Boston Scientific
1,643 hedge funds and large institutions have $135B invested in Boston Scientific in 2025 Q1 according to their latest regulatory filings, with 230 funds opening new positions, 667 increasing their positions, 553 reducing their positions, and 73 closing their positions.
215% more first-time investments, than exits
New positions opened: 230 | Existing positions closed: 73
31% more call options, than puts
Call options by funds: $1.07B | Put options by funds: $819M
31% more funds holding in top 10
Funds holding in top 10: 39 → 51 (+12)
21% more repeat investments, than reductions
Existing positions increased: 667 | Existing positions reduced: 553
12% more capital invested
Capital invested by funds: $120B → $135B (+$14.8B)
9% more funds holding
Funds holding: 1,513 → 1,643 (+130)
0.19% less ownership
Funds ownership: 90.98% → 90.79% (-0.19%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
JP Morgan Chase
New York
|
+$532M |
| 2 |
Bank of America
Charlotte,
North Carolina
|
+$411M |
| 3 |
Two Sigma Advisers
New York
|
+$347M |
| 4 |
D.E. Shaw & Co
New York
|
+$310M |
| 5 |
SP
SurgoCap Partners
New York
|
+$267M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Franklin Resources
San Mateo,
California
|
-$915M |
| 2 |
DZ Bank
Frankfurt Am Main,
Germany
|
-$460M |
| 3 |
Fidelity Investments
Boston,
Massachusetts
|
-$387M |
| 4 |
Massachusetts Financial Services
Boston,
Massachusetts
|
-$316M |
| 5 |
Impax Asset Management Group
London,
United Kingdom
|
-$306M |
BSX Hedge Fund Activity: Q1 2025 in Review
1,643 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in Boston Scientific (BSX) for Q1 2025, worth a combined $135B — up 12% from $120B a quarter earlier.
Buyers outnumbered sellers: 230 funds opened new BSX positions and 73 closed out — a net gain of 157 holders — while 667 added to existing stakes and 553 trimmed.
The largest buyer was JP Morgan Chase, adding an estimated $532M. The largest seller was Franklin Resources, cutting an estimated $915M.
- 1,643 institutional investors held Boston Scientific (BSX) as of Q1 2025, up from 1,513 in Q4 2024.
- Funds reported $135B of Boston Scientific stock for Q1 2025, up 12% quarter-over-quarter.
- 230 funds opened new Boston Scientific positions in Q1 2025 and 73 closed out, a net change of +157 holders.
- The largest Boston Scientific buyer in Q1 2025 was JP Morgan Chase, an estimated $532M added.
- The largest Boston Scientific seller in Q1 2025 was Franklin Resources, an estimated $915M sold.
Based on aggregated 13F filings for Q1 2025.