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Disclosery

EXTR EXTREME NETWORKS INC

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COM (common), issuer CIK 1078271

306 managers (309 13F filers) reported a position in EXTR shares at 2025-12-31, 127,462,080 shares in all. 37 filers opened a position and 42 filers sold out during the quarter.

Managers
306
13F filers
309
New
37
Added
130
Reduced
95
Sold out
42
Shares held by filers
127,462,080

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, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, 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
BlackRock, Inc.in group BlackRock, Inc.19,457,661$324M0.01%+291,76913F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC19,112,223$318M<0.01%+349,19913F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP5,664,493$94.3M<0.01%+213,09413F-HRTimelineGroup
PARADIGM CAPITAL MANAGEMENT INC/NY4,972,500$82.8M3.48%+40,00013F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC4,059,124$67.6M0.04%-300,03513F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC3,214,529$53.5M<0.01%+7,21913F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …3,017,063$50.2M0.03%+358,67013F-HRTimelineGroup
FMR LLCin group FMR LLC3,000,588$50M<0.01%+1,650,44813F-HRTimelineGroup
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.2,971,718$49.5M0.14%+2,232,37313F-HRTimelineGroup
BARROW HANLEY MEWHINNEY & STRAUSS LLC2,819,752$46.9M0.16%-202,18213F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC2,771,240$46.1M0.01%+36,16313F-HR/ATimelineGroup
LOOMIS SAYLES & CO L Pin group LOOMIS SAYLES & CO L P2,488,148$41.4M0.05%+267,15013F-HRTimelineGroup
Trigran Investments, Inc.2,285,391$38.1M7.5%+92,99013F-HRTimeline
SOUTHERNSUN ASSET MANAGEMENT, LLC1,970,886$32.8M4.58%+629,48613F-HRTimeline
Nuveen, LLCin group TIAA1,905,147$31.7M0.01%-26,33213F-HRTimelineGroup
Shannon River Fund Management LLC1,904,528$31.7M4.97%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY1,786,211$29.7M<0.01%+193,38013F-HR/ATimelineGroup
RENAISSANCE TECHNOLOGIES LLC1,565,865$26.1M0.04%+79,73313F-HRTimeline
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC1,479,635$24.6M0.07%+132,72713F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,476,703$24.6M<0.01%+12,55513F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,432,905$23.9M0.02%+660,30313F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.1,406,353$23.4M0.01%+723,65813F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,368,725$22.8M<0.01%-60,45113F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.1,168,651$19.5M<0.01%+168,99813F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC1,162,624$19.4M0.01%+253,29013F-HRTimelineGroup
Jain Global LLC1,042,686$17.4M0.17%new13F-HRTimeline
Penn Capital Management Company, LLC981,278$16.4M1.31%+111,76113F-HRTimeline
Franklin Resourcesgroup of 2 filers holding967,816$16.1M+27,586Timeline
Impax Asset Management Group plcin group Impax Asset Management Group …945,178$15.7M0.1%+90,00013F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC943,419$15.7M<0.01%-66513F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.931,172$15.5M0.03%+260,57013F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS841,004$14M0.01%+338,69113F-HRTimelineGroup
COOPER CREEK PARTNERS MANAGEMENT LLC838,178$14M0.66%013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp815,491$13.6M<0.01%+10,27813F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\796,895$13.3M<0.01%-235,39413F-HRTimelineGroup
Public Sector Pension Investment Board708,793$11.8M0.04%-132,36713F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND645,804$10.8M0.01%+84,14413F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding639,341$10.6M+636Timeline
Connor, Clark & Lunn Investment Managem…632,438$10.5M0.03%-316,70113F-HRTimeline
ALGERT GLOBAL LLC611,524$10.2M0.16%-321,54313F-HR/ATimeline
LYELL WEALTH MANAGEMENT, LP582,345$9.7M0.7%+13,35413F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC549,362$9.15M<0.01%-25,09313F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding546,490$9.1M-397,419Timeline
Trexquant Investment LP531,566$8.85M0.08%-690,44413F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…528,887$8.81M0.01%+112,40413F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD499,764$8.32M0.02%+27,69813F-HRTimeline
UBS Group AGgroup of 2 filers holding467,847$7.79M-71,005Timeline
Defiance ETFs, LLC440,141$7.43M0.24%13F-HRTimeline
Penserra Capital Management LLCin group Penserra Capital Management L…440,141$7.33M0.09%-9,22513F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/436,329$7.26M<0.01%-22,58213F-HRTimelineGroup
CenterBook Partners LP426,394$7.1M0.35%+313,59513F-HRTimeline
Mirador Capital Partners LP410,668$6.84M0.94%+4,90213F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP409,157$6.81M0.01%+50,90913F-HRTimelineGroup
Skandinaviska Enskilda Banken AB (publ)390,800$6.51M0.03%+216,00013F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth388,545$6.47M0.01%+5,28413F-HRTimelineGroup
Abacus FCF Advisors LLC386,748$6.44M0.84%new13F-HRTimeline
Engineers Gate Manager LP364,821$6.07M0.07%+50,52113F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC362,884$6.04M<0.01%-28,23713F-HRTimelineGroup
RHUMBLINE ADVISERS353,948$5.89M<0.01%-23,41813F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC352,177$5.86M0.05%+94,96213F-HRTimeline
NORGES BANK347,104$5.78M<0.01%new13F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC343,054$5.71M0.01%+105,41313F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC338,168$5.62M0.01%+39,09713F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc333,771$5.56M<0.01%-17,32213F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO318,903$5.31M<0.01%-228,77213F-HRTimelineGroup
Qube Research & Technologies Ltd318,669$5.31M0.01%-640,77513F-HRTimeline
Amundiin group Amundi310,570$5.17M<0.01%+268,99913F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP307,630$5.12M<0.01%+22,79013F-HRTimelineGroup
Hillsdale Investment Management Inc.292,780$4.87M0.13%-39,80013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA289,969$4.83M<0.01%-37,57913F-HRTimelineGroup
Circumference Group LLC270,000$4.5M5.01%013F-HRTimeline
Swiss National Bank263,400$4.39M<0.01%+5,30013F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO239,331$3.98M<0.01%+101,15713F-HRTimelineGroup
Capital Advantage, Inc.238,829$3.98M0.54%+13,35413F-HRTimeline
South Street Advisors LLC233,696$3.89M0.55%-62,72013F-HRTimeline
BROOKTREE CAPITAL MANAGEMENT222,085$3.7M2.46%-3,12813F-HRTimeline
Y-Intercept (Hong Kong) Ltd185,630$3.09M0.07%+105,41613F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC181,211$3.02M0.01%+38,99213F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC168,584$2.81M<0.01%+101,18013F-HRTimelineGroup
ESSEX INVESTMENT MANAGEMENT CO LLC155,087$2.58M0.39%-3,73013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN154,288$2.57M<0.01%+39,96313F-HRTimelineGroup
MACKENZIE FINANCIAL CORP142,179$2.4M<0.01%+73,13713F-HRTimeline
Ballast Asset Management, LP136,318$2.27M1.07%-4,69013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/135,604$2.26M<0.01%+4,19313F-HRTimeline
D.A. DAVIDSON & CO.135,000$2.25M0.01%-1,00013F-HRTimeline
TWINBEECH CAPITAL LP130,107$2.17M0.15%+47,46113F-HRTimeline
Man Group plcin group Man Group plc128,556$2.14M<0.01%+46,54013F-HRTimelineGroup
PANAGORA ASSET MANAGEMENT INC127,845$2.13M0.01%+14,18413F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…127,804$2.13M<0.01%+5,73113F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC123,938$2.06M<0.01%-230,19513F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD122,100$2.03M<0.01%+6,50013F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co114,483$1.91M<0.01%-18,10913F-HRTimelineGroup
Calamos Advisors LLCin group Calamos Advisors LLC111,894$1.86M0.01%+15,06513F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC110,972$1.85M<0.01%-2,207,66213F-HRTimelineGroup
SG Americas Securities, LLC108,536$1.81M<0.01%+31,88513F-HRTimeline
State of Alaska, Department of Revenue105,619$1.76M0.02%+32,82413F-HRTimeline
IRONWOOD INVESTMENT MANAGEMENT LLC103,314$1.72M0.72%-14613F-HRTimeline
FOX RUN MANAGEMENT, L.L.C.95,884$1.6M0.25%-6,01613F-HRTimeline
HRT FINANCIAL LP93,054$1.55M<0.01%-373,91013F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…91,882$1.53M<0.01%-3,39313F-HRTimelineGroup
ICON ADVISERS INC/CO80,000$1.33M0.29%013F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC79,816$1.33M<0.01%-169,38813F-HRTimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…79,694$1.33M<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.76,127$1.27M<0.01%-19,16313F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…72,175$1.2M0.01%-4,44213F-HRTimelineGroup
Illinois Municipal Retirement Fund68,774$1.15M0.01%+2,06013F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC60,435$1.12M<0.01%+42,09013F-HRTimeline
Quantbot Technologies LP64,405$1.07M0.04%-50,22913F-HRTimeline
Smith Group Asset Management, LLC64,000$1.07M0.06%013F-HRTimeline
Integrated Quantitative Investments LLC63,940$1.06M0.23%+11,71313F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …61,763$1.03M<0.01%-2,95413F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson61,373$1.02M<0.01%013F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…61,313$1.02M<0.01%-2213F-HRTimelineGroup
Louisiana State Employees Retirement Sy…61,300$1.02M0.02%+60013F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …60,614$1.01M0.01%new13F-HRTimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC57,686$960K<0.01%+34,90313F-HRTimelineGroup
PICTON MAHONEY ASSET MANAGEMENT55,064$917K0.01%new13F-HRTimeline
MIRABELLA FINANCIAL SERVICES LLP54,712$911K0.09%new13F-HRTimeline
STRS OHIO54,400$906K<0.01%+7,20013F-HRTimeline
Campbell & CO Investment Adviser LLC52,594$876K0.04%new13F-HRTimeline
State of Tennessee, Department of Treas…59,705$870K<0.01%-11,89613F-HRTimeline
LPL Financial LLC51,441$856K<0.01%-14,32313F-HRTimeline
Headlands Technologies LLC50,982$849K0.07%-5,01913F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS50,832$846K<0.01%+2,38213F-HRTimeline
Legato Capital Management LLC50,405$839K0.07%-43,85513F-HRTimeline
CAPSTONE INVESTMENT ADVISORS, LLCin group CAPSTONE INVESTMENT ADVISORS,…48,082$801K0.01%+5,69213F-HRTimelineGroup
SkyView Investment Advisors, LLC47,967$799K0.1%-5113F-HRTimeline
CITIGROUP INCin group CITIGROUP INC46,734$778K<0.01%-22,97313F-HRTimelineGroup
NEEDHAM INVESTMENT MANAGEMENT LLCin group NEEDHAM INVESTMENT MANAGEMENT…45,000$749K0.05%+5,00013F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…44,443$740K<0.01%+4,70813F-HRTimeline
Creative Planningin group Creative Planning44,397$739K<0.01%+1,03313F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC42,538$708K0.01%-276,36213F-HRTimelineGroup
Handelsbanken Fonder AB41,700$694K<0.01%013F-HRTimeline
Villanova Investment Management Co LLC40,986$682K0.48%+16113F-HR/ATimeline
Round Rock Advisors LLC40,803$679K0.1%+19,88313F-HR/ATimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC40,418$673K<0.01%-686,36313F-HRTimelineGroup
AMALGAMATED BANK38,369$639K<0.01%+58513F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…38,301$638K0.01%-31,30613F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM36,993$616K<0.01%-2,41213F-HRTimeline
Police & Firemen's Retirement System of…36,502$608K0.01%013F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…36,038$600K<0.01%013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd34,914$581K0.02%+13,14813F-HRTimelineGroup
Investors Towarzystwo Funduszy Inwestyc…33,700$561K0.21%013F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…33,104$551K<0.01%-52913F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…32,902$548K<0.01%-4,66713F-HRTimeline
Edgestream Partners, L.P.32,748$545K0.02%-257,76613F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC36,142$543K0.01%-4,65213F-HRTimeline
Centurion Wealth Management LLC32,509$541K0.12%+10,30913F-HRTimeline
Aquatic Capital Management LLC32,109$535K0.02%-55,99513F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC31,778$529K0.01%+16,82713F-HRTimeline
PharVision Advisers, LLC31,012$516K0.26%+16,56713F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND30,633$510K0.01%+90013F-HRTimeline
COMERICA BANK30,099$501K<0.01%-7,70113F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …29,788$496K<0.01%+2,56313F-HRTimelineGroup
Entropy Technologies, LP29,019$483K0.03%+9,83013F-HRTimeline
KLP KAPITALFORVALTNING AS28,600$476K<0.01%+1,40013F-HRTimeline
AlphaQuest LLC28,595$476K0.03%+16,18213F-HRTimeline
Quantinno Capital Management LP28,456$474K<0.01%+10,48313F-HRTimeline
Kovack Advisors, Inc.28,070$467K0.02%+6,87513F-HR/ATimeline
Schonfeld Strategic Advisors LLC27,964$466K<0.01%-167,55213F-HRTimeline
Vestcor Inc27,753$462K0.01%+8,71913F-HRTimeline
Bridgefront Capital, LLC27,291$454K0.11%new13F-HRTimeline
LANARK FINANCIAL, INC.26,912$448K0.03%new13F-HRTimeline
Green Alpha Advisors, LLC26,310$438K0.4%+2,95813F-HRTimeline
NorthCrest Asset Manangement, LLC26,208$436K0.01%+10213F-HRTimeline
ProShare Advisors LLC25,609$426K<0.01%+73513F-HRTimeline
Armor Investment Advisors, LLC25,145$419K0.15%013F-HRTimeline
OneDigital Investment Advisors LLC24,921$415K<0.01%-26513F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC24,884$414K<0.01%-2,57213F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL24,679$411K<0.01%-42,53313F-HRTimeline
Dash Acquisitions Inc.26,432$396K0.08%+37813F-HRTimeline
Magnetar Financial LLCin group Magnetar Financial LLC23,798$396K<0.01%+13,19713F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC23,748$395K<0.01%new13F-HRTimelineGroup
Freestone Grove Partners LP23,720$395K<0.01%new13F-HRTimeline
Graham Capital Management, L.P.23,039$384K0.01%+2,03413F-HRTimeline
Employees Retirement System of Texas22,868$381K<0.01%013F-HRTimeline
Versor Investments LP21,602$360K0.06%-10,39813F-HRTimeline
Central Pacific Bank - Trust Division21,389$356K0.04%-11513F-HRTimeline
State of Wyoming21,211$353K0.04%+1,96213F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC21,189$353K<0.01%+6,65013F-HRTimelineGroup
M&T Bank Corpin group M&T Bank Corp21,014$350K<0.01%+8,98113F-HR/ATimelineGroup
HOWE & RUSLING INC20,923$348K0.02%+4,51813F-HRTimeline
Lido Advisors, LLCin group Lido Advisors, LLC18,038$344K<0.01%+44213F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…20,503$341K<0.01%013F-HRTimelineGroup
Vident Advisory, LLCin group Vident Advisory, LLC20,256$337K<0.01%+3,49113F-HRTimelineGroup
AXQ CAPITAL, LP19,665$327K0.07%new13F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP19,663$327K<0.01%+28413F-HR/ATimelineGroup
Maryland State Retirement & Pension Sys…19,436$324K0.01%+45013F-HRTimeline
Counterpoint Mutual Funds LLC18,738$312K0.02%-113,70113F-HRTimeline
INCEPTIONR LLC18,625$310K0.09%-8,28213F-HRTimeline
Bienville Capital Management, LLC18,600$310K0.05%013F-HRTimeline
Elo Mutual Pension Insurance Co17,531$292K<0.01%-17,37113F-HRTimeline
KEYBANK NATIONAL ASSOCIATION/OHin group KEYBANK NATIONAL ASSOCIATION/…17,068$284K<0.01%+11113F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…16,663$277K<0.01%+3,97513F-HRTimelineGroup
Larson Financial Group LLC16,504$275K0.01%+5,84113F-HRTimeline
IMC-Chicago, LLC15,523$258K<0.01%-2,44313F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…15,283$254K<0.01%+49013F-HRTimelineGroup
Gotham Asset Management, LLC15,060$251K<0.01%-50,03613F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC14,929$249K0.02%-1013F-HRTimeline
Byrne Asset Management LLC14,370$239K0.13%new13F-HRTimeline