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Magnetar Financial LLC

Position in PEN — Penumbra Inc

CIK 1352851 EVANSTON, IL

Position in PEN

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$80,781,795
-$1,781,258 QoQ
Shares Held
255,841
+1.8% QoQ
Ownership
0.650%
of shares outstanding
% of Portfolio
0.84%
of 13F equity value
Holder Rank
#30
of 446 holders
Holding Since
Sep 2020
8 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in PEN Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Jun 30, 2026

Magnetar Financial LLC holds $138,150,491 across 15 Medical Devices names. PEN ranks #1 (58.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 PEN
Penumbra Inc
This page
255,841 $80,781,795

All Filings in PEN

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8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $80,781,795 255,841
2026-03-31 $82,563,053 251,433
2025-09-30 $1,307,890 5,163
2025-06-30 $8,118,746 31,636
2022-06-30 $5,119,764 41,116
2021-12-31 $599,062 2,085
2021-06-30 $281,459 1,027
2020-09-30 $701,517 3,609