WhaleCreep

Which hedge funds own PEN? PENUMBRA INC, Q2 2026 13F holders

HealthcareMedical Devices

68 tracked hedge funds disclosed a position in PEN (PENUMBRA INC) in their Q2 2026 13F filings, worth $3.7bn in total. The largest holder by portfolio weight is Slotnik Capital, LLC at 11.7% of its book. 6 opened a new position this quarter: MQS Management LLC, Graham Capital Management, L.P., Catalyst Funds Management Pty Ltd, Weiss Asset Management LP. 14 exited: Ursa Fund Management, LLC, Sand Grove Capital Management LLP, Vazirani Asset Management LLC.

68
Holders
Tracked managers whose filing for the quarter reports a long equity position in the security.
6
New this quarter
Holders whose previous filing (at most two quarters earlier) did not report the security.
14
Exited this quarter
Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
$5.7m
Inflow, new holders
Combined value of the positions the new holders reported for the quarter.
$479m
Outflow, exits
Combined value the exiting managers reported for the security in their previous filing.
$3.7bn
Combined value
Sum of the holders' reported positions in the security.
5.5%
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

68 rows
Slotnik Capital, LLC Hedge fund11.7%$42.0m133,000+32%added
Birnam Oak Advisors, LP Hedge fund8.8%$54.1m171,277+78%added
HBK Investments L P Hedge fund6.7%$581m1.84m+12%added
Melqart Asset Management (UK) Ltd Hedge fund5.6%$58.6m185,734+127%added
P Schoenfeld Asset Management LP Hedge fund4.9%$8.3m26,200+327%added
Versor Investments LP Hedge fund4.3%$2.0m6,491+43%added
Alpine Associates Management Inc. Hedge fund3.7%$59.7m188,986+43%added
Quarry LP Hedge fund3.3%$20.6m65,227+66%added
ExodusPoint Capital Management, LP Hedge fund3.2%$344m1.09m+134%added
TIG Advisors, LLC Hedge fund3.1%$67.9m215,082+258%added
Whitebox Advisors LLC Hedge fund2.6%$160m506,881+14%added
AQR Arbitrage LLC Hedge fund2.5%$178m563,873+33%added
GABELLI & Co INVESTMENT ADVISERS, INC. Hedge fund2.4%$16.8m53,292+3.1%added
Kryger Capital LLC Hedge fund1.9%$33.9m107,207−30%reduced
Rock Springs Capital Management LP Hedge fund1.8%$36.5m115,750−3.9%reduced
Cannon Global Investment Management, LLC Hedge fund1.7%$568k1,800+13%added
PFM Health Sciences, LP Hedge fund1.7%$19.0m60,221−57%reduced
Kintayl Capital LP Hedge fund1.4%$2.9m9,251+225%added
Athos Capital Ltd Hedge fund1.3%$3.5m11,1600.0%held
Glazer Capital, LLC Hedge fund1.2%$49.9m158,127+67%added
Exome Asset Management LLC Hedge fund1.2%$2.0m6,3000.0%held
Greenland Capital Management LP Hedge fund1.2%$6.2m19,7500.0%held
Caxton Associates LLP Hedge fund1.1%$56.6m179,384−2.9%reduced
Fortress Investment Group LLC Hedge fund1.0%$5.4m17,141+17%added
Empyrean Capital Partners, LP Hedge fund0.9%$26.8m85,0000.0%held
Prelude Capital Management, LLC Hedge fund0.8%$11.5m36,381−24%reduced
NINE MASTS CAPITAL Ltd Hedge fund0.8%$7.3m23,264−2.0%reduced
Magnetar Financial LLC Hedge fund0.7%$80.8m255,841+1.8%added
Balyasny Asset Management L.P. Hedge fund0.6%$344m1.09m+43%added
Tudor Investment Corp ET AL Hedge fund0.5%$127m400,649−2.5%reduced
Machina Capital S.A.S. Hedge fund0.5%$3.3m10,423+441%added
Occudo Quantitative Strategies LP Hedge fund0.5%$8.8m27,868+141%added
Verition Fund Management LLC Hedge fund0.3%$44.9m142,309+109%added
Hudson Bay Capital Management LP Hedge fund0.3%$64.1m203,138−42%reduced
MQS Management LLC Hedge fund0.3%$211k667–new
Carlson Capital, L.P. Hedge fund0.2%$979k3,100+19%added
Sculptor Capital LP Hedge fund0.2%$18.0m57,0000.0%held
Centiva Capital, LP Hedge fund0.2%$4.7m15,000−0.2%held
Millennium Management LLC Hedge fund0.1%$221m700,611−36%reduced
Oak Thistle LLC Hedge fund0.1%$1.5m4,718−44%reduced
Lighthouse Investment Partners, LLC Hedge fund0.1%$4.6m14,619−38%reduced
Woodline Partners LP Hedge fund0.1%$46.1m145,844−40%reduced
Corient IA LP Hedge fund0.1%$139k4400.0%held
Arrowstreet Capital, Limited Partnership Hedge fund0.1%$264m834,903+109%added
AlphaGrep UK Ltd Hedge fund0.1%$365k1,156+26%added
Two Sigma Investments, LP Hedge fund0.1%$135m428,128+635%added
Holocene Advisors, LP Hedge fund0.09%$40.4m128,012+16%added
Squarepoint Ops LLC Hedge fund0.08%$43.7m138,413−6.4%reduced
SummitTX Capital, L.P. Hedge fund0.08%$3.1m9,861−65%reduced
Citadel Advisors LLC Hedge fund0.08%$142m448,763+121%added