BOSTON SCIENTIFIC CORP hedge fund holdings
BSXNYSE$42.60-0.63 (-1.46%)as of Oct 2, 2026
Every quarter, large institutional investment managers with over $100M in U.S.-listed assets under management disclose their U.S. equity holdings through 13F filings. Read together, those filings show which businesses professional capital is moving into and out of.
Price vs funds buying and selling
BSX · close · 13FReported Aug 14, 2026Price vs funds buying and selling data
Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-55.7%). 0 fund reports plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Funds buying · new + increased
Funds selling · reduced + closed
Net buyers vs sellers
Buying = new + increased; selling = reduced + closed. Counts exclude position changes under 5% of the fund's holding last quarter.Price and fund activity data
| Quarter | Funds buying | Funds selling | Bought | Sold | Filers | Reported |
|---|---|---|---|---|---|---|
| Q2 2025 | 560 | 392 | $8.6B | $8.3B | 1,610 | Aug 14, 2025 |
| Q3 2025 | 596 | 395 | $10.9B | $8.3B | 1,642 | Nov 14, 2025 |
| Q4 2025 | 541 | 482 | $8.66B | $11.6B | 1,710 | Feb 14, 2026 |
| Q1 2026 | 629 | 688 | $9.62B | $10.6B | 1,603 | May 15, 2026 |
| Q2 2026 | 569 | 760 | $6.85B | $7.98B | 1,395 | Aug 14, 2026 |
Quarterly action breakdown
Q2 2026
1,395 filersNew position
113$306M+7.17M sh
Increased
456$6.54B+153M sh
Reduced
472-$7.06B-165M sh
Out / sold
288-$926M-21.7M sh
Last 4 quarters · free
Reported Aug 14, 2026
| Fund | Action | Change in dollar | Value | % of portfolio | Reported |
|---|---|---|---|---|---|
| Massachusetts Financial Services Co | Added 126.06% | +$835M | $1.5B | 0.48% | Aug 3, 2026 |
| Primecap Management Co | Added 55.31% | +$768M | $2.16B | 1.28% | Aug 14, 2026 |
| Edgewood Management LLC | Sell 100% | -$479M | $0 | 0.00% | Aug 13, 2026 |
| FIL Ltd | Added 283.68% | +$389M | $526M | 0.38% | Aug 13, 2026 |
| Parnassus Investments, LLC | Reduce 85.32% | -$291M | $50.1M | 0.13% | Jul 29, 2026 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | Reduce 30.25% | -$171M | $394M | 0.30% | Aug 14, 2026 |
| Rathbones Group PLC | Reduce 60.06% | -$163M | $108M | 0.40% | Jul 23, 2026 |
| Ninety One UK Ltd | Reduce 52.08% | -$162M | $149M | 0.33% | Jul 16, 2026 |
| Wellington Management Group LLP | Reduce 18.75% | -$151M | $653M | 0.11% | Aug 14, 2026 |
| Ilex Capital Partners (UK) LLP | Sell 100% | -$140M | $0 | 0.00% | Aug 14, 2026 |
| First Manhattan Co. LLC. | Reduce 65.44% | -$137M | $72.4M | 0.18% | Aug 14, 2026 |
| Vontobel Holding Ltd. | Reduce 38.94% | -$133M | $208M | 0.66% | Aug 3, 2026 |
| Farallon Capital Management, L.L.C. | Added 40.83% | +$130M | $449M | 2.07% | Aug 14, 2026 |
| Adage Capital Partners GP, L.L.C. | Reduce 63.96% | -$126M | $71.3M | 0.10% | Aug 14, 2026 |
| Pictet Asset Management Holding SA | Reduce 53.26% | -$116M | $102M | 0.10% | Jul 30, 2026 |
| 1832 Asset Management L.P. | Reduce 37.17% | -$115M | $194M | 0.10% | Aug 13, 2026 |
| Holocene Advisors, LP | Reduce 76.47% | -$112M | $34.4M | 0.08% | Aug 14, 2026 |
| Schroder Investment Management Group | Reduce 35.08% | -$109M | $201M | 0.14% | Aug 13, 2026 |
| Alphinity Investment Management Pty Ltd | Sell 100% | -$105M | $0 | 0.00% | Jul 29, 2026 |
| Worldquant Millennium Advisors LLC | Reduce 99.75% | -$96.8M | $247K | 0.00% | Aug 14, 2026 |
| Voloridge Investment Management, LLC | Added 203.80% | +$93.8M | $140M | 0.59% | Aug 14, 2026 |
| Fred Alger Management, LLC | Sell 100% | -$91.3M | $0 | 0.00% | Aug 14, 2026 |
| Maverick Capital Ltd | Added 41.54% | +$74.4M | $253M | 2.24% | Aug 14, 2026 |
| Caisse de depot et placement du Quebec | Added 110.06% | +$69.8M | $133M | 0.19% | Aug 14, 2026 |
| Congress Asset Management Co | Reduce 99.37% | -$69.1M | $437K | 0.00% | Jul 7, 2026 |
| Great Lakes Advisors, LLC | Reduce 85.11% | -$68.2M | $11.9M | 0.09% | Aug 10, 2026 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Reduce 22.76% | -$67.7M | $230M | 0.23% | Aug 13, 2026 |
| Capital World Investors | Added 9.81% | +$64.1M | $718M | 0.08% | Aug 12, 2026 |
| Ensign Peak Advisors, Inc | Added 30.49% | +$58.6M | $251M | 0.41% | Aug 14, 2026 |
| Jennison Associates LLC | Sell 100% | -$56.3M | $0 | 0.00% | Aug 3, 2026 |
| Deerfield Management Company, L.P. | New Buy | +$56.1M | $56.1M | 0.59% | Aug 14, 2026 |
| Nordea Investment Management AB | Added 96.27% | +$54.4M | $111M | 0.09% | Aug 5, 2026 |
| Canada Pension Plan Investment Board | Added 15.26% | +$52.3M | $395M | 0.22% | Aug 14, 2026 |
| Employees Provident Fund Board | Added 57.35% | +$52.2M | $143M | 0.82% | Aug 12, 2026 |
| Vestal Point Capital, LP | Sell 100% | -$50.2M | $0 | 0.00% | Aug 14, 2026 |
| Sands Capital Management, LLC | Sell 100% | -$46.2M | $0 | 0.00% | Aug 13, 2026 |
| Handelsbanken Fonder AB | Reduce 38.76% | -$42.8M | $67.6M | 0.19% | Jul 10, 2026 |
| Cadian Capital Management, LP | Added 550.08% | +$39.9M | $47.2M | 3.57% | Aug 14, 2026 |
| LGT Capital Partners Ltd. | New Buy | +$39.1M | $39.1M | 1.98% | Aug 5, 2026 |
| Mirova US LLC | Added 40.76% | +$38.3M | $132M | 1.42% | Aug 14, 2026 |
| Huntington National Bank | Reduce 62.86% | -$37.7M | $22.3M | 0.11% | Aug 13, 2026 |
| SEB Asset Management AB | Reduce 41.82% | -$37.1M | $51.6M | 0.19% | Aug 4, 2026 |
| Retirement Systems of Alabama | Added 264.16% | +$35.5M | $48.9M | 0.15% | Jul 28, 2026 |
| MKP Capital Management, L.L.C. | Sell 100% | -$34.4M | $0 | 0.00% | Aug 7, 2026 |
| KBC Group NV | Reduce 32.77% | -$33.9M | $69.5M | 0.15% | Aug 5, 2026 |
| Abn Amro Investment Solutions | Reduce 86.49% | -$33M | $5.16M | 0.04% | Jul 23, 2026 |
| Erste Asset Management GmbH | Added 366.94% | +$31.5M | $40.1M | 0.31% | Jul 28, 2026 |
| Migdal Insurance & Financial Holdings Ltd. | Sell 100% | -$31.4M | $0 | 0.00% | Aug 10, 2026 |
| Public Sector Pension Investment Board | Added 35.01% | +$31M | $120M | 0.31% | Aug 13, 2026 |
| Causeway Capital Management LLC | New Buy | +$30.7M | $30.7M | 0.33% | Aug 13, 2026 |
| Lansforsakringar Fondforvaltning AB (publ) | Added 76.91% | +$29.3M | $67.5M | 0.30% | Aug 13, 2026 |
| Healthcare of Ontario Pension Plan Trust Fund | Reduce 86.63% | -$29.2M | $4.5M | 0.01% | Aug 13, 2026 |
| Swedbank AB | Reduce 51.33% | -$27.6M | $26.2M | 0.02% | Jul 15, 2026 |
| MUFG Securities EMEA plc | Added 1043.44% | +$27.1M | $29.7M | 0.31% | Aug 12, 2026 |
| AustralianSuper Pty Ltd | Reduce 94.89% | -$25.5M | $1.37M | 0.01% | Aug 12, 2026 |
| Korea Investment CORP | Reduce 51.38% | -$24.9M | $23.5M | 0.04% | Aug 12, 2026 |
| Bellevue Group AG | Reduce 39.49% | -$24.7M | $37.9M | 0.80% | Aug 14, 2026 |
| Polen Capital Management LLC | Reduce 99.18% | -$24.5M | $203K | 0.00% | Aug 4, 2026 |
| Natixis Advisors, LLC | Reduce 29.04% | -$23.2M | $56.6M | 0.06% | Aug 14, 2026 |
| E. Ohman J:or Asset Management AB | Reduce 91.36% | -$23.1M | $2.19M | 0.05% | Jul 10, 2026 |
| Employees Retirement System of Texas | Reduce 77.75% | -$22.3M | $6.38M | 0.05% | Aug 14, 2026 |
| DNB Asset Management AS | Added 97.77% | +$22M | $44.5M | 0.12% | Aug 11, 2026 |
| M&G PLC | Added 353.61% | +$21.8M | $27.9M | 0.14% | Aug 6, 2026 |
| Prosight Management, LP | Added 59.67% | +$20.3M | $54.2M | 9.34% | Aug 14, 2026 |
| BlueSpruce Investments, LP | Sell 100% | -$19.2M | $0 | 0.00% | Aug 14, 2026 |
| Catalio Capital Management, LP | Sell 100% | -$18.8M | $0 | 0.00% | Aug 14, 2026 |
| ABN AMRO Bank N.V. | Reduce 98.05% | -$18.7M | $372K | 0.00% | Aug 6, 2026 |
| Longaeva Partners L.P. | Reduce 43.50% | -$17.8M | $23.1M | 0.50% | Aug 14, 2026 |
| Unisphere Establishment | Reduce 14.80% | -$17.7M | $102M | 0.87% | Aug 14, 2026 |
| Renaissance Group LLC | Sell 100% | -$17.4M | $0 | 0.00% | Aug 13, 2026 |
| Zurich Insurance Group Ltd | Sell 100% | -$17.1M | $0 | 0.00% | Aug 14, 2026 |
| Silvercrest Asset Management Group LLC | Added 594.48% | +$16.9M | $19.7M | 0.13% | Aug 14, 2026 |
| Homestead Advisers Corp | Reduce 41.40% | -$16.6M | $23.6M | 0.59% | Aug 13, 2026 |
| Rit Capital Partners PLC | New Buy | +$16.6M | $16.6M | 2.67% | Aug 11, 2026 |
| FORA Capital, LLC | Added 103.88% | +$16.4M | $32.3M | 2.22% | Aug 13, 2026 |
| Credit Agricole S A | Reduce 18.50% | -$16M | $70.3M | 0.14% | Aug 14, 2026 |
| Natixis | Reduce 68.89% | -$15.9M | $7.17M | 0.03% | Aug 13, 2026 |
| Ossiam | New Buy | +$15.8M | $15.8M | 0.21% | Aug 13, 2026 |
| Quantinno Capital Management LP | Added 64.01% | +$15.7M | $40.2M | 0.05% | Aug 13, 2026 |
| Bridgewater Associates, LP | Added 474.13% | +$15.6M | $18.9M | 0.08% | Aug 14, 2026 |
| Cornerstone Advisors, LLC | Sell 100% | -$15M | $0 | 0.00% | Aug 7, 2026 |
| Integral Health Asset Management, LLC | Added 63.64% | +$14.9M | $38.4M | 1.52% | Aug 14, 2026 |
| Danica Pension, Livsforsikringsaktieselskab | Reduce 36.01% | -$14.9M | $26.5M | 0.42% | Aug 10, 2026 |
| Harvest Portfolios Group Inc. | Added 37.86% | +$14.8M | $54M | 0.76% | Aug 13, 2026 |
| DKRT Investments Corp. | Added 79.31% | +$14.7M | $33.3M | 8.13% | Aug 13, 2026 |
| Ci Investments Inc. | Reduce 47.80% | -$14.3M | $15.7M | 0.05% | Aug 13, 2026 |
| IMC-Chicago, LLC | Reduce 63.19% | -$14M | $8.18M | 0.00% | Aug 6, 2026 |
| Bourgeon Capital Management LLC | New Buy | +$13.7M | $13.7M | 2.02% | Jul 22, 2026 |
| Groupe la Francaise | Reduce 88.64% | -$13.1M | $1.68M | 0.02% | Aug 25, 2026 |
| VANGUARD ASSET MANAGEMENT, Ltd | Added 11.92% | +$13.1M | $123M | 0.08% | Aug 13, 2026 |
| Whittier Trust Co | Reduce 88.02% | -$12.9M | $1.75M | 0.02% | Jul 28, 2026 |
| LGT Group Foundation | Reduce 96.19% | -$12.8M | $508K | 0.01% | Aug 10, 2026 |
| Aberdeen Group plc | Added 10.86% | +$12.8M | $131M | 0.18% | Jul 31, 2026 |
| DG Capital Management, LLC | New Buy | +$12.8M | $12.8M | 2.70% | Aug 12, 2026 |
| Anchor Capital Advisors LLC | Reduce 61.18% | -$12.1M | $7.68M | 0.22% | Aug 5, 2026 |
| Public Employees Retirement Association of Colorado | Reduce 16.66% | -$12.1M | $60.5M | 0.21% | Aug 11, 2026 |
| Teachers Retirement System of the State of Kentucky | Added 239.65% | +$11.8M | $16.8M | 0.11% | Aug 12, 2026 |
| Parkman Healthcare Partners LLC | Reduce 59.78% | -$11.5M | $7.7M | 0.79% | Aug 14, 2026 |
| South Dakota Investment Council | New Buy | +$11.4M | $11.4M | 0.20% | Aug 11, 2026 |
| Osterweis Capital Management Inc | Added 60.33% | +$11.4M | $30.3M | 1.43% | Aug 14, 2026 |