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Yorktown Management & Research Co Inc

Position in PEN — Penumbra Inc

CIK 1313559 Forest, VA

Position in PEN

as of Jun 30, 2026 · filed Jul 23, 2026
Position Value
$947,250
-$37,860 QoQ
Shares Held
3,000
0.0% QoQ
Ownership
0.008%
of shares outstanding
% of Portfolio
0.62%
of 13F equity value
Holder Rank
#239
of 446 holders
Holding Since
Mar 2020
24 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

Yorktown Management & Research Co Inc holds $3,185,336 across 7 Medical Devices names. PEN ranks #1 (29.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 PEN
Penumbra Inc
This page
3,000 $947,250

All Filings in PEN

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24 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $947,250 3,000
2026-03-31 $985,110 3,000
2025-12-31 $932,730 3,000
2025-09-30 $759,960 3,000
2025-06-30 $769,890 3,000
2025-03-31 $802,230 3,000
2024-12-31 $712,440 3,000
2024-09-30 $582,930 3,000
2024-06-30 $539,910 3,000
2024-03-31 $412,883 1,850
2023-12-31 $465,349 1,850
2023-09-30 $447,533 1,850
2023-06-30 $636,511 1,850
2023-03-31 $515,576 1,850
2022-12-31 $411,551 1,850
2022-09-30 $350,760 1,850
2021-12-31 $430,980 1,500
2021-09-30 $399,750 1,500
2021-06-30 $411,090 1,500
2021-03-31 $405,870 1,500
2020-12-31 $262,500 1,500
2020-09-30 $291,570 1,500
2020-06-30 $268,230 1,500
2020-03-31 $241,995 1,500