Whale Analyzer
Top public holders · 13F and disclosure aggregation

Who owns PEN? 13F holders and whale ownership

PEN is tracked across public portfolios in Whale Analyzer. This page answers who owns PEN, which top funds are buying PEN, aggregate disclosed value, and recent position changes based on public data.

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3Tracked holders
$386.1MAggregate reported value
2026-05-19Page updated
2 new, 1 reducedRecent changes

Top holders

InvestorReported valueSharesChange
Baillie Gifford 13F portfolio
Baillie Gifford & Co holdings
$276.0M840.4KReduced
George Soros 13F portfolio
Soros Fund Management holdings
$66.8M203.4KNew
Alpine Associates 13F portfolio
Alpine Associates Management holdings
$43.3M131.9KNew

How to read this page

Values are reported public positions from tracked investors and institutions. They are not real-time ownership totals for the company.

This page is generated from public filings and public disclosures. It is for research and education only and is not investment advice.

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Frequently asked questions

Who owns PEN stock?

Whale Analyzer tracks 3 public institutional holders of PEN with a combined reported value of $386.1M. See the holder table above for the largest tracked positions.

Which top funds are buying PEN?

Check the "Change" column in the holders table above. "New" means a fresh position was initiated, "Added" means an existing position was increased, and "Reduced" or "Sold" indicates trimming.

What does 13F ownership mean for PEN?

Use the interactive PEN dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.