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Disclosery

PI IMPINJ INC

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COM (common), issuer CIK 1114995

317 managers (323 13F filers) reported a position in PI shares at 2025-09-30, 31,597,652 shares in all. 76 filers opened a position and 47 filers sold out during the quarter.

Managers
317
13F filers
323
New
76
Added
84
Reduced
118
Sold out
47
Shares held by filers
31,597,652

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
FMR LLCin group FMR LLC4,338,545$784M0.04%+16,74413F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.4,098,352$741M0.01%+227,80613F-HRTimelineGroup
VANGUARD GROUP INCgroup of 2 filers holding3,382,437$611M-138,983Timeline
SYLEBRA CAPITAL LLC1,829,260$331M18.26%-300,00013F-HRTimeline
Capital International Investorsin group Capital International Investo…1,564,251$283M0.05%013F-HRTimelineGroup
Whale Rock Capital Management LLC1,224,585$221M2.61%+338,48713F-HRTimeline
Invesco Ltd.in group Invesco Ltd.1,209,292$219M0.03%+393,68513F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,152,101$208M0.01%-62,96413F-HRTimelineGroup
Capital World Investors754,346$136M0.02%013F-HRTimeline
UBS Group AGgroup of 2 filers holding710,010$128M-268,125Timeline
Chevy Chase Trust Holdings, LLCin group Chevy Chase Trust Holdings, L…691,294$125M0.34%-48,78713F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY680,702$123M0.01%-76,54413F-HR/ATimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/674,333$122M0.01%+227,78813F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC667,592$121M0.03%+25,90813F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC624,855$113M0.01%+27,98113F-HRTimelineGroup
Driehaus Capital Management LLC514,500$93M0.67%new13F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC380,593$68.8M0.04%+74,13713F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP306,780$55.5M0.01%+3,37713F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC267,842$48.4M0.01%+7,34813F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co256,158$46.3M0.01%+27,26513F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson250,489$45.3M0.02%-154,65313F-HRTimelineGroup
Nuveen, LLCin group TIAA248,909$45M0.01%-34,62913F-HRTimelineGroup
JENNISON ASSOCIATES LLC247,545$44.7M0.03%-1,44913F-HRTimeline
EMERALD ADVISERS, LLCgroup of 2 filers holding244,562$44.2M-7,374Timeline
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC200,605$36.3M0.09%new13F-HRTimeline
AWM Investment Company, Inc.178,173$32.2M3.02%013F-HRTimeline
AXA Investment Managers S.A.176,012$31.8M0.09%13F-HRTimeline
ROYCE & ASSOCIATES LP169,799$30.7M0.31%-59,40313F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …172,427$30.7M0.05%-91,62013F-HRTimelineGroup
T. Rowe Price Investment Management, In…163,491$29.6M0.02%new13F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp143,189$25.9M<0.01%+3,42813F-HRTimelineGroup
FRED ALGER MANAGEMENT, LLCin group FRED ALGER MANAGEMENT, LLC135,782$24.5M0.1%-155,13113F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding125,200$22.6M+7,892Timeline
OBERWEIS ASSET MANAGEMENT INC/107,120$19.4M0.74%new13F-HRTimeline
NEXT CENTURY GROWTH INVESTORS LLC104,641$18.9M1.38%new13F-HRTimeline
ALLIANCEBERNSTEIN L.P.103,242$18.7M0.01%+69,30613F-HRTimeline
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.102,755$18.6M0.06%new13F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC101,460$18.3M0.01%-86,57413F-HRTimelineGroup
Public Sector Pension Investment Board100,954$18.2M0.07%+20,94313F-HRTimeline
Toronado Partners, LLC100,795$18.2M12.08%-96,64613F-HRTimeline
Polar Capital Holdings Plcin group Polar Capital Holdings Plc94,963$17.2M0.08%+41913F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA92,902$16.8M<0.01%-20,07813F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…89,152$16.1M0.03%-53,04313F-HRTimelineGroup
Polar Asset Management Partners Inc.85,511$15.5M0.31%-30,13413F-HR/ATimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…85,394$15.4M<0.01%+70,92513F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\84,157$15.2M0.01%+2,42713F-HRTimelineGroup
Granite Investment Partners, LLC80,673$14.6M0.83%-28,80713F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC78,612$14.2M0.06%-46,63713F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO75,165$13.6M<0.01%-1,26713F-HR/ATimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/72,292$13.1M<0.01%-87,30013F-HR/ATimelineGroup
RHUMBLINE ADVISERS71,749$13M0.01%+2,54213F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc68,763$12.4M<0.01%+2,21713F-HRTimelineGroup
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…67,934$12.3M0.02%-9,41313F-HRTimelineGroup
ExodusPoint Capital Management, LP65,323$11.8M0.17%+15,23213F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC57,850$10.5M0.01%+55,68913F-HRTimelineGroup
RENAISSANCE GROUP LLC56,234$10.2M0.38%+4,77213F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD54,606$9.87M0.02%-7,09513F-HRTimeline
PEREGRINE INVESTMENT MANAGEMENT INC52,673$9.52M4.68%-6,21713F-HRTimeline
Swiss National Bank50,600$9.15M0.01%+1,50013F-HRTimeline
CREDIT AGRICOLE S Ain group CREDIT AGRICOLE S A49,232$8.9M0.03%13F-HRTimelineGroup
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …46,080$8.33M0.01%new13F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO45,851$8.29M0.01%-14,26713F-HRTimelineGroup
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …44,762$7.88M0.01%+1,78113F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…38,653$6.99M0.01%-5,62013F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC37,910$6.85M<0.01%-14,00113F-HR/ATimelineGroup
Lisanti Capital Growth, LLC37,351$6.75M1.65%+3,71613F-HRTimeline
Stephens Investment Management Group LLCin group Stephens Investment Managemen…35,747$6.46M0.08%-3713F-HRTimelineGroup
KBC Group NVin group KBC Group NV32,052$5.79M0.01%+31,25913F-HRTimelineGroup
Verition Fund Management LLC31,409$5.68M0.03%-4,70213F-HRTimeline
Hel Ved Capital Management Ltd30,050$5.43M2.95%new13F-HRTimeline
ALGERT GLOBAL LLC28,403$5.13M0.09%+1,09113F-HR/ATimeline
KENNEDY CAPITAL MANAGEMENT LLC28,022$5.06M0.11%-6,54913F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND26,659$4.82M0.01%+6,18113F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co26,779$4.8M0.01%+2,16013F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC25,905$4.68M0.01%+1,23813F-HRTimelineGroup
COOPER CREEK PARTNERS MANAGEMENT LLC25,905$4.68M0.18%013F-HRTimeline
GILDER GAGNON HOWE & CO LLC25,269$4.57M0.05%+5213F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…24,574$4.44M<0.01%-2,87013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN24,135$4.36M<0.01%-17513F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources23,469$4.24M<0.01%-65013F-HRTimelineGroup
IRONWOOD INVESTMENT MANAGEMENT LLC22,821$4.12M1.8%-23413F-HRTimeline
Aberdeen Group plcin group Aberdeen Group plc23,275$4.11M0.01%-2,10313F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC21,559$3.9M<0.01%new13F-HRTimelineGroup
K.J. Harrison & Partners Inc21,200$3.87M0.55%+5,00013F-HRTimeline
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP21,090$3.81M<0.01%new13F-HRTimelineGroup
Creative Planningin group Creative Planning21,008$3.8M<0.01%-1,29213F-HRTimelineGroup
Pachira Investments Inc.20,504$3.71M2.08%013F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC19,409$3.51M<0.01%-26,79913F-HRTimelineGroup
CAPITAL FUND MANAGEMENT S.A.18,719$3.38M0.03%-68,54613F-HRTimeline
Taylor Frigon Capital Management LLC17,967$3.25M1.61%-5,71313F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.17,229$3.11M<0.01%+3,78413F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…16,130$3.11M<0.01%+6613F-HRTimeline
TWINBEECH CAPITAL LP17,085$3.09M0.12%-7,38113F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…16,900$3.06M0.01%+11,40013F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC16,148$2.92M<0.01%-22713F-HRTimeline
Mitsubishi UFJ Asset Management Co., Lt…in group Mitsubishi UFJ Trust & Bankin…15,400$2.78M<0.01%new13F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…15,185$2.74M0.01%-31013F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC14,480$2.62M0.01%+7,51513F-HRTimeline
LPL Financial LLC14,339$2.59M<0.01%-2,83513F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …14,272$2.58M<0.01%-17013F-HRTimelineGroup
VAN ECK ASSOCIATES CORPin group VAN ECK ASSOCIATES CORP14,197$2.57M<0.01%+7,15513F-HRTimelineGroup
CAPTRUST FINANCIAL ADVISORS13,394$2.42M<0.01%-6113F-HRTimeline
Gallo Partners, LP13,382$2.42M1.82%new13F-HRTimeline
State of Alaska, Department of Revenue13,027$2.35M0.02%-94213F-HRTimeline
NATIXIS ADVISORS, LLCin group Natixis Investment Managers12,972$2.35M<0.01%new13F-HRTimelineGroup
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…12,645$2.29M0.01%-3,70313F-HRTimelineGroup
Louisiana State Employees Retirement Sy…11,900$2.15M0.04%+90013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC11,681$2.11M<0.01%-17,65613F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC11,338$2.05M0.02%-5,76913F-HRTimeline
Quantinno Capital Management LP11,331$2.05M0.01%+7,34013F-HRTimeline
State of Tennessee, Department of Treas…10,659$1.93M0.01%-3,30013F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC10,446$1.89M<0.01%-3,56413F-HRTimelineGroup
Generali Investments Towarzystwo Fundus…in group Generali Powszechne Towarzyst…10,000$1.81M0.96%-3,50013F-HRTimelineGroup
COMERICA BANK9,845$1.78M0.01%-81413F-HRTimeline
Cambridge Investment Research Advisors,…9,682$1.75M<0.01%+23813F-HRTimeline
KORNITZER CAPITAL MANAGEMENT INC /KS9,000$1.63M0.03%new13F-HRTimeline
Quantbot Technologies LP8,828$1.6M0.04%new13F-HRTimeline
Auxano Advisors, LLC8,653$1.56M0.33%-15813F-HRTimeline
HIGHBRIDGE CAPITAL MANAGEMENT LLC8,001$1.45M0.07%new13F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC7,982$1.44M0.02%-77013F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC7,905$1.43M<0.01%-2,13413F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM7,708$1.39M0.01%+24113F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…7,662$1.38M<0.01%-20813F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…7,628$1.38M<0.01%+58913F-HRTimeline
JAMISON PRIVATE WEALTH MANAGEMENT, INC.7,415$1.34M0.17%+1,43113F-HRTimeline
AMALGAMATED BANK7,408$1.34M0.01%+73813F-HRTimeline
Police & Firemen's Retirement System of…7,286$1.32M0.01%+1,37413F-HRTimeline
Engineers Gate Manager LP7,215$1.3M0.01%-15,62113F-HRTimeline
Mariner, LLCin group Mariner, LLC7,165$1.3M<0.01%new13F-HRTimelineGroup
Legato Capital Management LLC6,940$1.25M0.14%-1,70513F-HRTimeline
Weiss Asset Management LPin group Weiss Asset Management LP6,858$1.24M0.02%new13F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
LMR Partners LLPin group LMR Partners LLP6,858$1.24M0.02%new13F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…6,637$1.2M0.01%-43413F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…6,593$1.19M0.01%+56613F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS6,496$1.17M<0.01%-9,50213F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding6,451$1.17M-32,670Timeline
CWM, LLCin group CWM, LLC6,395$1.16M<0.01%-2013F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC6,440$1.13M<0.01%-4,37013F-HRTimelineGroup
Handelsbanken Fonder AB6,000$1.08M<0.01%013F-HRTimeline
Lido Advisors, LLCin group Lido Advisors, LLC5,992$1.08M<0.01%+2,85913F-HRTimelineGroup
OREGON PUBLIC EMPLOYEES RETIREMENT FUND5,863$1.06M0.01%+50013F-HRTimeline
TD Asset Management Inc5,850$1.06M<0.01%new13F-HRTimeline
Sculptor Capital LPin group Sculptor Capital LP5,715$1.03M0.01%new13F-HRTimelineGroup
WHITEBOX ADVISORS LLC5,715$1.03M0.02%new13F-HRTimeline
Davidson Kempner Capital Management LP5,715$1.03M0.01%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC5,573$1.01M0.01%-75313F-HRTimelineGroup
VIRGINIA RETIREMENT SYSTEMS ET Al5,500$994K0.01%-1,80013F-HRTimeline
KLP KAPITALFORVALTNING AS5,400$976K<0.01%013F-HRTimeline
Schonfeld Strategic Advisors LLC5,229$945K0.01%new13F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.5,142$929K<0.01%013F-HRTimelineGroup
NJ State Employees Deferred Compensatio…5,000$904K0.1%013F-HRTimeline
Aries Wealth Management5,000$904K0.21%013F-HRTimeline
ProShare Advisors LLC4,891$884K<0.01%-86113F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP4,775$863K<0.01%new13F-HRTimelineGroup
HighTower Advisors, LLC4,763$861K<0.01%-2113F-HRTimeline
Regal Investment Advisors LLC4,682$846K0.06%-19913F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP4,572$826K<0.01%-4,49313F-HRTimelineGroup
Ensign Peak Advisors, Inc4,523$818K<0.01%-3,35013F-HR/ATimeline
COLDSTREAM CAPITAL MANAGEMENT INC4,436$802K0.01%-3,11613F-HRTimeline
Bridgewater Associates, LP4,339$784K<0.01%new13F-HRTimeline
Cetera Investment Advisers4,329$782K<0.01%-3,51713F-HRTimeline
RFG Advisory, LLC4,173$754K0.02%new13F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP4,158$752K<0.01%-30,35013F-HRTimelineGroup
CIBC Bancorp USA Inc.group of 2 filers holding3,919$708K+2,069Timeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.3,692$688K<0.01%+22713F-HRTimelineGroup
CAXTON ASSOCIATES LLP3,733$675K0.02%new13F-HRTimeline
Maryland State Retirement & Pension Sys…3,722$673K0.01%-3,17713F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…3,712$671K<0.01%013F-HRTimelineGroup
Corient Private Wealth LPin group Corient Private Wealth LP3,700$669K<0.01%+113F-HRTimelineGroup
ADVISORY RESEARCH INC3,679$665K0.09%-3,44513F-HRTimeline
SFE Investment Counsel3,585$648K0.1%-1,21513F-HRTimeline
Garde Capital, Inc.3,550$642K0.03%013F-HRTimeline
SG Americas Securities, LLC3,406$616K<0.01%+1,80913F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS3,403$615K<0.01%-48613F-HRTimeline
Keebeck Wealth Management3,305$597K0.07%+19013F-HRTimeline
Semanteon Capital Management, LP3,170$573K0.72%new13F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC3,160$571K0.04%-7,99813F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…3,073$555K<0.01%+2,98213F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…2,948$533K<0.01%+97913F-HRTimelineGroup
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…2,900$524K0.01%-11613F-HRTimelineGroup
U.S. Capital Wealth Advisors, LLC2,900$524K0.01%-3,98513F-HRTimeline
EVENTIDE ASSET MANAGEMENT, LLC2,877$520K0.01%+1413F-HRTimeline
SHUFRO ROSE & CO LLC5,700$517K0.04%013F-HRTimeline
Verdence Capital Advisors LLC2,148$511K0.03%+10813F-HRTimeline
Counterpoint Mutual Funds LLC2,806$507K0.04%new13F-HRTimeline
KEYBANK NATIONAL ASSOCIATION/OHin group KEYBANK NATIONAL ASSOCIATION/…2,802$506K<0.01%+30813F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC2,802$506K0.01%new13F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…2,722$492K<0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\2,628$475K<0.01%+1,11213F-HRTimelineGroup
DARK FOREST CAPITAL MANAGEMENT LP2,577$466K0.02%+59813F-HR/ATimeline
Ameritas Investment Partners, Inc.group of 2 filers holding2,555$462K-482Timeline
Inspire Investing, LLCin group Inspire Investing, LLC2,549$461K0.04%-94413F-HRTimelineGroup
Bridgefront Capital, LLC2,533$458K0.13%new13F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV2,216$401K<0.01%+37813F-HRTimeline
Register Financial Advisors LLC2,200$398K0.16%013F-HRTimeline
Pacific Sage Partners, LLC2,199$397K0.07%-4813F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC2,154$389K<0.01%-18,61413F-HRTimelineGroup
Vident Advisory, LLCin group Vident Advisory, LLC2,111$382K<0.01%-5813F-HRTimelineGroup
STRS OHIO2,100$380K<0.01%+1,70013F-HRTimeline
Versant Capital Management, Inc2,091$378K0.05%013F-HRTimeline