WhaleCreep

Which hedge funds own BSX? BOSTON SCIENTIFIC CORP, Q2 2026 13F holders

HealthcareMedical Devices

116 tracked hedge funds disclosed a position in BSX (BOSTON SCIENTIFIC CORP) in their Q2 2026 13F filings, worth $6.6bn in total. The largest holder by portfolio weight is Prosight Management, LP at 9.3% of its book. 22 opened a new position this quarter: DG Capital Management, LLC, Yakira Capital Management, Inc., Masters Capital Management LLC, Lecap Asset Management Ltd. 27 exited: Bancreek Capital Management, LP, Catalio Capital Management, LP, Ilex Capital Partners (UK) LLP.

116
Holders
Tracked managers whose filing for the quarter reports a long equity position in the security.
22
New this quarter
Holders whose previous filing (at most two quarters earlier) did not report the security.
27
Exited this quarter
Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
$180m
Inflow, new holders
Combined value of the positions the new holders reported for the quarter.
$332m
Outflow, exits
Combined value the exiting managers reported for the security in their previous filing.
$6.6bn
Combined value
Sum of the holders' reported positions in the security.
9.4%
Share of managers holding
Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.

Holders, Q2 2026

116 rows
Prosight Management, LP Hedge fund9.3%$54.2m1.27m+60%added
DG Capital Management, LLC Hedge fund4.4%$12.8m300,000–new
Cadian Capital Management, LP Hedge fund3.6%$47.2m1.11m+550%added
Encore Global Management, LP Hedge fund3.1%$3.1m73,700+58%added
Sivik Global Healthcare LLC Hedge fund3.0%$3.9m62,0000.0%held
Farallon Capital Management, L.L.C. Hedge fund2.6%$449m10.52m+41%added
Eagle Health Investments LP Hedge fund2.6%$15.8m369,164+26%added
Maverick Capital Ltd Hedge fund2.3%$253m5.94m+42%added
FORA Capital, LLC Hedge fund2.2%$32.3m756,269+104%added
Yakira Capital Management, Inc. Hedge fund1.8%$6.0m140,165–new
Integral Health Asset Management, LLC Hedge fund1.6%$38.4m900,000+64%added
Masters Capital Management LLC Hedge fund1.5%$10.7m250,000–new
Aquatic Capital Management LLC Hedge fund1.4%$42.1m985,535+101%added
Sirios Capital Management L P Hedge fund1.4%$11.6m272,493+5.7%added
Exome Asset Management LLC Hedge fund1.3%$2.1m48,3470.0%held
Unifi Asset Management LP Hedge fund1.2%$1.8m41,1230.0%held
Orbimed Advisors LLC Hedge fund1.2%$63.3m1.48m−38%reduced
Twinbeech Capital LP Hedge fund1.2%$6.4m149,622+20%added
Rock Springs Capital Management LP Hedge fund1.1%$22.6m528,500+2.6%added
Crystal Rock Capital Management Hedge fund1.0%$2.0m47,245−6.7%reduced
Quantitative Investment Management, LLC Hedge fund1.0%$9.1m213,737+128%added
Y-Intercept (Hong Kong) Ltd Hedge fund0.9%$47.8m1.12m+149%added
Braidwell LP Hedge fund0.9%$25.1m587,567+70%added
Occudo Quantitative Strategies LP Hedge fund0.9%$16.9m397,122+159%added
Lecap Asset Management Ltd Hedge fund0.8%$1.9m44,117–new
Parkman Healthcare Partners LLC Hedge fund0.8%$7.7m180,481−60%reduced
Qsemble Capital Management, LP Hedge fund0.7%$5.3m123,179−45%reduced
D. E. Shaw & Co., Inc. Hedge fund0.7%$1.1bn25.46m+4.7%added
Entropy Technologies, LP Hedge fund0.6%$16.0m375,251+33%added
Two Sigma Investments, LP Hedge fund0.6%$826m19.36m+106%added
Voloridge Investment Management, LLC Hedge fund0.6%$140m3.28m+204%added
Deerfield Management Company, L.P. Hedge fund0.6%$56.1m1.31m–new
Avidity Partners Management LP Hedge fund0.5%$3.4m80,000+33%added
Machina Capital S.A.S. Hedge fund0.5%$3.3m77,929+1115%added
Teza Capital Management LLC Hedge fund0.5%$267k6,258+21%added
Caption Management, LLC Hedge fund0.5%$13.3m312,050−17%reduced
Senator Investment Group LP Hedge fund0.5%$12.8m300,000–new
Capital Fund Management S.A. Hedge fund0.5%$63.4m1.49m−11%reduced
Arrowstreet Capital, Limited Partnership Hedge fund0.4%$994m23.29m+68%added
Game Creek Capital, LP Hedge fund0.4%$998k23,375–new
Qube Research & Technologies Ltd Hedge fund0.4%$382m8.94m+61%added
Quantbot Technologies LP Hedge fund0.4%$10.1m235,949+220%added
Walleye Capital LLC Hedge fund0.3%$67.4m1.58m+89%added
Armistice Capital, LLC Hedge fund0.3%$11.3m265,201–new
Trexquant Investment LP Hedge fund0.3%$49.9m1.17m+203%added
Schonfeld Strategic Advisors LLC Hedge fund0.3%$56.6m1.33m+20%added
AlphaGrep UK Ltd Hedge fund0.3%$978k22,906+96%added
Oak Thistle LLC Hedge fund0.3%$3.0m69,383+310%added
Dark Forest Capital Management LP Hedge fund0.3%$4.2m98,856+245%added
Landscape Capital Management, L.L.C. Hedge fund0.3%$4.2m97,691+124%added