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Boston Scientific
BSX

1,688 hedge funds and large institutions have $145B invested in Boston Scientific in 2025 Q2 according to their latest regulatory filings, with 154 funds opening new positions, 751 increasing their positions, 552 reducing their positions, and 91 closing their positions.

New
Increased
Maintained
Reduced
Closed

69% more first-time investments, than exits

New positions opened: 154 | Existing positions closed: 91

36% more repeat investments, than reductions

Existing positions increased: 751 | Existing positions reduced: 552

26% more call options, than puts

Call options by funds: $1.08B | Put options by funds: $859M

7% more capital invested

Capital invested by funds: $135B → $145B (+$10B)

3% more funds holding

Funds holding: 1,643 → 1,688 (+45)

0.75% more ownership

Funds ownership: 90.79% → 91.53% (+0.75%)

18% less funds holding in top 10

Funds holding in top 10: 51 → 42 (-9)

Holders
1,688
Holders Change
+45
Holders Change %
+2.74%
% of All Funds
22.22%
Holding in Top 10
42
Holding in Top 10 Change
-9
Holding in Top 10 Change %
-17.65%
% of All Funds
0.55%
New
154
Increased
751
Reduced
552
Closed
91
Calls
$1.08B
Puts
$859M
Net Calls
+$225M
Net Calls Change
-$30.7M

Top Buyers

Rank Fund Capital Flow
1
Edgewood Management
Edgewood Management
Connecticut
+$703M
2
BlackRock
BlackRock
New York
+$508M
3
VOYA Investment Management
VOYA Investment Management
Georgia
+$485M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$295M
5
Bessemer Group
Bessemer Group
New Jersey
+$293M

Top Sellers

Rank Fund Capital Flow
1
Fidelity Investments
Fidelity Investments
Massachusetts
-$2.05B
2
JP Morgan Chase
JP Morgan Chase
New York
-$593M
3
Millennium Management
Millennium Management
New York
-$375M
4
Massachusetts Financial Services
Massachusetts Financial Services
Massachusetts
-$371M
5
Winslow Capital Management
Winslow Capital Management
Minnesota
-$268M
Name Holding Trade Value Shares
Change 		Change in
Stake
IA
676
IFP Advisors
Florida
$2.37M +$538K +5,313 +32%
CIM
677
CIM Investment Management
Pennsylvania
$2.37M +$1.22M +12,023 +100%
PIM
678
Plato Investment Management
Australia
$2.36M +$95.5K +944 +4%
SFP
679
Shepherd Financial Partners
Massachusetts
$2.35M +$55.8K +551 +3%
SAI
680
Systematic Alpha Investments
New Jersey
$2.34M – – –
MFS
681
Mattson Financial Services
Michigan
$2.34M -$40.4K -399 -2%
GIM
682
Glenmede Investment Management
Pennsylvania
$2.33M +$2.2M +21,706 New
BCI
683
Blue Capital Inc
Nebraska
$2.31M +$2.17M +21,494 New
HCA
684
Harbor Capital Advisors
Illinois
$2.3M -$12.6K -125 -0.6%
SA
685
Strategic Advocates
Utah
$2.3M +$153K +1,517 +8%
WPC
686
Wedmont Private Capital
Pennsylvania
$2.28M +$63.2K +625 +3%
SAM
687
Sectoral Asset Management
Quebec, Canada
$2.27M -$314K -3,100 -13%
FHA
688
Flagship Harbor Advisors
Massachusetts
$2.23M -$39.6K -391 -2%
AWA
689
Arkadios Wealth Advisors
Georgia
$2.23M +$162K +1,606 +8%
ES
690
Element Squared
Minnesota
$2.19M +$2.07M +20,433 New
QCM
691
Qsemble Capital Management
New York
$2.19M -$724K -7,152 -26%
SCA
692
Snowden Capital Advisors
New York
$2.19M -$290K -2,864 -12%
PAS
693
Parsonex Advisory Services
Colorado
$2.17M +$2.05M +20,244 New
FB
694
Fulton Bank
Pennsylvania
$2.17M +$25.4K +251 +1%
M
695
Mirova
France
$2.17M -$216K -2,136 -10%
FRA
696
Frank Rimerman Advisors
California
$2.16M -$100K -989 -5%
NRG
697
Nemes Rush Group
Michigan
$2.15M +$1.96M +19,391 +3,054%
MGM
698
Miura Global Management
New York
$2.15M -$2.02M -20,000 -50%
GIC
699
Generali Investments CEE
Czech Republic
$2.15M – – –
IAS
700
IMA Advisory Services
Colorado
$2.14M +$4.76K +47 +0.2%
26 27
28
29 30

BSX Hedge Fund Activity: Q2 2025 in Review

1,688 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Boston Scientific (BSX) for Q2 2025, worth a combined $145B — up 7.4% from $135B a quarter earlier.

Buyers outnumbered sellers: 154 funds opened new BSX positions and 91 closed out — a net gain of 63 holders — while 751 added to existing stakes and 552 trimmed.

The largest buyer was Edgewood Management, opening a new position worth an estimated $703M. The largest seller was Fidelity Investments, cutting an estimated $2.05B.

  • 1,688 institutional investors held Boston Scientific (BSX) as of Q2 2025, up from 1,643 in Q1 2025.
  • Funds reported $145B of Boston Scientific stock for Q2 2025, up 7.4% quarter-over-quarter.
  • 154 funds opened new Boston Scientific positions in Q2 2025 and 91 closed out, a net change of +63 holders.
  • The largest Boston Scientific buyer in Q2 2025 was Edgewood Management, an estimated $703M added.
  • The largest Boston Scientific seller in Q2 2025 was Fidelity Investments, an estimated $2.05B sold.

Based on aggregated 13F filings for Q2 2025.