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BLAIR WILLIAM & CO/IL

Position in PEN — Penumbra Inc

CIK 902367 CHICAGO, IL

Position in PEN

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$558,561
-$34,475 QoQ
Shares Held
1,769
-2.0% QoQ
Ownership
0.004%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#275
of 445 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 70% Shared 0% None 30%

Common Shares in PEN Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Jun 30, 2026

BLAIR WILLIAM & CO/IL holds $552,664,086 across 22 Medical Devices names. PEN ranks #15 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PEN

Export CSV
26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $558,561 1,769
2026-03-31 $593,036 1,806
2025-12-31 $2,583,662 8,310
2025-09-30 $2,053,918 8,108
2025-06-30 $2,711,039 10,564
2025-03-31 $1,744,048 6,522
2024-12-31 $888,175 3,740
2024-09-30 $1,725,472 8,880
2024-06-30 $3,177,550 17,656
2024-03-31 $3,721,303 16,674
2023-12-31 $3,374,912 13,417
2023-09-30 $2,249,279 9,298
2023-06-30 $3,192,188 9,278
2023-03-31 $2,866,605 10,286
2022-12-31 $2,834,807 12,743
2022-09-30 $2,318,997 12,231
2022-06-30 $1,342,325 10,780
2022-03-31 $2,472,973 11,133
2021-12-31 $3,466,515 12,065
2021-09-30 $2,689,518 10,092
2021-06-30 $2,707,438 9,879
2021-03-31 $2,697,953 9,971
2020-12-31 $2,167,725 12,387
2020-09-30 $2,193,772 11,286
2020-06-30 $2,017,626 11,283
2020-03-31 $1,833,192 11,363