# PENUMBRA INC COM

PENUMBRA INC COM is a security (CUSIP 70975L107) tracked across SEC portfolio filings. 485 institutional managers reported $10.2B on Form 13F as of 2026-06-30; 47 registered fund positions totaling $852.5M via N-PORT as of 2026-05-31.

## Summary

- Issuer: PENUMBRA INC
- Class: COM
- CUSIP: 70975L107
- Asset category: EC
- 13F holders: 485
- 13F value: $10.2B
- 13F period: 2026-06-30
- N-PORT fund positions: 47
- N-PORT value: $852.5M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 485 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $1.4B | 4,330,456 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $1.2B | 3,770,569 |
| [HBK INVESTMENTS L P](https://search.stillhousedata.com/firm/115079) | DALLAS, TX | $536.6M | 1,634,261 |
| STATE STREET CORP | BOSTON, MA | $389.4M | 1,185,811 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $376.4M | 1,098,136 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $261.3M | 795,448 |
| [Balyasny Asset Management L.P.](https://search.stillhousedata.com/firm/138111) | Chicago, IL | $250.2M | 762,096 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $236.6M | 720,575 |
| UBS Group AG | Zurich, V8 | $184.0M | 560,335 |
| FMR LLC | BOSTON, MA | $162.9M | 496,107 |
| [Champlain Investment Partners, LLC](https://search.stillhousedata.com/firm/132474) | BURLINGTON, VT | $161.4M | 491,382 |
| Capital World Investors | LOS ANGELES, CA | $148.0M | 450,815 |
| [WHITEBOX ADVISORS LLC](https://search.stillhousedata.com/firm/121995) | MINNEAPOLIS, MN | $146.1M | 445,001 |
| [AQR Arbitrage LLC](https://search.stillhousedata.com/firm/114626) | Greenwich, CT | $138.9M | 423,073 |
| CITIGROUP INC | NEW YORK, NY | $136.8M | 433,125 |

## Top fund holders (N-PORT)

_Showing 15 of 47 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| State Street SPDR S&P MidCap 400SM ETF Trust | SPDR S&P MIDCAP 400 ETF TRUST | $388.4M | 160.37% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $143.8M | 17.65% |
| [SMALLCAP World Fund Inc](https://search.stillhousedata.com/fund/S000009599) | SMALLCAP World Fund Inc | $135.5M | 16.72% |
| [THE ARBITRAGE FUND](https://search.stillhousedata.com/fund/S000006440) | ARBITRAGE FUNDS | $30.3M | 358.22% |
| [Calamos Market Neutral Income Fund](https://search.stillhousedata.com/fund/S000004062) | CALAMOS INVESTMENT TRUST/IL | $30.0M | 17.00% |
| [The Merger Fund](https://search.stillhousedata.com/fund/S000005158) | Merger Fund | $20.6M | 83.36% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $19.2M | 8.84% |
| [Columbia Mid Cap Index Fund](https://search.stillhousedata.com/fund/S000010826) | COLUMBIA FUNDS SERIES TRUST | $8.9M | 35.10% |
| [Large Cap Index Master Portfolio](https://search.stillhousedata.com/fund/S000033023) | Master Investment Portfolio | $7.5M | 2.07% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $6.9M | 1.17% |
| Liberty All-Star Growth Fund | LIBERTY ALL STAR GROWTH FUND INC. | $6.7M | 197.29% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $5.9M | 1.93% |
| [Franklin Alternative Strategies Fund](https://search.stillhousedata.com/fund/S000042023) | Franklin Alternative Strategies Funds | $5.7M | 96.49% |
| [NYLI Merger Arbitrage ETF](https://search.stillhousedata.com/fund/S000025931) | New York Life Investments ETF Trust | $5.2M | 208.44% |
| [BNY Mellon Midcap Index Fund, Inc.](https://search.stillhousedata.com/fund/S000000078) | BNY MELLON MIDCAP INDEX FUND, INC. | $5.2M | 37.15% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/70975L107.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.