Across its top 20 institutional holders, PEN's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 7/100, avg. turnover score 36/100).

Quarterly Activity

Recent Activity

+$62.6B

Total Buy Value

$6.8B

Total Sell Value

New buy119

Trim140

Add152

Sold out80

271

Net Buyers

220

Net Sellers

Smart Money Convergence

PEN does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.

13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.

Insider Trading (Form 4)

Form 144 Pre-Sale Notices

No Form 144 planned sale filings in the last 90 days

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

No Form 8-K filings for this ticker

CUSIP

70975L107

FAQ

Who are the top institutional investors holding PENUMBRA INC (PEN)?

Major stakeholders currently include BlackRock, Inc. ($1.4B), Vanguard Capital Management LLC ($556.4M), Vanguard Portfolio Management LLC ($543.3M). Based on the latest 13F filings, there are a total of 480 tracked investment funds and institutions maintaining positions in PEN.

What is the overall institutional sentiment toward PEN recently?

Institutional sentiment appears Bearish (Net Selling). During the most recent reporting quarter, the stock experienced a net outflow of $229.4M, driven by 271 managers accumulating shares while 220 reduced their exposure.

Which institutions have been selling or reducing their PEN positions?

In the latest period, 140 funds trimmed their holdings, and 80 managers completely exited their positions. The aggregate reported sell value was $6.8B.

Are there any notable investors adding PEN to their portfolios?

Yes, buying activity remains notable. 119 institutions opened new positions in {ticker}, and 152 existing holders added to their shares. The total reported buy value for the quarter amounted to $62.6B.