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ADAGE CAPITAL PARTNERS GP, L.L.C.

Position in PEN — Penumbra Inc

CIK 1165408 Boston, MA

Position in PEN

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$55,799,340
+$11,469,390 QoQ
Shares Held
176,720
+30.9% QoQ
Ownership
0.449%
of shares outstanding
% of Portfolio
0.08%
of 13F equity value
Holder Rank
#42
of 446 holders
Holding Since
Mar 2020
19 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

ADAGE CAPITAL PARTNERS GP, L.L.C. holds $680,310,420 across 17 Medical Devices names. PEN ranks #6 (8.2% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 PEN
Penumbra Inc
This page
176,720 $55,799,340

All Filings in PEN

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19 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $55,799,340 176,720
2026-03-31 $44,329,950 135,000
2025-12-31 $46,636,500 150,000
2025-09-30 $34,904,962 137,790
2025-06-30 $28,100,215 109,497
2025-03-31 $26,741,000 100,000
2024-12-31 $23,865,552 100,495
2023-06-30 $25,804,500 75,000
2023-03-31 $13,934,500 50,000
2022-12-31 $33,369,000 150,000
2022-09-30 $37,920,000 200,000
2022-06-30 $31,130,000 250,000
2022-03-31 $31,098,200 140,000
2021-12-31 $56,170,485 195,498
2021-09-30 $53,300,000 200,000
2021-06-30 $46,590,200 170,000
2021-03-31 $37,204,750 137,500
2020-09-30 $18,466,100 95,000
2020-03-31 $16,133,000 100,000