Boston Scientific Corp
Held by 18 tracked managers as of Q2 2026 · CUSIP ⓘCUSIP: A 9-character ID for one specific security - one share class of one company, or one bond. Tickers can change and can mean different things in different countries; a CUSIP always identifies exactly the same security, which is why filings use it. Guide 101137107 · Sector ⓘGICS sectors: The 11-sector system most investors know (Global Industry Classification Standard): Technology, Health Care, Financials and so on. This site assigns each company a GICS-style sector from its SIC code, with a few hand corrections, so sector pages match the names investors expect. Guide
Educational and informational only, not personalized investment advice. Based on public filings that may be delayed or contain errors; verify with the original filings. Disclaimer
Tracked capital in this stock
Total value held (area) and number of managers (line). Dips can mean a large holder filed that quarter confidentially (e.g. Norges Bank in Q1/Q3).
Aggregate buying and selling
Net share change reported each quarter
Who owns BSX?
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Who owns BSX? — Q2 2026
Holders ranked by position size, with each one's quarter-over-quarter change.
Column filters
| # | Manager | Fund | Shares | Value ↓ | % of their portfolio | QoQ | Δ shares | Δ shares % | Est. Δ value ⓘChange in shares × this quarter's price |
|---|---|---|---|---|---|---|---|---|---|
| 1 | David Shaw | D.E. Shaw & Co. | 25.46M | $1.09B | 0.7% | Added | +1.1M | +4.7% | +$48.87M |
| 2 | Norges Bank | Norges Bank Investment Management | 21.17M | $903.54M | 0.1% | — | — | — | — |
| 3 | Two Sigma | Two Sigma Investments | 19.36M | $826.24M | 0.6% | Added | +9.9M | +105.7% | +$424.57M |
| 4 | Ken Griffin | Citadel Advisors | 4.99M | $212.88M | 0.1% | Added | +770.4K | +18.3% | +$32.88M |
| 5 | Israel Englander | Millennium Management | 5.44M | $210.74M | 0.1% | Added | +1.1M | +25.4% | +$42.62M |
| 6 | Jim Simons | Renaissance Technologies | 2.41M | $102.94M | 0.1% | Reduced | -740.0K | -23.5% | -$31.58M |
| 7 | Parnassus Investments | Parnassus Investments LLC | 1.17M | $50.14M | 0.1% | Reduced | -6.8M | -85.3% | -$291.46M |
| 8 | Causeway | Causeway Capital Management | 720.34K | $30.74M | 0.3% | New | +720.3K | — | +$30.74M |
| 9 | Mawer | Mawer Investment Management | 530.53K | $22.64M | 0.2% | Reduced | -59.1K | -10.0% | -$2.52M |
| 10 | Ray Dalio | Bridgewater Associates | 442.04K | $18.87M | 0.1% | Added | +365.0K | +474.1% | +$15.58M |
| 11 | Steve Cohen | Point72 Asset Management | 365.24K | $15.59M | 0.0% | Reduced | -3.3M | -90.1% | -$141.79M |
| 12 | Ken Fisher | Fisher Asset Management | 333.53K | $14.24M | 0.0% | Reduced | -117.1K | -26.0% | -$5.00M |
| 13 | Diamond Hill | Diamond Hill Capital Management | 157.83K | $6.74M | 0.1% | Added | +7.7K | +5.1% | +$329.28K |
| 14 | Larry Robbins | Glenview Capital | 113.10K | $4.83M | 0.1% | New | +113.1K | — | +$4.83M |
| 15 | Dodge & Cox | Dodge & Cox | 87.48K | $3.73M | 0.0% | Reduced | -1.4K | -1.6% | -$59.75K |
| 16 | Mario Gabelli | GAMCO Investors | 64.56K | $2.76M | 0.0% | Reduced | -90.6K | -58.4% | -$3.87M |
| 17 | Jeremy Grantham | GMO | 21.80K | $930.42K | 0.0% | Added | +6.8K | +45.3% | +$290.22K |
| 18 | Polen Capital | Polen Capital Management | 4.75K | $202.73K | 0.0% | Reduced | -575.0K | -99.2% | -$24.54M |
Column filters
| Manager | Fund | Shares sold | Value last quarter ↓ |
|---|---|---|---|
| Fred Alger | Fred Alger Management | -1.5M | $91.28M |
| Sands Capital | Sands Capital Management | -736.1K | $46.19M |
| Stephen Mandel | Lone Pine Capital | -104.7K | $6.57M |
Politician trades
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No politician trades match these filters.