Magnetar Financial’s Penumbra PEN Stock Holding History

Magnetar Financial’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	$80.8M	Buy	255,841 +4,408	+2%	+$1.43M	0.74%	10
2026 Q1	$82.6M	Buy	+251,433	New	+$85.1M	0.84%	5
2025 Q4	–	Sell	-5,163	Closed	-$1.31M	–	1158
2025 Q3	$1.31M	Sell	5,163 -26,473	-84%	-$6.68M	0.01%	426
2025 Q2	$8.12M	Buy	+31,636	New	+$8.61M	0.04%	174
2022 Q3	–	Sell	-41,116	Closed	-$5.12M	–	1471
2022 Q2	$5.12M	Buy	+41,116	New	+$6.52M	0.05%	303
2022 Q1	–	Sell	-2,085	Closed	-$599K	–	1481
2021 Q4	$599K	Buy	+2,085	New	+$551K	0.01%	928
2021 Q3	–	Sell	-1,027	Closed	-$281K	–	1476
2021 Q2	$281K	Buy	+1,027	New	+$280K	﹤0.01%	1042
2020 Q4	–	Sell	-3,609	Closed	-$702K	–	852
2020 Q3	$702K	Buy	+3,609	New	+$759K	0.01%	389
2020 Q1	–	Sell	-3,287	Closed	-$540K	–	595
2019 Q4	$540K	Buy	3,287 +1,658	+102%	+$264K	0.01%	300
2019 Q3	$219K	Buy	+1,629	New	+$252K	0.01%	432

Other funds holding PEN

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

HBK Investments Dallas, Texas $10.2B AUM 67.73% 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

Magnetar Financial's PEN Position: Q2 2026 in Review

Magnetar Financial increased its Penumbra (PEN) stake by 1.8% in Q2 2026, buying an estimated $1.43M and bringing the position to 255,841 shares worth $80.8M. The position accounts for 0.74% of the portfolio, ranked #10.

Magnetar Financial first reported a position in PEN in Q3 2019 and has held it in 10 quarters since. The position peaked at $82.6M in Q1 2026. 451 funds tracked by Wall St. Rank hold PEN as of Q2 2026.

Magnetar Financial held 255,841 shares of Penumbra worth $80.8M as of Q2 2026.
Magnetar Financial bought 4,408 Penumbra shares in Q2 2026, an estimated $1.43M.
Penumbra made up 0.74% of Magnetar Financial's portfolio in Q2 2026, its #10 holding.
Magnetar Financial first reported a position in Penumbra in Q3 2019 and has held it in 10 quarters since.
Magnetar Financial's Penumbra position peaked at $82.6M in Q1 2026.
451 funds tracked by Wall St. Rank held Penumbra as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.