HBK Investments’s Penumbra PEN Stock Holding History

HBK Investments’s Portfolio PEN Stock Details PEN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$581M	Buy	1,838,508 +204,247	+12%	+$66.2M	5.67%	3
2026 Q1	$537M	Buy	+1,634,261	New	+$553M	5.45%	4
2019 Q2	–	Sell	-3,800	Closed	-$559K	–	933
2019 Q1	$559K	Sell	3,800 -4,583	-55%	-$655K	0.01%	803
2018 Q4	$1.02M	Sell	8,383 -34,625	-81%	-$4.64M	0.01%	681
2018 Q3	$6.44M	Buy	43,008 +15,308	+55%	+$2.14M	0.05%	232
2018 Q2	$3.83M	Buy	+27,700	New	+$3.94M	0.03%	325

Other funds holding PEN

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

ECM

ExodusPoint Capital Management New York $15.5B AUM 38.81% 1-Year Est. Return

Balyasny Asset Management Chicago, Illinois $80.2B AUM 51.53% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

HBK Investments's PEN Position: Q2 2026 in Review

HBK Investments increased its Penumbra (PEN) stake by 12% in Q2 2026, buying an estimated $66.2M and bringing the position to 1,838,508 shares worth $581M. The position accounts for 5.67% of the portfolio, ranked #3.

HBK Investments first reported a position in PEN in Q2 2018 and has held it in 6 quarters since. 449 funds tracked by Wall St. Rank hold PEN as of Q2 2026.

HBK Investments held 1,838,508 shares of Penumbra worth $581M as of Q2 2026.
HBK Investments bought 204,247 Penumbra shares in Q2 2026, an estimated $66.2M.
Penumbra made up 5.67% of HBK Investments's portfolio in Q2 2026, its #3 holding.
HBK Investments first reported a position in Penumbra in Q2 2018 and has held it in 6 quarters since.
449 funds tracked by Wall St. Rank held Penumbra as of Q2 2026.

Based on HBK Investments's 13F filing for Q2 2026, filed 14 Aug 2026.