jennison Associates LLC | 897,775 | $56.3M | 0.04% | −4,570,520−83.6% | Reduced |
| Harvest Portfolios Group Inc. | 916,981 | $57.5M | 0.95% | +319,640+53.5% | Added |
| Banque Pictet & Cie SA | 921,164 | $57.8M | 0.67% | +650,293+240.1% | Added |
| PFA Pension, Forsikringsaktieselskab | 925,491 | $58.1M | 0.17% | −888−0.1% | Reduced |
| SG Americas Securities, LLC | 931,155 | $58.4M | 0.06% | +544,637+140.9% | Added |
| RE Advisers Corp | 942,062 | $59.1M | 1.59% | +395,000+72.2% | Added |
| AMF Pensionsforsakring AB | 951,982 | $59.7M | 0.40% | −968−0.1% | Reduced |
| BSN Capital Partners Ltd | 629,000 | $60.1M | 1.53% | +129,000+25.8% | Added |
| Longaeva Partners L.P. | 957,306 | $60.1M | 2.89% | +957,306 | New |
| Mackenzie Financial Corp | 959,867 | $60.2M | 0.07% | −1,107,981−53.6% | Reduced |
| Danica Pension, Livsforsikringsaktieselskab | 970,286 | $60.9M | 1.14% | −1,024,443−51.4% | Reduced |
| Federation des caisses Desjardins du Quebec | 998,249 | $62.6M | 0.23% | +337,704+51.1% | Added |
| Nomura Asset Management Co Ltd | 1,015,421 | $63.7M | 0.16% | +108,521+12.0% | Added |
| SEI Investments Co | 1,021,347 | $64.1M | 0.06% | −1,185,973−53.7% | Reduced |
| Susquehanna International Group, LLP | 1,033,109 | $64.8M | 0.08% | +477,139+85.8% | Added |
| Federated Hermes, Inc. | 1,040,857 | $65.3M | 0.11% | −636,029−37.9% | Reduced |
| HRT Financial LP | 1,051,996 | $66.0M | 0.16% | +720,340+217.2% | Added |
| Voloridge Investment Management, LLC | 1,078,109 | $67.7M | 0.27% | −725,804−40.2% | Reduced |
| Allspring Global Investments Holdings, LLC | 1,093,483 | $67.8M | 0.11% | −1,079,916−49.7% | Reduced |
| Great West Life Assurance Co | 1,085,764 | $68.3M | 0.12% | −73,332−6.3% | Reduced |
| Schonfeld Strategic Advisors LLC | 1,105,515 | $69.4M | 0.56% | +506,234+84.5% | Added |
| Korea Investment CORP | 1,134,530 | $71.2M | 0.15% | −284,721−20.1% | Reduced |
| The PNC Financial Services Group, Inc. | 1,159,624 | $72.8M | 0.04% | −28,392−2.4% | Reduced |
| Storebrand Asset Management AS | 1,196,979 | $75.1M | 0.22% | −224,233−15.8% | Reduced |
| New York State Teachers Retirement System | 1,205,249 | $75.6M | 0.15% | −3,002−0.2% | Reduced |
| Swedbank AB | 1,259,158 | $79.0M | 0.08% | −2,170,686−63.3% | Reduced |
| National Bank of Canada | 1,260,894 | $79.1M | 0.08% | −15,341−1.2% | Reduced |
| Candriam Luxembourg S.C.A. | 1,261,461 | $79.2M | 0.41% | +131,623+11.6% | Added |
| Cerity Partners LLC | 1,263,755 | $79.3M | 0.11% | −1,769−0.1% | Reduced |
| State Board of Administration of Florida Retirement System | 1,288,698 | $80.9M | 0.15% | 00.0% | Unchanged |
| Nordea Investment Management AB | 1,330,037 | $82.1M | 0.08% | +1,182,755+803.1% | Added |
| Bank of Montreal | 1,324,527 | $83.1M | 0.04% | −715,839−35.1% | Reduced |
| Menora Mivtachim Holdings Ltd. | 1,333,500 | $83.7M | 0.40% | +1,333,500 | New |
| Eurizon Capital SGR S.p.A. | 1,348,483 | $84.8M | 0.26% | +50,550+3.9% | Added |
| Balyasny Asset Management LLC | 1,356,133 | $85.1M | 0.17% | −1,125,616−45.4% | Reduced |
| Impax Asset Management Group plc | 1,359,572 | $85.3M | 0.59% | −364,355−21.1% | Reduced |
| Groupama Asset Managment | 1,375,261 | $86.3M | 1.26% | +8,356+0.6% | Added |
| Huntington National Bank | 1,405,328 | $88.2M | 0.49% | −22,806−1.6% | Reduced |
| Fred Alger Management, LLC | 1,454,619 | $91.3M | 0.40% | +357,944+32.6% | Added |
| Bellevue Group AG | 1,466,894 | $92.0M | 2.19% | −92,712−5.9% | Reduced |
| Caisse de Depot Et Placement du Quebec | 1,485,451 | $93.2M | 0.15% | +39,359+2.7% | Added |
| Aviva PLC | 1,488,608 | $93.4M | 0.16% | +2,896+0.2% | Added |
| Acadian Asset Management LLC | 1,495,140 | $93.8M | 0.13% | +413,867+38.3% | Added |
| TCW Group Inc | 1,536,210 | $96.4M | 0.73% | +106,468+7.4% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 1,541,012 | $96.7M | 0.17% | +159,346+11.5% | Added |
| Prudential Financial Inc | 1,548,562 | $97.2M | 0.12% | −35,873−2.3% | Reduced |
| Phoenix Holdings Ltd. | 1,550,372 | $97.3M | 0.92% | +1,485,404+2,286.4% | Added |
| Veritas Investment Partners (UK) Ltd. | 1,558,014 | $97.7M | 2.50% | +1,558,014 | New |
| Citigroup Inc | 1,576,640 | $98.9M | 0.06% | +220,141+16.2% | Added |
| Squarepoint Ops LLC | 1,589,914 | $99.8M | 0.21% | −1,445,374−47.6% | Reduced |
| Congress Asset Management Co | 1,629,485 | $102.3M | 0.73% | −20,473−1.2% | Reduced |
| Capital Fund Management S.A. | 1,665,947 | $104.5M | 0.94% | +513,899+44.6% | Added |
| Alphinity Investment Management Pty Ltd | 1,673,285 | $105.0M | 1.85% | −979,237−36.9% | Reduced |
| Principal Financial Group Inc | 1,686,453 | $105.8M | 0.06% | +14,795+0.9% | Added |
| Envestnet Asset Management Inc | 1,686,819 | $105.8M | 0.03% | −920,221−35.3% | Reduced |
| Jones Financial Companies LLLP | 1,531,937 | $105.9M | 0.05% | +1,487,392+3,339.1% | Added |
| Public Employees Retirement Association of Colorado | 1,701,806 | $106.8M | 0.42% | +618,254+57.1% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1,791,149 | $112.4M | 0.24% | +60,784+3.5% | Added |
| TD Asset Management Inc | 1,799,116 | $112.9M | 0.09% | −66,285−3.6% | Reduced |
| New York State Common Retirement Fund | 1,812,953 | $113.8M | 0.16% | +4,000+0.2% | Added |
| Natixis Advisors, L.P. | 1,868,044 | $117.2M | 0.16% | −340,596−15.4% | Reduced |
| Great Lakes Advisors, LLC | 1,878,772 | $117.9M | 0.98% | +101,996+5.7% | Added |
| DekaBank Deutsche Girozentrale | 1,844,793 | $118.0M | 0.19% | 00.0% | Unchanged |
| CIBC Bancorp USA Inc. | 1,941,425 | $121.9M | 0.16% | +1,941,425 | New |
| Stifel Financial Corp | 1,978,011 | $124.1M | 0.11% | −136,486−6.5% | Reduced |
| Credit Agricole S A | 2,021,577 | $126.9M | 0.41% | −152,420−7.0% | Reduced |
| SEB Asset Management AB | 2,076,524 | $130.3M | 0.56% | +2,076,524 | New |
| Public Sector Pension Investment Board | 2,077,623 | $130.4M | 0.41% | +661,315+46.7% | Added |
| Employees Provident Fund Board | 2,134,591 | $133.9M | 1.01% | 00.0% | Unchanged |
| Mirova US LLC | 2,203,401 | $138.3M | 1.57% | +833,372+60.8% | Added |
| Milford Funds Ltd | 2,210,221 | $138.7M | 2.91% | +1,394,942+171.1% | Added |
| Ilex Capital Partners (UK) LLP | 2,234,180 | $140.2M | 3.45% | +633,379+39.6% | Added |
| California Public Employees Retirement System | 2,261,265 | $141.9M | 0.09% | −750,748−24.9% | Reduced |
| Worldquant Millennium Advisors LLC | 2,274,140 | $142.7M | 0.55% | −1,112,856−32.9% | Reduced |
| Clearbridge Investments, LLC | 2,279,418 | $143.0M | 0.12% | +1,546,181+210.9% | Added |
| California State Teachers Retirement System | 2,299,954 | $144.3M | 0.15% | −57,751−2.4% | Reduced |
| Bank of Nova Scotia | 2,303,011 | $144.5M | 0.25% | +308,930+15.5% | Added |
| Russell Investments Group, Ltd. | 2,318,420 | $145.5M | 0.16% | +372,845+19.2% | Added |
| OrbiMed Advisors LLC | 2,382,100 | $149.5M | 3.40% | −37,200−1.5% | Reduced |
| Allianz Asset Management GmbH | 2,393,824 | $150.2M | 0.17% | +394,232+19.7% | Added |
| Temasek Holdings (Private) Ltd | 2,399,426 | $150.6M | 0.51% | +317,800+15.3% | Added |
| KBC Group NV | 2,420,506 | $151.9M | 0.38% | −623,879−20.5% | Reduced |
| Alliancebernstein L.P. | 1,625,785 | $155.0M | 0.05% | −1,174,944−42.0% | Reduced |
| Mariner, LLC | 2,484,960 | $155.9M | 0.18% | +2,053,754+476.3% | Added |
| Vanguard Asset Management, Ltd | 2,567,095 | $161.1M | 0.14% | +2,567,095 | New |