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Boston Scientific

1,649 hedge funds and large institutions have $84.2B invested in Boston Scientific in 2026 Q1 according to their latest regulatory filings, with 187 funds opening new positions, 666 increasing their positions, 629 reducing their positions, and 276 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less funds holding

Funds holding:

32% less first-time investments, than exits

New positions opened: 187 | Existing positions closed: 276

32% less funds holding in top 10

Funds holding in top 10: 3725 (-12)

35% less capital invested

Capital invested by funds: $130B → $84.2B (-$45.8B)

Holders
1,649
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
25
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.56B
Puts
$640M
Net Calls
Net Calls Change

Top Buyers

1 +$1.05B
2 +$730M
3 +$706M
4
JP Morgan Chase
JP Morgan Chase
New York
+$638M
5
Two Sigma Investments
Two Sigma Investments
New York
+$555M
Name Holding Trade Value Shares
Change
Change in
Stake
Voloridge Investment Management
151
Voloridge Investment Management
Florida
$67.7M
HF
152
HRT Financial
New York
$66M
Federated Hermes
153
Federated Hermes
Pennsylvania
$65.3M
Susquehanna International Group
154
Susquehanna International Group
Pennsylvania
$64.8M
SEI Investments
155
SEI Investments
Pennsylvania
$64.1M
Nomura Asset Management
156
Nomura Asset Management
Japan
$63.7M
FDCDDQ
157
Federation des caisses Desjardins du Quebec
Quebec, Canada
$62.6M
DPL
158
Danica Pension Livsforsikrings
$60.9M
Mackenzie Financial
159
Mackenzie Financial
Ontario, Canada
$60.2M
LP
160
Longaeva Partners
Illinois
$60.1M
AT
161
AMF Tjänstepension
Sweden
$59.7M
HA
162
Homestead Advisers
Virginia
$59.1M
SG Americas Securities
163
SG Americas Securities
New York
$58.4M
PPF
164
PFA Pension Forsikringsaktieselskab
$58.1M
BPC
165
Banque Pictet & Cie
Switzerland
$57.8M
HPG
166
Harvest Portfolios Group
Ontario, Canada
$57.5M
Jennison Associates
167
Jennison Associates
New York
$56.3M
AAIS
168
ABN AMRO Investment Solutions
$56.1M
LF
169
Lansforsakringar Fondforvaltning
Sweden
$56.1M
FFM
170
Fisher Funds Management
New Zealand
$54M
Northwestern Mutual Wealth Management
171
Northwestern Mutual Wealth Management
Wisconsin
$53.6M
LPL Financial
172
LPL Financial
California
$53.2M
Walleye Capital
173
Walleye Capital
New York
$52.5M
DB
174
Danske Bank
Denmark
$52.4M
State of Wisconsin Investment Board
175
State of Wisconsin Investment Board
Wisconsin
$52.3M