BOSTON SCIENTIFIC CORP (BSX): Institutional Ownership
Hedge funds and institutional managers reporting a position in BSX · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
38
13F filers
Aggregate Value
$5.4B
Across holders
Last Price
$44.23
2026-06-26
Sector
Health Care
GICS
Holder activity7 new17 added12 reduced
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| PRIMECAP MANAGEMENT CO/CA/ CIK 0000763212 | Institutional Manager | 32.53M | $2.0B | 37.7% | 1.6% | Added | +$90.0M | Q1 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 9.41M | $590.6M | 10.9% | 0.5% | Added | +$590.3M | Q1 2026 |
| Egerton Capital (UK) LLP CIK 0001581811 | Hedge Fund | 5.39M | $513.5M | 9.5% | 5.6% | New | — | Q4 2025 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 5.57M | $349.5M | 6.5% | 0.4% | Added | +$347.2M | Q1 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 0001165408 | Hedge Fund | 4.63M | $290.7M | 5.4% | 0.4% | Added | +$160.1M | Q1 2026 |
| MAVERICK CAPITAL LTD CIK 0000934639 | Hedge Fund | 4.20M | $263.2M | 4.9% | 3.0% | Added | +$78.5M | Q1 2026 |
| VIKING GLOBAL INVESTORS LP CIK 0001103804 | Hedge Fund | 2.51M | $239.3M | 4.4% | 0.6% | New | — | Q4 2025 |
| Holocene Advisors, LP CIK 0001700574 | Hedge Fund | 3.43M | $215.2M | 4.0% | 0.5% | Reduced | $-65.4M | Q1 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 3.15M | $197.8M | 3.7% | 0.3% | Added | +$48.3M | Q1 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 2.81M | $176.1M | 3.3% | 0.0% | Added | +$141.3M | Q1 2026 |
| STEADFAST CAPITAL MANAGEMENT LP CIK 0001214822 | Hedge Fund | 1.10M | $117.8M | 2.2% | 2.1% | New | — | Q2 2025 |
| Schonfeld Strategic Advisors LLC CIK 0001665241 | Hedge Fund | 1.11M | $69.4M | 1.3% | 0.5% | Added | +$31.8M | Q1 2026 |
| Walleye Capital LLC CIK 0001758720 | Hedge Fund | 836K | $52.5M | 1.0% | 0.2% | Added | +$41.5M | Q1 2026 |
| SANDS CAPITAL MANAGEMENT, LLC CIK 0001020066 | Institutional Manager | 736K | $46.2M | 0.9% | 0.2% | Reduced | $-4.3M | Q1 2026 |
| TUDOR INVESTMENT CORP ET AL CIK 0000923093 | Hedge Fund | 633K | $39.7M | 0.7% | 0.1% | Added | +$39.4M | Q1 2026 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 618K | $38.8M | 0.7% | 0.0% | Reduced | $-19.5M | Q1 2026 |
| Hudson Bay Capital Management LP CIK 0001393825 | Hedge Fund | 484K | $30.4M | 0.6% | 0.1% | Unchanged | +$0 | Q1 2026 |
| Gotham Asset Management, LLC CIK 0001510387 | Hedge Fund | 483K | $30.3M | 0.6% | 0.1% | Added | +$20.3M | Q1 2026 |
| Fisher Asset Management, LLC CIK 0000850529 | Institutional Manager | 451K | $28.3M | 0.5% | 0.0% | Reduced | $-545.1M | Q1 2026 |
| ExodusPoint Capital Management, LP CIK 0001736225 | Hedge Fund | 311K | $19.5M | 0.4% | 0.2% | Added | +$8.7M | Q1 2026 |
Added
Institutional Manager
$2.0B· 37.7% of total· 1.6% port· 32.53M sh· +$90.0M QoQ· Q1 2026
Added
Hedge Fund
$590.6M· 10.9% of total· 0.5% port· 9.41M sh· +$590.3M QoQ· Q1 2026
New
Hedge Fund
$513.5M· 9.5% of total· 5.6% port· 5.39M sh· — QoQ· Q4 2025
Added
Hedge Fund
$349.5M· 6.5% of total· 0.4% port· 5.57M sh· +$347.2M QoQ· Q1 2026
Added
Hedge Fund
$290.7M· 5.4% of total· 0.4% port· 4.63M sh· +$160.1M QoQ· Q1 2026
Added
Hedge Fund
$263.2M· 4.9% of total· 3.0% port· 4.20M sh· +$78.5M QoQ· Q1 2026
New
Hedge Fund
$239.3M· 4.4% of total· 0.6% port· 2.51M sh· — QoQ· Q4 2025
Reduced
Hedge Fund
$215.2M· 4.0% of total· 0.5% port· 3.43M sh· $-65.4M QoQ· Q1 2026
Added
Hedge Fund
$197.8M· 3.7% of total· 0.3% port· 3.15M sh· +$48.3M QoQ· Q1 2026
Added
Hedge Fund
$176.1M· 3.3% of total· 0.0% port· 2.81M sh· +$141.3M QoQ· Q1 2026
New
Hedge Fund
$117.8M· 2.2% of total· 2.1% port· 1.10M sh· — QoQ· Q2 2025
Added
Hedge Fund
$69.4M· 1.3% of total· 0.5% port· 1.11M sh· +$31.8M QoQ· Q1 2026
Added
Hedge Fund
$52.5M· 1.0% of total· 0.2% port· 836K sh· +$41.5M QoQ· Q1 2026
Reduced
Institutional Manager
$46.2M· 0.9% of total· 0.2% port· 736K sh· $-4.3M QoQ· Q1 2026
Added
Hedge Fund
$39.7M· 0.7% of total· 0.1% port· 633K sh· +$39.4M QoQ· Q1 2026
Reduced
Hedge Fund
$38.8M· 0.7% of total· 0.0% port· 618K sh· $-19.5M QoQ· Q1 2026
Unchanged
Hedge Fund
$30.4M· 0.6% of total· 0.1% port· 484K sh· +$0 QoQ· Q1 2026
Added
Hedge Fund
$30.3M· 0.6% of total· 0.1% port· 483K sh· +$20.3M QoQ· Q1 2026
Reduced
Institutional Manager
$28.3M· 0.5% of total· 0.0% port· 451K sh· $-545.1M QoQ· Q1 2026
Added
Hedge Fund
$19.5M· 0.4% of total· 0.2% port· 311K sh· +$8.7M QoQ· Q1 2026
Added
Institutional Manager
$9.7M· 0.2% of total· 0.1% port· 155K sh· +$2.7M QoQ· Q1 2026
Added
Hedge Fund
$6.7M· 0.1% of total· 0.1% port· 107K sh· +$2.5M QoQ· Q1 2026
Reduced
Hedge Fund
$6.6M· 0.1% of total· 0.1% port· 105K sh· $-6.1M QoQ· Q1 2026
Added
Hedge Fund
$6.0M· 0.1% of total· 0.0% port· 95K sh· +$5.7M QoQ· Q1 2026
Unchanged
Institutional Manager
$5.6M· 0.1% of total· 0.0% port· 89K sh· +$0 QoQ· Q1 2026
Reduced
Hedge Fund
$5.0M· 0.1% of total· 0.0% port· 60K sh· $-10.1M QoQ· Q3 2024
Reduced
Hedge Fund
$4.8M· 0.1% of total· 0.0% port· 77K sh· $-1.1M QoQ· Q1 2026
Reduced
Hedge Fund
$4.2M· 0.1% of total· 0.0% port· 66K sh· $-825K QoQ· Q1 2026
New
Hedge Fund
$4.0M· 0.1% of total· 0.1% port· 63K sh· — QoQ· Q1 2026
Reduced
Hedge Fund
$3.3M· 0.1% of total· 0.6% port· 33K sh· $-2.6M QoQ· Q1 2025
Reduced
Hedge Fund
$1.5M· 0.0% of total· 0.0% port· 24K sh· $-154.3M QoQ· Q1 2026
New
Family Office
$1.1M· 0.0% of total· 0.0% port· 10K sh· — QoQ· Q2 2025
New
Hedge Fund
$1.0M· 0.0% of total· 0.0% port· 16K sh· — QoQ· Q1 2026
New
Institutional Manager
$941K· 0.0% of total· 0.0% port· 15K sh· — QoQ· Q1 2026
Reduced
Hedge Fund
$508K· 0.0% of total· 0.0% port· 10K sh· $-25K QoQ· Q1 2026
Added
Hedge Fund
$380K· 0.0% of total· 0.0% port· 6K sh· +$254K QoQ· Q1 2026
Reduced
Hedge Fund
$342K· 0.0% of total· 0.0% port· 5K sh· $-710K QoQ· Q1 2026
Added
Hedge Fund
$31K· 0.0% of total· 0.0% port· 494 sh· +$12K QoQ· Q1 2026
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