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Disclosery

EXTR EXTREME NETWORKS INC

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COM (common), issuer CIK 1078271

292 managers (301 13F filers) reported a position in EXTR shares at 2026-03-31, 127,039,503 shares in all. 41 filers opened a position and 51 filers sold out during the quarter.

Managers
292
13F filers
301
New
41
Added
128
Reduced
84
Sold out
51
Shares held by filers
127,039,503

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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
VANGUARD GROUP INCgroup of 7 filers holding20,497,590$309MnewTimeline
BlackRock, Inc.in group BlackRock, Inc.20,189,882$304M0.01%+732,22113F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP6,449,869$97.3M<0.01%+785,37613F-HRTimelineGroup
PARADIGM CAPITAL MANAGEMENT INC/NY5,234,900$78.9M3.02%+262,40013F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC3,325,152$50.2M<0.01%+110,62313F-HRTimelineGroup
FMR LLCin group FMR LLC3,323,960$50.1M<0.01%+323,37213F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …3,247,680$49M0.03%+230,61713F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC3,129,611$47.2M0.01%+358,37113F-HRTimelineGroup
Trigran Investments, Inc.2,847,370$42.9M10.27%+561,97913F-HRTimeline
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.2,786,671$42M0.12%-185,04713F-HRTimelineGroup
LOOMIS SAYLES & CO L Pin group LOOMIS SAYLES & CO L P2,715,683$41M0.06%+227,53513F-HRTimelineGroup
BARROW HANLEY MEWHINNEY & STRAUSS LLC2,651,815$40M0.13%-167,93713F-HRTimeline
SOUTHERNSUN ASSET MANAGEMENT, LLC2,297,933$34.7M5.02%+327,04713F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC2,076,080$31.3M0.05%+510,21513F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY1,794,497$27.1M<0.01%+8,28613F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.1,602,470$26.7M0.01%+196,11713F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC1,689,229$25.5M0.02%-2,369,89513F-HRTimeline
Nuveen, LLCin group TIAA1,576,509$23.8M0.01%-328,63813F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,494,722$22.5M<0.01%+18,01913F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,470,448$22.2M0.02%+37,54313F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,402,507$21.1M<0.01%+33,78213F-HRTimelineGroup
Shannon River Fund Management LLC1,313,061$19.8M3.78%-591,46713F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.1,054,376$15.9M0.03%+123,20413F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC999,520$15.1M0.02%+661,35213F-HRTimelineGroup
Impax Asset Management Group plcin group Impax Asset Management Group …965,178$14.6M0.1%+20,00013F-HRTimelineGroup
COOPER CREEK PARTNERS MANAGEMENT LLC838,178$12.6M0.61%013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC817,529$12.3M<0.01%-125,89013F-HR/ATimelineGroup
SEB Asset Management AB808,461$12.2M0.05%13F-HRTimeline
Franklin Resourcesgroup of 2 filers holding801,899$12.1M-165,917Timeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/757,072$11.4M<0.01%+320,74313F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp742,898$11.2M<0.01%-72,59313F-HRTimelineGroup
Public Sector Pension Investment Board726,373$11M0.03%+17,58013F-HRTimeline
Connor, Clark & Lunn Investment Managem…720,905$10.9M0.03%+88,46713F-HRTimeline
Trexquant Investment LP695,652$10.5M0.08%+164,08613F-HRTimeline
UBS Group AGgroup of 2 filers holding676,382$10.2M+208,535Timeline
GLENMEDE TRUST CO NAin group GLENMEDE TRUST CO NA671,676$10.1M0.05%new13F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.666,913$10.1M<0.01%-501,73813F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\659,173$9.94M<0.01%-137,72213F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC656,528$9.9M0.01%+17,18713F-HRTimelineGroup
Defiance ETFs, LLC610,673$9.21M0.13%+170,53213F-HRTimeline
Penserra Capital Management LLCin group Penserra Capital Management L…610,673$9.21M0.11%+170,53213F-HRTimelineGroup
LYELL WEALTH MANAGEMENT, LP582,345$8.78M0.65%013F-HRTimeline
OP Asset Management Ltd541,968$8.17M0.08%new13F-HR/ATimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC540,405$8.15M<0.01%-8,95713F-HRTimelineGroup
Engineers Gate Manager LP509,244$7.68M0.1%+144,42313F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC503,241$7.59M0.01%+423,42513F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS468,596$7.07M<0.01%-372,40813F-HRTimelineGroup
PANAGORA ASSET MANAGEMENT INC463,146$6.98M0.03%+335,30113F-HRTimeline
Polar Asset Management Partners Inc.461,629$6.96M0.17%new13F-HRTimeline
Mirador Capital Partners LP416,916$6.29M0.89%+6,24813F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD414,887$6.26M0.01%-84,87713F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth392,071$5.91M0.01%+3,52613F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP377,134$5.69M<0.01%-120,37113F-HRTimelineGroup
Amundiin group Amundi376,970$5.68M<0.01%+66,40013F-HRTimelineGroup
RHUMBLINE ADVISERS362,749$5.47M<0.01%+8,80113F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO360,866$5.44M0.01%+121,53513F-HRTimelineGroup
Circumference Group LLC355,100$5.35M12%+85,10013F-HRTimeline
First Eagle Investment Management, LLCin group First Eagle Investment Manage…349,540$5.27M0.01%new13F-HR/ATimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC340,362$5.13M0.01%-2,69213F-HRTimelineGroup
MACKENZIE FINANCIAL CORP331,279$5M0.01%+189,10013F-HRTimeline
ALGERT GLOBAL LLC327,803$4.94M0.07%-283,72113F-HR/ATimeline
TUDOR INVESTMENT CORP ET AL316,991$4.78M0.03%+292,31213F-HRTimeline
Hillsdale Investment Management Inc.308,660$4.65M0.13%+15,88013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc304,952$4.6M<0.01%-28,81913F-HRTimelineGroup
HRT FINANCIAL LP300,132$4.53M0.01%+207,07813F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO284,866$4.26M<0.01%-34,03713F-HR/ATimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC282,403$4.26M<0.01%+113,81913F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP281,985$4.25M<0.01%-127,17213F-HRTimelineGroup
Tidal Investments LLCin group Tidal Investments LLC264,971$4M0.01%+83,76013F-HRTimelineGroup
Man Group plcin group Man Group plc263,929$3.98M0.01%+135,37313F-HRTimelineGroup
Swiss National Bank263,400$3.97M<0.01%013F-HRTimeline
Capital Advantage, Inc.238,829$3.6M0.47%013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC231,361$3.49M<0.01%-131,52313F-HRTimelineGroup
BROOKTREE CAPITAL MANAGEMENT222,688$3.36M2.66%+60313F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA211,286$3.19M<0.01%-78,68313F-HRTimelineGroup
SIRIOS CAPITAL MANAGEMENT L P182,396$2.75M0.33%new13F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC181,110$2.73M0.03%-171,06713F-HRTimeline
Aurora Investment Counsel170,866$2.58M1.43%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…162,500$2.45M<0.01%+34,69613F-HRTimeline
IRONWOOD INVESTMENT MANAGEMENT LLC161,362$2.43M1.01%+58,04813F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC159,126$2.4M<0.01%-1,003,49813F-HRTimelineGroup
ESSEX INVESTMENT MANAGEMENT CO LLC158,032$2.38M0.38%+2,94513F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/154,351$2.33M<0.01%+18,74713F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC153,372$2.31M<0.01%+42,40013F-HRTimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…140,947$2.13M0.02%+102,64613F-HRTimelineGroup
Ballast Asset Management, LP139,668$2.11M0.94%+3,35013F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC136,838$2.06M<0.01%+12,90013F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD136,500$2.06M<0.01%+14,40013F-HRTimeline
D.A. DAVIDSON & CO.135,000$2.04M0.01%013F-HRTimeline
CenterBook Partners LP119,236$1.8M0.1%-307,15813F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS118,544$1.79M0.01%+67,71213F-HRTimeline
CITIGROUP INCin group CITIGROUP INC114,830$1.73M<0.01%+68,09613F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co109,219$1.65M<0.01%-5,26413F-HRTimelineGroup
State of Alaska, Department of Revenue104,105$1.57M0.02%-1,51413F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …101,364$1.53M0.02%+40,75013F-HRTimelineGroup
ExodusPoint Capital Management, LP96,622$1.46M0.01%new13F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…89,621$1.35M<0.01%-2,26113F-HRTimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC88,222$1.33M<0.01%+30,53613F-HRTimelineGroup
Penbrook Management LLC83,525$1.26M0.95%new13F-HRTimeline
State of Tennessee, Department of Treas…80,605$1.22M<0.01%+20,90013F-HRTimeline
ICON ADVISERS INC/CO80,000$1.21M0.28%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding78,653$1.19M+61,990Timeline
Magnetar Financial LLCin group Magnetar Financial LLC78,075$1.18M0.01%+54,27713F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP75,444$1.14M<0.01%-232,18613F-HRTimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…75,339$1.14M<0.01%-4,35513F-HRTimeline
Holocene Advisors, LP71,511$1.08M<0.01%new13F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…70,253$1.06M0.01%-1,92213F-HRTimelineGroup
Freestone Grove Partners LP68,007$1.03M0.01%+44,28713F-HRTimeline
CAPITAL FUND MANAGEMENT S.A.67,659$1.02M0.01%new13F-HRTimeline
Creative Planningin group Creative Planning65,840$993K<0.01%+21,44313F-HRTimelineGroup
Illinois Municipal Retirement Fund65,103$982K0.01%-3,67113F-HRTimeline
Smith Group Asset Management, LLC64,000$965K0.05%013F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC62,721$946K0.01%new13F-HR/ATimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…62,621$944K<0.01%+1,30813F-HRTimelineGroup
Aquatic Capital Management LLC62,601$944K0.03%+30,49213F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson61,373$926K<0.01%013F-HR/ATimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …60,230$908K<0.01%-1,53313F-HRTimelineGroup
Louisiana State Employees Retirement Sy…59,500$897K0.02%-1,80013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN59,384$896K<0.01%-94,90413F-HR/ATimelineGroup
STRS OHIO53,300$804K<0.01%-1,10013F-HRTimeline
Headlands Technologies LLC52,185$787K0.09%+1,20313F-HRTimeline
LPL Financial LLC49,943$753K<0.01%-1,49813F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…49,840$752K<0.01%+5,39713F-HRTimeline
Legato Capital Management LLC49,680$749K0.07%-72513F-HRTimeline
Villanova Investment Management Co LLC48,219$727K0.75%+7,23313F-HRTimeline
SkyView Investment Advisors, LLC48,198$727K0.1%+23113F-HRTimeline
Elo Mutual Pension Insurance Co47,490$716K0.01%+29,95913F-HRTimeline
NEEDHAM INVESTMENT MANAGEMENT LLCin group NEEDHAM INVESTMENT MANAGEMENT…45,000$679K0.03%013F-HRTimelineGroup
Kovack Advisors, Inc.43,255$657K0.04%+15,18513F-HRTimeline
Y-Intercept (Hong Kong) Ltd43,339$654K0.01%-142,29113F-HRTimeline
ALLSTATE CORPin group ALLSTATE CORP42,838$646K0.01%new13F-HRTimelineGroup
LANARK FINANCIAL, INC.41,914$632K0.05%+15,00213F-HRTimeline
Handelsbanken Fonder AB41,700$629K<0.01%013F-HRTimeline
Schonfeld Strategic Advisors LLC41,482$626K0.01%+13,51813F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND39,165$591K<0.01%-606,63913F-HRTimeline
Vinva Investment Management Ltd26,904$588K0.01%new13F-HRTimeline
AMALGAMATED BANK38,584$582K<0.01%+21513F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM36,729$554K<0.01%-26413F-HRTimeline
Counterpoint Mutual Funds LLC36,640$553K0.08%+17,90213F-HRTimeline
Police & Firemen's Retirement System of…36,502$550K<0.01%013F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…36,038$543K<0.01%013F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P35,611$537K0.01%new13F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC35,533$536K0.01%-60913F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…34,109$514K<0.01%-494,77813F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…33,204$501K<0.01%+10013F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…32,902$496K<0.01%013F-HRTimeline
Centurion Wealth Management LLC32,539$491K0.11%+3013F-HRTimeline
Dash Acquisitions Inc.26,432$483K0.1%013F-HRTimeline
Entropy Technologies, LP31,749$479K0.02%+2,73013F-HRTimeline
DIVERSIFIED TRUST CO31,528$475K0.01%+20,45913F-HRTimeline
Diametric Capital, LP31,109$469K0.12%+18,38313F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND30,733$463K0.01%+10013F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…30,609$462K<0.01%+29,81813F-HRTimelineGroup
SG Americas Securities, LLC30,423$459K<0.01%-78,11313F-HRTimeline
State of Wyoming29,942$452K0.05%+8,73113F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …29,788$449K<0.01%013F-HRTimelineGroup
KLP KAPITALFORVALTNING AS28,600$431K<0.01%013F-HRTimeline
NorthCrest Asset Manangement, LLC26,485$407K0.01%+27713F-HRTimeline
FOX RUN MANAGEMENT, L.L.C.27,105$406K0.07%-68,77913F-HRTimeline
CAPSTONE INVESTMENT ADVISORS, LLCin group CAPSTONE INVESTMENT ADVISORS,…26,693$403K<0.01%-21,38913F-HRTimelineGroup
HARBOR CAPITAL ADVISORS, INC.26,632$402K0.03%new13F-HRTimeline
Quantinno Capital Management LP26,218$395K<0.01%-2,23813F-HRTimeline
CHOREO, LLC25,823$389K<0.01%new13F-HRTimeline
ROYCE & ASSOCIATES LP25,606$386K<0.01%+13,70913F-HRTimeline
Verdence Capital Advisors LLC25,266$381K0.02%new13F-HRTimeline
Armor Investment Advisors, LLC25,145$379K0.14%013F-HRTimeline
Green Alpha Advisors, LLC24,977$377K0.37%-1,33313F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC24,844$375K<0.01%-4013F-HRTimelineGroup
OneDigital Investment Advisors LLC24,696$372K<0.01%-22513F-HRTimeline
Brooklyn Investment Group24,408$368K0.01%new13F-HRTimeline
HOWE & RUSLING INC24,105$364K0.02%+3,18213F-HRTimeline
Centiva Capital, LP22,510$339K0.02%new13F-HRTimeline
Investors Towarzystwo Funduszy Inwestyc…22,200$335K0.14%-11,50013F-HRTimeline
Lido Advisors, LLCin group Lido Advisors, LLC21,983$332K<0.01%+3,94513F-HRTimelineGroup
Central Pacific Bank - Trust Division21,389$323K0.04%013F-HRTimeline
ProShare Advisors LLC20,787$313K<0.01%-4,82213F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP20,830$312K<0.01%+1,16713F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…20,560$310K<0.01%+5713F-HRTimelineGroup
M&T Bank Corpin group M&T Bank Corp20,143$303K<0.01%-87113F-HR/ATimelineGroup
Bridgewater Associates, LP19,512$294K<0.01%new13F-HRTimeline
Maryland State Retirement & Pension Sys…19,436$293K0.01%013F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC19,168$289K0.02%+4,23913F-HRTimeline
Vestcor Inc19,034$287K0.01%-8,71913F-HRTimeline
Swiss Life Asset Management Ltdin group Swiss Life Asset Management L…18,068$272K<0.01%new13F-HRTimelineGroup
EntryPoint Capital, LLC17,942$271K0.08%new13F-HRTimeline
Pacer Advisors, Inc.17,898$270K<0.01%+3,87213F-HR/ATimeline
LOS ANGELES CAPITAL MANAGEMENT LLC17,760$268K<0.01%-42,67513F-HRTimeline
Simplicity Wealth,LLC17,254$260K0.01%new13F-HRTimeline
MIRABELLA FINANCIAL SERVICES LLP17,194$259K0.03%-37,51813F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC16,529$249K<0.01%-4,66013F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC15,950$241K<0.01%new13F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC15,941$240K<0.01%-7,80713F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.15,755$238K<0.01%-60,37213F-HRTimelineGroup
Gallacher Capital Management LLC15,656$236K0.09%new13F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…15,366$232K<0.01%+8313F-HRTimelineGroup
Byrne Asset Management LLC15,090$228K0.13%+72013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…14,169$214K<0.01%013F-HRTimeline
Regal Investment Advisors LLC14,000$211K0.01%013F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/13,785$208K<0.01%+1,98613F-HRTimelineGroup
First Bank & Trust12,885$194K0.03%+76113F-HRTimeline