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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
IMC Chicago
226
IMC Chicago
Illinois
$32.7M
RSCM
227
Rock Springs Capital Management
Maryland
$32.3M
State of New Jersey Common Pension Fund D
228
State of New Jersey Common Pension Fund D
New Jersey
$31.7M
MIFH
229
Migdal Insurance & Financial Holdings
Israel
$31.4M
GIA
230
Gateway Investment Advisers
Ohio
$31.3M
Victory Capital Management
231
Victory Capital Management
Texas
$31.2M
Fiera Capital (Canada)
232
Fiera Capital (Canada)
Quebec, Canada
$31.2M
NAMI
233
Nomura Asset Management International
Pennsylvania
$31M
ACM
234
Aquatic Capital Management
Illinois
$30.8M
CBUSF
235
Construction & Building Unions Superannuation Fund
Australia
$30.7M
Hudson Bay Capital Management
236
Hudson Bay Capital Management
Connecticut
$30.4M
AV
237
ASR Vermogensbeheer
Netherlands
$30.4M
GAM
238
Gotham Asset Management
New York
$30.3M
ABC
239
Associated Banc-Corp
Wisconsin
$30.1M
Cetera Investment Advisers
240
Cetera Investment Advisers
Illinois
$29.7M
OIAM
241
OFI Invest Asset Management
France
$29.4M
RAM
242
Resona Asset Management
Japan
$29.1M
ACA
243
Anchor Capital Advisors
Massachusetts
$29.1M
FAF
244
Fjarde Ap-fonden
Sweden
$29M
Fisher Asset Management
245
Fisher Asset Management
Washington
$28.3M
YIH
246
Y-Intercept (HK)
Hong Kong
$28.3M
PHP
247
Parkman Healthcare Partners
Connecticut
$28.2M
Toronto Dominion Bank
248
Toronto Dominion Bank
Ontario, Canada
$28.1M
OCM
249
Osterweis Capital Management
California
$27.7M
AAB
250
ABN AMRO Bank
Netherlands
$27.7M