IMPINJ INC (PI) Institutional Shareholders
IMPINJ INC (PI) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $3.23B in PI holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of PI tracked by InsiderSet, reporting ownership valued at approximately $443.00M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $652.89M, representing an estimated gain of +47.38% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 59% of the total disclosed PI value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Fmr Llc, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in IMPINJ INC (PI).
This page ranks the largest institutional PI shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
303
Total Reported Value
$3.23B
Largest Holder
Blackrock, Inc.
Largest Position
$443.00M
Insider Transactions (90d)
24
Latest Filing Quarter
Q2 2026
New Institutional Positions
57
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 4,313,504 | $442,996,860 | $652,891,965 | +$209,895,105 | +47.38% | |
| Fmr Llc | 0.02% | 4,280,553 | $439,612,783 | $647,904,502 | +$208,291,719 | +47.38% | |
| Vanguard Portfolio Management Llc | 0.01% | 2,140,158 | $219,794,227 | $323,934,315 | +$104,140,088 | +47.38% | |
| State Street Corp | 0.01% | 1,484,868 | $152,495,944 | $224,749,620 | +$72,253,676 | +47.38% | |
| Capital International Investors | 0.03% | 1,352,380 | $138,889,426 | $204,696,237 | +$65,806,811 | +47.38% | |
| Vanguard Capital Management Llc | 0.00% | 1,265,710 | $129,988,417 | $191,577,866 | +$61,589,449 | +47.38% | |
| Sylebra Capital Llc | 15.03% | 1,132,152 | $116,272,010 | $171,362,527 | +$55,090,517 | +47.38% | |
| Capital World Investors | 0.01% | 1,016,052 | $104,348,540 | $153,789,631 | +$49,441,091 | +47.38% | |
| Ameriprise Financial Inc | 0.02% | 858,281 | $88,145,712 | $129,909,412 | +$41,763,700 | +47.38% | |
| American Century Companies Inc | 0.04% | 817,992 | $84,008,028 | $123,811,269 | +$39,803,241 | +47.38% | |
| Alyeska Investment Group, L.P. | 0.21% | 734,787 | $75,462,625 | $111,217,360 | +$35,754,735 | +47.38% | |
| Chevy Chase Trust Holdings, Llc | 0.22% | 728,395 | $74,806,166 | $110,249,867 | +$35,443,701 | +47.38% | |
| Geode Capital Management, Llc | 0.00% | 681,968 | $70,050,876 | $103,222,676 | +$33,171,800 | +47.35% | |
| Ubs Group Ag | 0.01% | 518,074 | $53,206,200 | $78,415,681 | +$25,209,481 | +47.38% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.01% | 517,826 | $53,180,732 | $78,378,143 | +$25,197,411 | +47.38% | |
| Manufacturers Life Insurance Company, The | 0.04% | 425,945 | $43,744,552 | $64,471,035 | +$20,726,483 | +47.38% | |
| Whale Rock Capital Management Llc | 0.54% | 405,244 | $41,618,559 | $61,337,732 | +$19,719,173 | +47.38% | |
| Nuveen, Llc | 0.01% | 297,522 | $30,555,510 | $45,032,930 | +$14,477,420 | +47.38% | |
| Northern Trust Corp | 0.00% | 295,404 | $30,337,991 | $44,712,349 | +$14,374,358 | +47.38% | |
| Point72 Asset Management, L.P. | 0.05% | 289,131 | $29,693,754 | $43,762,868 | +$14,069,114 | +47.38% | |
| Goldman Sachs Group Inc | 0.00% | 274,720 | $28,213,773 | $41,581,619 | +$13,367,846 | +47.38% | |
| Morgan Stanley | 0.00% | 271,477 | $27,880,749 | $41,090,759 | +$13,210,010 | +47.38% | |
| Charles Schwab Investment Management Inc | 0.00% | 262,744 | $26,983,809 | $39,768,932 | +$12,785,123 | +47.38% | |
| William Blair Investment Management, Llc | 0.09% | 256,211 | $26,312,870 | $38,780,097 | +$12,467,227 | +47.38% | |
| Fred Alger Management, Llc | 0.10% | 215,016 | $22,082,143 | $32,544,822 | +$10,462,679 | +47.38% | |
| Aberdeen Group Plc | 0.03% | 153,502 | $21,986,091 | $23,234,063 | +$1,247,972 | +5.68% | |
| Awm Investment Company, Inc. | 2.35% | 207,018 | $21,260,749 | $31,334,244 | +$10,073,495 | +47.38% | |
| Fiera Capital Corp | 0.07% | 203,105 | $20,858,883 | $30,741,973 | +$9,883,090 | +47.38% | |
| Royce & Associates Lp | 0.20% | 198,971 | $20,434,322 | $30,116,251 | +$9,681,929 | +47.38% | |
| Vanguard Fiduciary Trust Co | 0.00% | 190,035 | $19,516,595 | $28,763,698 | +$9,247,103 | +47.38% | |
| Emerald Advisers, Llc | 0.59% | 181,615 | $18,651,861 | $27,489,246 | +$8,837,385 | +47.38% | |
| Allspring Global Investments Holdings, Llc | 0.03% | 181,978 | $18,550,837 | $27,544,190 | +$8,993,353 | +48.48% | |
| Rockefeller Capital Management L.P. | 0.03% | 177,799 | $18,259,957 | $26,911,657 | +$8,651,700 | +47.38% | |
| Baillie Gifford & Co | 0.02% | 174,115 | $17,881,611 | $26,354,046 | +$8,472,435 | +47.38% | |
| Voya Investment Management Llc | 0.02% | 171,213 | $17,583,576 | $25,914,800 | +$8,331,224 | +47.38% | |
| Alliancebernstein L.P. | 0.01% | 96,884 | $16,858,785 | $14,664,362 | -$2,194,423 | -13.02% | |
| Bnp Paribas Asset Management Holding S.A. | 0.02% | 161,002 | $16,534,905 | $24,369,263 | +$7,834,358 | +47.38% | |
| Bank Of New York Mellon Corp | 0.00% | 143,782 | $14,766,441 | $21,762,844 | +$6,996,403 | +47.38% | |
| Polar Asset Management Partners Inc. | 0.33% | 136,656 | $14,034,571 | $20,684,252 | +$6,649,681 | +47.38% | |
| Principal Financial Group Inc | 0.01% | 131,645 | $13,519,941 | $19,925,787 | +$6,405,846 | +47.38% | |
| Oberweis Asset Management Inc/ | 0.36% | 118,086 | $12,127,432 | $17,873,497 | +$5,746,065 | +47.38% | |
| Stephens Investment Management Group Llc | 0.13% | 82,897 | $11,873,337 | $12,547,290 | +$673,953 | +5.68% | |
| Emerald Mutual Fund Advisers Trust | 0.55% | 111,287 | $11,429,175 | $16,844,400 | +$5,415,225 | +47.38% | |
| Raymond James Financial Inc | 0.00% | 113,099 | $11,403,174 | $17,118,665 | +$5,715,491 | +50.12% | |
| Jennison Associates Llc | 0.01% | 108,882 | $11,182,183 | $16,480,380 | +$5,298,197 | +47.38% | |
| Bank Of America Corp | 0.00% | 108,086 | $11,100,432 | $16,359,897 | +$5,259,465 | +47.38% | |
| Wellington Management Group Llp | 0.00% | 105,398 | $10,824,374 | $15,953,041 | +$5,128,667 | +47.38% | |
| Millennium Management Llc | 0.01% | 102,268 | $10,502,924 | $15,479,284 | +$4,976,360 | +47.38% | |
| Peregrine Investment Management Inc | 4.33% | 71,010 | $10,170,762 | $10,748,074 | +$577,312 | +5.68% | |
| Public Sector Pension Investment Board | 0.03% | 96,475 | $9,907,983 | $14,602,456 | +$4,694,473 | +47.38% |
Frequently asked questions about PI
Who owns the most PI stock?
The largest holders of PI are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for IMPINJ INC (PI).
Is PI widely held by superinvestors?
Many widely followed stocks like PI appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly PI is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.