Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in PI held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | FMR LLC | 4.6M | $653.5M | +6.6% | 14.933% | 0.03% |
| 2 | BlackRock, Inc. | 4.4M | $637.3M | +3.1% | 14.562% | 0.01% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.2M | $314.3M | +2.5% | 7.181% | 0.01% |
| 4 | STATE STREET CORP | 1.7M | $243.6M | +14.5% | 5.566% | 0.00% |
| 5 | Capital International Investors | 1.4M | $206.7M | +6.7% | 4.724% | 0.04% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 1.3M | $183.7M | +1.3% | 4.198% | 0.00% |
| 7 | Capital World Investors | 1.1M | $161.0M | +10.6% | 3.679% | 0.02% |
| 8 | MILLENNIUM MANAGEMENT LLC | 834K | $119.5M | +715.9% | 2.731% | 0.04% |
| 9 | AMERICAN CENTURY COMPANIES INC | 804K | $115.2M | -1.7% | 2.633% | 0.05% |
| 10 | SYLEBRA CAPITAL LLC | 776K | $111.1M | -31.5% | 2.540% | 11.77% |
| 11 | Chevy Chase Trust Holdings, LLC | 737K | $105.6M | +1.2% | 2.413% | 0.27% |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | 734K | $105.1M | +7.6% | 2.401% | 0.01% |
| 13 | RAFFA WEALTH MANAGEMENT, LLC | 3K | $104.8M | — | 0.011% | 0.00% |
| 14 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 669K | $95.9M | +57.1% | 2.191% | 0.04% |
| 15 | UBS Group AG | 557K | $79.7M | -15.7% | 1.821% | 0.01% |
| 16 | AMERIPRISE FINANCIAL INC | 531K | $76.0M | -38.1% | 1.738% | 0.02% |
| 17 | Point72 Asset Management, L.P. | 419K | $59.9M | +38.4% | 1.370% | 0.07% |
| 18 | Whale Rock Capital Management LLC | 405K | $58.0M | 0.0% | 1.326% | 0.47% |
| 19 | GOLDMAN SACHS GROUP INC | 389K | $55.7M | +41.5% | 1.272% | 0.00% |
| 20 | MORGAN STANLEY | 361K | $51.6M | +32.8% | 1.180% | 0.00% |
| 21 | Nuveen, LLC | 348K | $49.8M | +16.9% | 1.138% | 0.01% |
| 22 | Broad Bay Capital Management, LP | 329K | $47.1M | — | 1.076% | 4.40% |
| 23 | NORTHERN TRUST CORP | 320K | $45.8M | +8.3% | 1.048% | 0.01% |
| 24 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 297K | $42.5M | +15.8% | 0.971% | 0.13% |
| 25 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 278K | $39.8M | +5.6% | 0.908% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in PI — a direct measure of their conviction.
Filings activity in PI during Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new PI position in Q2 2026
Institutions that fully closed their PI position in Q2 2026
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 319 | +9.2% | 108.57% | +2.41 pp | $4.75B | +46% |
| Q1 2026 | 292 | 11% | 106.16% | 0.94 pp | $3.24B | 40% |
| Q4 2025 | 328 | +1.2% | 107.10% | +4.13 pp | $5.43B | 3.0% |
| Q3 2025 | 324 | +11% | 102.97% | 3.31 pp | $5.60B | +63% |
| Q2 2025 | 291 | +6.6% | 106.28% | 0.02 pp | $3.43B | +26% |
| Q1 2025 | 273 | 12% | 106.30% | 6.10 pp | $2.73B | 39% |
| Q4 2024 | 310 | 2.2% | 112.40% | +6.48 pp | $4.51B | 28% |
| Q3 2024 | 317 | — | 105.92% | — | $6.30B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying PI stock.
Based on Q2 2026 13F filings, institutional ownership of Impinj, Inc. stands at 108.6%, held across 319 reporting institutions.
FMR LLC is the largest reported institutional holder of PI, with approximately 4,562,799 shares worth $0.65B as of Q2 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of PI, including MILLENNIUM MANAGEMENT LLC, Point72 Asset Management, L.P..
Our composite Smart Money Score for PI is 73 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
60 institutions opened new positions in PI during Q2 2026, while 37 fully exited. 220 added to existing positions and 30 trimmed.
PI institutional ownership rose by 2.41 percentage points quarter-over-quarter, with a net change of +27 holders.
The top 10 institutions account for 57.8% of all reported 13F value in PI, and the top 25 account for 79.3%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Impinj, Inc. (PI) Institutional Ownership