Review the latest institutional ownership data for BSX based on recent 13F filings. Holdings Channel tracks 1702 institutional holders of BSX across the most recent two holding periods in our 13F database.
The table below shows the top 50 institutional holders of BSX by reported position size, including share amounts, position values, and the filing period for each holder. Holder names link to each institution’s 13F portfolio page.
BSX institutional holders summary
- Security: BSX
- Institutional holders tracked: 1702
- Largest reported holder shown: Vanguard Group Inc.
- Table includes: holder name, share amount, position value, and filing period
- Source: recent institutional 13F filings
| Holder | Amount | Position Size ($ in 1000's) | As of |
|---|---|---|---|
 Vanguard Group Inc. | 139,685,997 | $13,319,060 | 12/31/2025 |
| BSX | 139,685,997 | $13,319,060 | 12/31/2025 |
| BlackRock Inc. | 131,822,037 | $8,271,833 | 03/31/2026 |
| BSX | 131,822,037 | $8,271,833 | 03/31/2026 |
| Vanguard Capital Management LLC | 96,411,568 | $6,049,826 | 03/31/2026 |
| BSX | 96,411,568 | $6,049,826 | 03/31/2026 |
| FMR LLC | 74,226,395 | $4,657,706 | 03/31/2026 |
| BSX | 74,226,395 | $4,657,706 | 03/31/2026 |
| State Street Corp | 67,986,847 | $4,266,175 | 03/31/2026 |
| BSX | 67,986,847 | $4,266,175 | 03/31/2026 |
 JPMorgan Chase & Co. | $2,088,959 | 03/31/2026 | |
| BSX | 33,350,157 | $2,098,726 | 03/31/2026 |
| Put | 628,500 | $39,552 | 03/31/2026 |
| Call | 473,300 | $29,785 | 03/31/2026 |
| Geode Capital Management LLC | 33,285,757 | $2,079,210 | 03/31/2026 |
| BSX | 33,285,757 | $2,079,210 | 03/31/2026 |
| Primecap Management Co. CA | 32,529,774 | $2,041,243 | 03/31/2026 |
| BSX | 32,529,774 | $2,041,243 | 03/31/2026 |
| Vanguard Portfolio Management LLC | 29,796,211 | $1,869,712 | 03/31/2026 |
| BSX | 29,796,211 | $1,869,712 | 03/31/2026 |
| D. E. Shaw & Co. Inc. | $1,533,130 | 03/31/2026 | |
| BSX | 24,312,352 | $1,525,600 | 03/31/2026 |
| Call | 120,000 | $7,530 | 03/31/2026 |
| Bank of America Corp DE | 22,756,646 | $1,427,980 | 03/31/2026 |
| BSX | 22,756,646 | $1,427,980 | 03/31/2026 |
| Morgan Stanley | 22,266,664 | $1,397,233 | 03/31/2026 |
| BSX | 22,266,664 | $1,397,233 | 03/31/2026 |
| Goldman Sachs Group Inc. | $1,215,255 | 03/31/2026 | |
| BSX | 18,891,624 | $1,185,449 | 03/31/2026 |
| Call | 475,000 | $29,806 | 03/31/2026 |
| Wellington Management Group LLP | 18,833,406 | $1,181,796 | 03/31/2026 |
| BSX | 18,833,406 | $1,181,796 | 03/31/2026 |
| Bollard Group LLC | 18,532,173 | $1,162,894 | 03/31/2026 |
| BSX | 18,532,173 | $1,162,894 | 03/31/2026 |
| Janus Henderson Group PLC | 16,497,366 | $1,035,202 | 03/31/2026 |
| BSX | 16,497,366 | $1,035,202 | 03/31/2026 |
| Capital World Investors | 15,309,738 | $960,698 | 03/31/2026 |
| BSX | 15,309,738 | $960,698 | 03/31/2026 |
| UBS Group AG | $959,578 | 03/31/2026 | |
| BSX | 14,824,662 | $930,248 | 03/31/2026 |
| Call | 727,110 | $45,626 | 03/31/2026 |
| Put | 259,700 | $16,296 | 03/31/2026 |
| Franklin Resources Inc. | $922,864 | 03/31/2026 | |
| BSX | 14,498,741 | $909,796 | 03/31/2026 |
| Call | 208,261 | $13,068 | 03/31/2026 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank Frankfurt am Main | $888,487 | 03/31/2026 | |
| BSX | 13,229,644 | $830,160 | 03/31/2026 |
| Call | 937,000 | $58,327 | 03/31/2026 |
| Amundi | 14,122,913 | $886,213 | 03/31/2026 |
| BSX | 14,122,913 | $886,213 | 03/31/2026 |
| Arrowstreet Capital Limited Partnership | 13,891,668 | $871,702 | 03/31/2026 |
| BSX | 13,891,668 | $871,702 | 03/31/2026 |
| UBS Asset Management Americas Inc. | 13,513,771 | $847,989 | 03/31/2026 |
| BSX | 13,513,771 | $847,989 | 03/31/2026 |
| Northern Trust Corp | 13,373,881 | $839,211 | 03/31/2026 |
| BSX | 13,373,881 | $839,211 | 03/31/2026 |
| Nuveen LLC | 11,734,314 | $736,328 | 03/31/2026 |
| BSX | 11,734,314 | $736,328 | 03/31/2026 |
| Massachusetts Financial Services Co. MA | 10,996,572 | $716,916 | 03/31/2026 |
| BSX | 10,996,572 | $716,916 | 03/31/2026 |
| Legal & General Group Plc | 10,600,766 | $665,198 | 03/31/2026 |
| BSX | 10,600,766 | $665,198 | 03/31/2026 |
| Assenagon Asset Management S.A. | 10,057,936 | $631,135 | 03/31/2026 |
| BSX | 10,057,936 | $631,135 | 03/31/2026 |
| Bank of New York Mellon Corp | 9,543,875 | $598,878 | 03/31/2026 |
| BSX | 9,543,875 | $598,878 | 03/31/2026 |
| Two Sigma Investments LP | $590,241 | 03/31/2026 | |
| BSX | 9,411,231 | $590,555 | 03/31/2026 |
| Put | 5,000 | $314 | 03/31/2026 |
| Charles Schwab Investment Management Inc. | 9,170,180 | $575,429 | 03/31/2026 |
| BSX | 9,170,180 | $575,429 | 03/31/2026 |
| Invesco Ltd. | 9,051,941 | $568,009 | 03/31/2026 |
| BSX | 9,051,941 | $568,009 | 03/31/2026 |
| Vanguard Fiduciary Trust Co. | 8,382,185 | $525,982 | 03/31/2026 |
| BSX | 8,382,185 | $525,982 | 03/31/2026 |
| Canada Pension Plan Investment Board | 8,035,947 | $504,256 | 03/31/2026 |
| BSX | 8,035,947 | $504,256 | 03/31/2026 |
| Parnassus Investments CA | 8,003,820 | $502,240 | 03/31/2026 |
| BSX | 8,003,820 | $502,240 | 03/31/2026 |
| Vontobel Holding Ltd. | 7,978,214 | $500,633 | 03/31/2026 |
| BSX | 7,978,214 | $500,633 | 03/31/2026 |
| Price T Rowe Associates Inc. MD | 7,873,368 | $494,054 | 03/31/2026 |
| BSX | 7,873,368 | $494,054 | 03/31/2026 |
| Edgewood Management LLC | 7,629,399 | $478,745 | 03/31/2026 |
| BSX | 7,629,399 | $478,745 | 03/31/2026 |
| Farallon Capital Management LLC | 7,470,684 | $468,785 | 03/31/2026 |
| BSX | 7,470,684 | $468,785 | 03/31/2026 |
| Ninety One UK Ltd | 7,308,540 | $458,611 | 03/31/2026 |
| BSX | 7,308,540 | $458,611 | 03/31/2026 |
| 1832 Asset Management L.P. | 7,252,746 | $455,110 | 03/31/2026 |
| BSX | 7,252,746 | $455,110 | 03/31/2026 |
| Schroder Investment Management Group | 7,252,007 | $455,063 | 03/31/2026 |
| BSX | 7,252,007 | $455,063 | 03/31/2026 |
| Capital Research Global Investors | 7,080,887 | $444,327 | 03/31/2026 |
| BSX | 7,080,887 | $444,327 | 03/31/2026 |
| Neuberger Berman Group LLC | 7,072,894 | $443,824 | 03/31/2026 |
| BSX | 7,072,894 | $443,824 | 03/31/2026 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 6,966,229 | $437,308 | 03/31/2026 |
| BSX | 6,966,229 | $437,308 | 03/31/2026 |
| Deutsche Bank AG | 6,653,275 | $417,493 | 03/31/2026 |
| BSX | 6,653,275 | $417,493 | 03/31/2026 |
| Royal Bank of Canada | 6,273,263 | $393,647 | 03/31/2026 |
| BSX | 6,273,263 | $393,647 | 03/31/2026 |
| Dimensional Fund Advisors LP | 6,097,777 | $382,668 | 03/31/2026 |
| BSX | 6,097,777 | $382,668 | 03/31/2026 |
| Point72 Asset Management L.P. | $361,817 | 03/31/2026 | |
| BSX | 3,687,315 | $231,379 | 03/31/2026 |
| Call | 2,110,900 | $132,459 | 03/31/2026 |
| Put | 32,200 | $2,021 | 03/31/2026 |
| Qube Research & Technologies Ltd | $351,675 | 03/31/2026 | |
| BSX | 5,569,880 | $349,510 | 03/31/2026 |
| Call | 66,100 | $4,148 | 03/31/2026 |
| Put | 31,600 | $1,983 | 03/31/2026 |
