Stock Ownership/EXTR

EXTREME NETWORKS INC (EXTR): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in EXTR · Information Technology. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
21
13F filers
Aggregate Value
$347.3M
Across holders
Last Price
$22.38
2026-08-24
Sector
Information Technology
GICS
Quarterly fund activity11 increased10 reduced4 exited
Full exits: Schonfeld Strategic Advisors LLC, JUPITER ASSET MANAGEMENT LTD, Squarepoint Ops LLC, CAPSTONE INVESTMENT ADVISORS, LLC
Institutional Holders of EXTR
↗
21 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund3.36M$108.7M31.3%0.0%Added+$3.6MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund1.86M$60.3M17.4%0.1%Reduced$-6.9MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund1.03M$33.3M9.6%0.0%Added+$28.2MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund938K$30.4M8.7%0.0%Reduced$-31.9MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund813K$26.3M7.6%0.0%Added+$14.1MQ2 2026
First Eagle Investment Management, LLC
CIK 0001325447
Institutional Manager583K$18.9M5.4%0.0%Added$-3.7MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund535K$17.3M5.0%0.0%Added+$14.5MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund426K$13.8M4.0%0.0%Added+$13.6MQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund365K$11.8M3.4%0.0%Added$-10.4MQ2 2026
Clearbridge Investments, LLC
CIK 0001348883
Hedge Fund306K$9.9M2.9%0.0%Reduced$-6.6MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$108.7M· 31.3% of total· 0.0% port· 3.36M sh· +$3.6M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$60.3M· 17.4% of total· 0.1% port· 1.86M sh· $-6.9M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$33.3M· 9.6% of total· 0.0% port· 1.03M sh· +$28.2M QoQ· Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$30.4M· 8.7% of total· 0.0% port· 938K sh· $-31.9M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$26.3M· 7.6% of total· 0.0% port· 813K sh· +$14.1M QoQ· Q2 2026
First Eagle Investment Management, LLCAdded
Institutional Manager
$18.9M· 5.4% of total· 0.0% port· 583K sh· $-3.7M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$17.3M· 5.0% of total· 0.0% port· 535K sh· +$14.5M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$13.8M· 4.0% of total· 0.0% port· 426K sh· +$13.6M QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$11.8M· 3.4% of total· 0.0% port· 365K sh· $-10.4M QoQ· Q2 2026
Clearbridge Investments, LLCReduced
Hedge Fund
$9.9M· 2.9% of total· 0.0% port· 306K sh· $-6.6M QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALReduced
Hedge Fund
$7.7M· 2.2% of total· 0.0% port· 237K sh· $-2.6M QoQ· Q2 2026
Brevan Howard Capital Management LPReduced
Hedge Fund
$2.9M· 0.8% of total· 0.0% port· 91K sh· $-1.6M QoQ· Q2 2026
Bridgewater Associates, LPAdded
Hedge Fund
$1.8M· 0.5% of total· 0.0% port· 55K sh· +$1.2M QoQ· Q2 2026
CAXTON ASSOCIATES LLPAdded
Hedge Fund
$1.5M· 0.4% of total· 0.0% port· 47K sh· — QoQ· Q2 2026
Holocene Advisors, LPReduced
Hedge Fund
$505K· 0.1% of total· 0.0% port· 16K sh· $-1.8M QoQ· Q2 2026
Magnetar Financial LLCReduced
Hedge Fund
$504K· 0.1% of total· 0.0% port· 16K sh· $-1.5M QoQ· Q2 2026
MAVERICK CAPITAL LTDAdded
Hedge Fund
$466K· 0.1% of total· 0.0% port· 14K sh· — QoQ· Q2 2026
Walleye Capital LLCReduced
Hedge Fund
$342K· 0.1% of total· 0.0% port· 11K sh· +$187K QoQ· Q2 2026
Man Group plcReduced
Hedge Fund
$326K· 0.1% of total· 0.0% port· 10K sh· +$88K QoQ· Q2 2026
Gotham Asset Management, LLCReduced
Hedge Fund
$309K· 0.1% of total· 0.0% port· 10K sh· $-57K QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$255K· 0.1% of total· 0.0% port· 8K sh· +$215K QoQ· Q2 2026
1–10 of 21
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