Who owns Impinj, Inc. (PI)
Which tracked institutional funds hold PI, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See PI company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on PI is one-sided between 2025-Q4 and 2026-Q1: 39 added or opened and 155 trimmed or exited — on balance reducing.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
PI’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes PI more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in PI divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 290 tracked filers holding PI, 167 increased or opened the position and 173 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in PI between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 18
- VANGUARD PORTFOLIO MANAGEMENT LLC$220M
- VANGUARD CAPITAL MANAGEMENT LLC$130M
- Alyeska Investment Group, L.P.$75M
- Fiera Capital Corp$21M
- VANGUARD FIDUCIARY TRUST CO$20M
- Man Group plc$7M
Full exits 24
- VANGUARD GROUP INC$596M
- Driehaus Capital Management LLC$128M
- Aperture Investors, LLC$20M
- CREDIT AGRICOLE S A$12M
- RENAISSANCE GROUP LLC$9M
- TUDOR INVESTMENT CORP ET AL$7M
Largest adds
- MANUFACTURERS LIFE INSURANCE COMPANY, THE$41M
- Point72 Asset Management, L.P.$29M
- T. Rowe Price Investment Management, Inc.$29M
- VOYA INVESTMENT MANAGEMENT LLC$16M
- FRED ALGER MANAGEMENT, LLC$13M
- MILLENNIUM MANAGEMENT LLC$10M
Largest trims
- BlackRock, Inc.$440M
- FMR LLC$344M
- Invesco Ltd.$216M
- Capital International Investors$133M
- Whale Rock Capital Management LLC$113M
- PRICE T ROWE ASSOCIATES INC /MD/$89M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC trimmed | 4,279,783 | $440M | 11.1% | 2026-Q1 |
| BlackRock, Inc. trimmed | 2,949,125 | $303M | 7.7% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 2,140,158 | $220M | 5.6% | 2026-Q1 |
| STATE STREET CORP added | 1,484,868 | $152M | 3.9% | 2026-Q1 |
| Capital International Investors trimmed | 1,352,380 | $139M | 3.5% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,265,710 | $130M | 3.3% | 2026-Q1 |
| SYLEBRA CAPITAL LLC | 1,132,152 | $116M | 2.9% | 2026-Q1 |
| Capital World Investors added | 1,016,052 | $104M | 2.6% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 858,281 | $88M | 2.2% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 817,992 | $84M | 2.1% | 2026-Q1 |
| Alyeska Investment Group, L.P. added | 734,787 | $75M | 1.9% | 2026-Q1 |
| Chevy Chase Trust Holdings, LLC added | 728,395 | $75M | 1.9% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 681,968 | $70M | 1.8% | 2026-Q1 |
| UBS Group AG added | 518,074 | $53M | 1.3% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 517,826 | $53M | 1.3% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 425,945 | $44M | 1.1% | 2026-Q1 |
| Whale Rock Capital Management LLC trimmed | 405,244 | $42M | 1.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 305,729 | $31M | 0.8% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 300,080 | $31M | 0.8% | 2026-Q1 |
| Nuveen, LLC added | 297,522 | $31M | 0.8% | 2026-Q1 |
| NORTHERN TRUST CORP added | 295,404 | $30M | 0.8% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 289,131 | $30M | 0.8% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 274,720 | $28M | 0.7% | 2026-Q1 |
| MORGAN STANLEY trimmed | 271,477 | $28M | 0.7% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 262,744 | $27M | 0.7% | 2026-Q1 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC added | 256,211 | $26M | 0.7% | 2026-Q1 |
| NORGES BANK trimmed | 267,439 | $24M | 0.6% | 2026-Q1 |
| FRED ALGER MANAGEMENT, LLC added | 215,016 | $22M | 0.6% | 2026-Q1 |
| AWM Investment Company, Inc. added | 207,018 | $21M | 0.5% | 2026-Q1 |
| Fiera Capital Corp new | 203,105 | $21M | 0.5% | 2026-Q1 |
| ROYCE & ASSOCIATES LP added | 198,971 | $20M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 190,035 | $20M | 0.5% | 2026-Q1 |
| EMERALD ADVISERS, LLC added | 181,615 | $19M | 0.5% | 2026-Q1 |
| Allspring Global Investments Holdings, LLC added | 181,978 | $19M | 0.5% | 2026-Q1 |
| Rockefeller Capital Management L.P. added | 177,799 | $18M | 0.5% | 2026-Q1 |
| BAILLIE GIFFORD & CO added | 174,115 | $18M | 0.5% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC added | 171,213 | $18M | 0.4% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 96,884 | $17M | 0.4% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 161,002 | $17M | 0.4% | 2026-Q1 |
| Aberdeen Group plc added | 155,741 | $16M | 0.4% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 143,782 | $15M | 0.4% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 145,089 | $14M | 0.4% | 2026-Q1 |
| Polar Asset Management Partners Inc. added | 136,656 | $14M | 0.4% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 131,645 | $14M | 0.3% | 2026-Q1 |
| OBERWEIS ASSET MANAGEMENT INC/ added | 118,086 | $12M | 0.3% | 2026-Q1 |
| EMERALD MUTUAL FUND ADVISERS TRUST added | 111,287 | $11M | 0.3% | 2026-Q1 |
| JENNISON ASSOCIATES LLC trimmed | 108,882 | $11M | 0.3% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 108,086 | $11M | 0.3% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 102,268 | $11M | 0.3% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 104,936 | $10M | 0.3% | 2026-Q1 |
| Public Sector Pension Investment Board added | 96,475 | $10M | 0.3% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 96,244 | $10M | 0.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 95,543 | $10M | 0.2% | 2026-Q1 |
| Tidal Investments LLC added | 95,205 | $10M | 0.2% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 89,027 | $9M | 0.2% | 2026-Q1 |
| Invesco Ltd. trimmed | 82,904 | $9M | 0.2% | 2026-Q1 |
| Stephens Investment Management Group LLC added | 79,531 | $8M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 72,424 | $7M | 0.2% | 2026-Q1 |
| PEREGRINE INVESTMENT MANAGEMENT INC added | 70,492 | $7M | 0.2% | 2026-Q1 |
| Toronado Partners, LLC added | 70,207 | $7M | 0.2% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC trimmed | 70,181 | $7M | 0.2% | 2026-Q1 |
| Man Group plc added | 66,531 | $7M | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 61,764 | $6M | 0.2% | 2026-Q1 |
| MARSHALL WACE, LLP trimmed | 60,861 | $6M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 56,500 | $6M | 0.1% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 56,223 | $6M | 0.1% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 53,929 | $6M | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 51,152 | $5M | 0.1% | 2026-Q1 |
| Granite Investment Partners, LLC trimmed | 47,639 | $5M | 0.1% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 47,275 | $5M | 0.1% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 46,977 | $5M | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO trimmed | 46,489 | $5M | 0.1% | 2026-Q1 |
| Cinctive Capital Management LP added | 43,236 | $4M | 0.1% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 41,883 | $4M | 0.1% | 2026-Q1 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC added | 40,080 | $4M | 0.1% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 37,370 | $4M | 0.1% | 2026-Q1 |
| Z3 Capital Partners, LLC added | 36,328 | $4M | 0.1% | 2026-Q1 |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 37,583 | $4M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 33,902 | $3M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC added | 3,424,965 | $596M | 15.1% | 2025-Q4 stale |
| Driehaus Capital Management LLC added | 737,474 | $128M | 3.2% | 2025-Q4 stale |
| MACQUARIE GROUP LTD trimmed | 459,450 | $42M | 1.1% | 2025-Q1 stale |
| AXA Investment Managers S.A. new | 176,012 | $32M | 0.8% | 2025-Q3 stale |
| Aperture Investors, LLC new | 117,118 | $20M | 0.5% | 2025-Q4 stale |
| AXA S.A. trimmed | 125,842 | $14M | 0.4% | 2025-Q2 stale |
| CREDIT AGRICOLE S A added | 70,228 | $12M | 0.3% | 2025-Q4 stale |
| Duquesne Family Office LLC new | 108,475 | $10M | 0.2% | 2025-Q1 stale |
| RENAISSANCE GROUP LLC trimmed | 52,756 | $9M | 0.2% | 2025-Q4 stale |
| WASATCH ADVISORS LP added | 78,462 | $9M | 0.2% | 2025-Q2 stale |
| TUDOR INVESTMENT CORP ET AL added | 42,663 | $7M | 0.2% | 2025-Q4 stale |
| CASTLEARK MANAGEMENT LLC added | 40,540 | $7M | 0.2% | 2025-Q4 stale |
| Verition Fund Management LLC added | 32,270 | $6M | 0.1% | 2025-Q4 stale |
| Hel Ved Capital Management Ltd added | 31,825 | $6M | 0.1% | 2025-Q4 stale |
| SORA INVESTORS LLC trimmed | 60,058 | $5M | 0.1% | 2025-Q1 stale |
| Ion Asset Management Ltd. added | 59,200 | $5M | 0.1% | 2025-Q1 stale |
| PANAGORA ASSET MANAGEMENT INC trimmed | 56,146 | $5M | 0.1% | 2025-Q1 stale |
| Lisanti Capital Growth, LLC trimmed | 27,406 | $5M | 0.1% | 2025-Q4 stale |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 22,800 | $4M | 0.1% | 2025-Q4 stale |
| ALGERT GLOBAL LLC trimmed | 22,672 | $4M | 0.1% | 2025-Q4 stale |
| JANE STREET GROUP, LLC trimmed | 21,559 | $4M | 0.1% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.