Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.
BSX
BOSTON SCIENTIFIC CORPData as of 2026 Q1 (03-31) · 13F snapshot
Summary
BOSTON SCIENTIFIC CORP (BSX) is held by 13 tracked hedge-fund managers, a combined reported value of ~$2.09B; the largest are Ken Griffin, David Einhorn, Izzy Englander. This quarter: 3 added, 4 trimmed, 1 closed. 20 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.
Attention · HighThis quarter · Cooling
Gurus holding13
Congress trades20
Price$46.91vs quarter-end-25.24%
Sectors1
This quarter's moves
Top holderKen GriffinNew0
Added3
Trimmed / sold5
David EinhornNew large stake
Value $252.69M9.8% of portfolio28,077,1512009 Q4
Steven CohenAdd
Value $231.38M0.4% of portfolio3,687,3152026 Q1
Dan LoebHold
Value $226.10M2.6% of portfolio5,000,0002019 Q4
Value $197.79M0.3% of portfolio3,152,0052026 Q1
Value $132.46M— of portfolio2,110,9002026 Q1
Value $101.15M— of portfolio1,611,9002026 Q1
Value $57.13M— of portfolio910,4002026 Q1
Value $52.25M— of portfolio832,6002026 Q1
David TepperTrim
Value $30.09M0.5% of portfolio787,5002020 Q3
Value $10.40M— of portfolio165,8002026 Q1
George SorosHold
Value $10.09M0.3% of portfolio100,0002025 Q1
Value $2.02M— of portfolio32,2002026 Q1
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| David Einhorn | $252.69M | 9.8% | New large stake |
| Steven Cohen | $231.38M | 0.4% | Add |
| Dan Loeb | $226.10M | 2.6% | Hold |
| Renaissance Technologies | $197.79M | 0.3% | Add |
| Steven CohenCALL | $132.46M | — | — |
| Ken GriffinCALL | $101.15M | — | — |
| Ken GriffinPUT | $57.13M | — | — |
| Izzy EnglanderCALL | $52.25M | — | — |
| David Tepper | $30.09M | 0.5% | Trim |
| Izzy EnglanderPUT | $10.40M | — | — |
| George Soros | $10.09M | 0.3% | Hold |
| Steven CohenPUT | $2.02M | — | — |