Who owns Impinj (PI)?
106 holders named in SEC filings declare between 82.8% and 110.8% of Impinj's shares outstanding, as of Sep 23, 2026. The largest are Fidelity (FMR) (14.9%), BlackRock (14.6%) and Vanguard (12.1%); the five largest hold 55.6% together. Another 208 institutions hold small positions worth 2.2%. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 12.8% and sold 10.4% of the shares, a net purchase of 2.4%; 56 opened a position, 112 added, 83 reduced and 36 sold out. Biggest buyers: Millennium (+732,108 shares) and Broad Bay Capital Management, LP (+328,700 shares). Biggest sellers: Alyeska Investment Group, L.P. (-734,787) and UBS (-516,769). Schedule 13D/G filings since Mar 31, 2026: STATE STREET CORPORATION crossed 5% (5.6%) on Jun 30, 2026. Directors and officers, from their latest Form 4: Daniel Patrick Gibson (3.4%) and Chris Diorio Ph.D. (1.8%). Over time, 304 managers declared Impinj in their 13F for Q2 2026, against 142 for Q4 2019: together at most 107.6% of the shares outstanding, against 82.1%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| Fidelity (FMR) | 13F | 14.9% | Jun 30, 2026 | Q4 2019 or earlier |
| BlackRock | 13F | 14.6% | Jun 30, 2026 | Q4 2019 or earlier |
| Vanguard | 13F | 12.1% | Jun 30, 2026 | Q4 2019 or earlier |
| Capital Group | 13F | 8.4% | Jun 30, 2026 | Q3 2023 |
| State Street | 13F | 5.6% | Jun 30, 2026 | Q4 2019 or earlier |
| Daniel Patrick Gibson | Form 4 | 3.4% | May 28, 2026 | — |
| Millennium | 13F | 2.7% | Jun 30, 2026 | Q4 2025 |
| American Century Companies, Inc. | 13F | 2.6% | Jun 30, 2026 | Q1 2024 |
| SYLEBRA CAPITAL LLC | 13F | 2.5% | Jun 30, 2026 | Q3 2023 |
| Chevy Chase Trust Holdings, LLC | 13F | 2.4% | Jun 30, 2026 | Q4 2019 or earlier |
| Geode Capital | 13F | 2.4% | Jun 30, 2026 | Q4 2019 or earlier |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 13F | 2.2% | Jun 30, 2026 | Q4 2019 or earlier |
| Chris Diorio Ph.D. | Form 4 | 1.8% | Sep 23, 2026 | — |
| T. Rowe Price | 13F | 1.8% | Jun 30, 2026 | Q4 2019 or earlier |
| Ameriprise Financial, Inc. | 13F | 1.7% | Jun 30, 2026 | Q4 2019 or earlier |
| UBS | 13F | 1.7% | Jun 30, 2026 | Q4 2019 or earlier |
| Point72 | 13F | 1.3% | Jun 30, 2026 | Q1 2026 |
| Whale Rock Capital Management LLC | 13F | 1.3% | Jun 30, 2026 | Q1 2025 |
| Goldman Sachs | 13F | 1.3% | Jun 30, 2026 | Q4 2019 or earlier |
| Morgan Stanley | 13F | 1.2% | Jun 30, 2026 | Q4 2019 or earlier |
| Nuveen | 13F | 1.1% | Jun 30, 2026 | Q4 2019 or earlier |
| Broad Bay Capital Management, LP | 13F | 1.1% | Jun 30, 2026 | Q2 2026 |
| Northern Trust | 13F | 1.0% | Jun 30, 2026 | Q4 2019 or earlier |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 13F | 0.97% | Jun 30, 2026 | Q3 2025 |
| Charles Schwab | 13F | 0.91% | Jun 30, 2026 | Q4 2019 or earlier |
Impinj institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2019 | 142 | 82.1% | $485.6M | 75.7% |
| Q4 2020 | 144 | 87.6% | $846.7M | 74.4% |
| Q4 2021 | 170 | 87.7% | $1.9B | 72.8% |
| Q4 2022 | 234 | 97.0% | $2.7B | 65.2% |
| Q4 2023 | 193 | 103.4% | $2.5B | 68.9% |
| Q4 2024 | 311 | 108.3% | $4.5B | 59.6% |
| Q4 2025 | 320 | 106.6% | $5.6B | 54.8% |
| Q2 2026 | 304 | 107.6% | $4.7B | 57.5% |
From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.