Penumbra Inc PEN
CIK 0001321732 · CUSIP 70975L107
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | FMR LLC CIK 315066 · View history | $1.15B 5,896,396 shares | 0.07% | +121.47K(+2.10%)Added | SEC filing ↗ Nov 13, 2024 | ▾ |
| 02 | BlackRock, Inc. CIK 2012383 · View history | $790.67M 4,069,101 shares | 0.02% | — | SEC filing ↗ Nov 13, 2024 | ▾ |
| 03 | VANGUARD GROUP INC CIK 102909 · View history | $714.34M 3,676,305 shares | 0.01% | -19.75K(-0.50%)Reduced | SEC filing ↗ Nov 13, 2024 | ▾ |
| 04 | PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history | $385.76M 1,985,258 shares | 0.04% | -1.04M(-34.40%)Reduced | SEC filing ↗ Nov 14, 2024 | ▾ |
| 05 | Champlain Investment Partners, LLC CIK 1315478 · View history | $300.79M 1,547,972 shares | 1.82% | +264.12K(+20.60%)Added | SEC filing ↗ Nov 12, 2024 | ▾ |
| 06 | STATE STREET CORP CIK 93751 · View history | $240.30M 1,236,671 shares | 0.01% | +3.86K(+0.30%)Added | SEC filing ↗ Nov 14, 2024 | ▾ |
| 07 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC CIK 1644956 · View history | $190.68M 981,309 shares | 0.47% | +156.33K(+18.90%)Added | SEC filing ↗ Nov 8, 2024 | ▾ |
| 08 | RTW INVESTMENTS, LP CIK 1493215 · View history | $154.62M 795,750 shares | 2.24% | +53.65K(+7.20%)Added | SEC filing ↗ Nov 14, 2024 | ▾ |
| 09 | Clearbridge Investments, LLC CIK 1348883 · View history | $137.97M 710,052 shares | 0.11% | -63.61K(-8.20%)Reduced | SEC filing ↗ Nov 12, 2024 | ▾ |
| 10 | JANUS HENDERSON GROUP PLC CIK 1274173 · View history | $129.97M 668,873 shares | 0.07% | +375.68K(+128.10%)Added | SEC filing ↗ Nov 14, 2024 | ▾ |
| 11 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $127.42M 655,572 shares | 0.01% | +11.26K(+1.70%)Added | SEC filing ↗ Nov 12, 2024 | ▾ |
| 12 | CONGRESS ASSET MANAGEMENT CO /MA CIK 897378 · View history | $123.88M 637,554 shares | 0.84% | -6.38K(-1.00%)Reduced | SEC filing ↗ Oct 28, 2024 | ▾ |
| 13 | BAILLIE GIFFORD & CO CIK 1088875 · View history | $115.00M 591,846 shares | 0.09% | -23.02K(-3.70%)Reduced | SEC filing ↗ Nov 5, 2024 | ▾ |
| 14 | Capital World Investors CIK 1422849 · View history | $105.71M 544,012 shares | 0.02% | -981(-0.20%)Reduced | SEC filing ↗ Nov 13, 2024 | ▾ |
| 15 | T. Rowe Price Investment Management, Inc. CIK 1897612 · View history | $93.18M 479,555 shares | 0.06% | +113.11K(+30.90%)Added | SEC filing ↗ Nov 14, 2024 | ▾ |
| 16 | MORGAN STANLEY CIK 895421 · Amended · View history | $86.06M 442,898 shares | 0.01% | +102.84K(+30.20%)Added | SEC filing ↗ May 14, 2025 | ▾ |
| 17 | CITADEL ADVISORS LLC CIK 1423053 · View history | $80.06M 412,023 shares | 0.08% | +343.00K(+497.00%)Added | SEC filing ↗ Nov 14, 2024 | ▾ |
| 18 | JPMORGAN CHASE & CO CIK 19617 · Amended · View history | $74.64M 384,142 shares | 0.01% | +69.19K(+22.00%)Added | SEC filing ↗ Dec 26, 2024 | ▾ |
| 19 | Thrivent Financial for Lutherans CIK 314984 · View history | $71.56M 368,298 shares | 0.14% | +358.93K(+3,832.30%)Added | SEC filing ↗ Nov 7, 2024 | ▾ |
| 20 | BRAIDWELL LP CIK 1920938 · View history | $70.23M 361,428 shares | 1.99% | +148.83K(+70.00%)Added | SEC filing ↗ Nov 14, 2024 | ▾ |
Showing 20 / 335 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 335 reporting institutions.
This page includes 20 of 335 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 335 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"70975L107","quarter":"2024Q3","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.