Ticker · CUSIP 30226D106

EXTR

EXTREME NETWORKS INC

Technology·Communication Equipment

···Share

Holders (tracked)

Combined shares

5,540,186

Combined value

$92.24M

Last close

$17.99

Quarter

2025Q4

Price is +8.0% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$17.99+6.61 (+58.08%)H $22.85 · L $11.11 · Avg Vol 1.5M

Tracked holders · last 8 quarters

+2 vs previous quarter over the last 8.

SEC event timeline

18 events

Ken Griffin (Citadel Advisors) trimmed2026-02-17
−169,388 shares · 2025Q4
Position
D.E. Shaw & Co. added2026-02-17
+660,303 shares · 2025Q4
Position
Two Sigma Investments trimmed2026-02-17
−157,290 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+253,290 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+4,193 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+24,679 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+101,180 shares · 2025Q4
Position
Renaissance Technologies added2026-02-12
+79,733 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+347,104 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) exited2025-12-09
−204,522 shares · 2025Q3
Position
D.E. Shaw & Co. added2025-11-14
+193,553 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−588,428 shares · 2025Q3
Position
AQR Capital Management added2025-11-14
+37,770 shares · 2025Q3
Position
Two Sigma Investments added2025-11-14
+19,406 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+6,728 shares · 2025Q3
Position
Renaissance Technologies trimmed2025-11-13
−62,069 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−347,104 shares · 2025Q3
Position
Norges Bank (Norway SWF) trimmed2025-11-12
−497,900 shares · 2024Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for EXTR →

Follow-the-investor returns

If you'd copied each holder of EXTR…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Renaissance Technologies	2016Q1	$13.62	+32.1%	$28.2M
Paul Tudor Jones (Tudor Investment)	2016Q4	$15.06	+19.5%	$444K
Norges Bank (Norway SWF)	2017Q1	$16.39	+9.7%	$6.2M
Izzy Englander (Millennium Mgmt)	2016Q1	$16.41	+9.6%	$20.9M
Two Sigma Investments	2016Q2	$16.71	+7.7%	$9.0M
D.E. Shaw & Co.	2016Q1	$16.74	+7.5%	$25.8M
AQR Capital Management	2016Q1	$16.93	+6.3%	$3.0M
Ken Griffin (Citadel Advisors)	2016Q1	$18.75	-4.1%	$1.4M
Ken Griffin (Citadel Advisors)	2016Q1	$18.75	-4.1%	$1.4M
Ken Griffin (Citadel Advisors)	2016Q1	$18.75	-4.1%	$1.4M
T. Rowe Price	2016Q1	$22.73	-20.9%	$2.4M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions2

Norges Bank (Norway SWF)
+347,104
$5.8M
Paul Tudor Jones (Tudor Investment)
+24,679
$411K

Added to5

D.E. Shaw & Co.
+660,303
$11.0M
Izzy Englander (Millennium Mgmt)
+253,290
$4.2M
AQR Capital Management
+101,180
$1.7M
Renaissance Technologies
+79,733
$1.3M
T. Rowe Price
+4,193
$70

Trimmed2

Ken Griffin (Citadel Advisors)
−169,388
$2.8M
Two Sigma Investments
−157,290
$2.6M

Exited0

—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	12	21,107,812	$257.7M	—
2022Q2	9	20,327,524	$181.3M	-3
2022Q3	10	20,750,165	$271.2M	+1
2022Q4	12	22,328,002	$408.8M	+2
2023Q1	15	25,549,704	$488.5M	+3
2023Q2	13	28,965,636	$754.6M	-2
2023Q3	14	29,297,502	$709.3M	+1
2023Q4	13	28,958,249	$510.8M	-1
2024Q1	13	25,127,997	$290.0M	—
2024Q2	12	26,323,000	$354.0M	-1
2024Q3	11	5,708,849	$85.8M	-1
2024Q4	12	4,886,095	$81.8M	+1
2025Q1	10	4,599,766	$60.9M	-2
2025Q2	11	5,185,376	$93.1M	+1
2025Q3	9	4,370,782	$90.3M	-2
2025Q4	11	5,540,186	$92.2M	+2

Who owns EXTR

11 super-investors · 2025Q4

Tracked stake

5.54M

Combined value

$92M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New2Added5Trim4

#	Manager	Shares	Value	% of book	Last action
1	Renaissance Technologies	1.57M	$26M	0.0%	Added+79.7K
2	D.E. Shaw & Co.	1.43M	$24M	0.0%	Added+660.3K
3	Izzy Englander Millennium Mgmt	1.16M	$19M	0.0%	Added+253.3K
4	Two Sigma Investments	497.5K	$8M	0.0%	Trim−157.3K
5	Norges Bank Norway SWF	347.1K	$6M	0.0%	New+347.1K
6	AQR Capital Management	168.6K	$3M	0.0%	Added+101.2K
7	T. Rowe Price	135.6K	$2M	0.0%	Added+4.2K
8	Ken Griffin Citadel Advisors	80.4K	$1M	0.0%	Trim−169.4K
9	Ken Griffin Citadel Advisors	79.8K	$1M	0.0%	Trim−169.4K
10	Ken Griffin Citadel Advisors	45.1K	$751K	0.0%	Trim−169.4K
11	Paul Tudor Jones Tudor Investment	24.7K	$411K	0.0%	New+24.7K

Recent moves

20 transactions

ADDIzzy Englander (Millennium Mgmt)
+253,290 · 2025Q4
ADDD.E. Shaw & Co.
+660,303 · 2025Q4
ADDAQR Capital Management
+101,180 · 2025Q4
TRIMTwo Sigma Investments
−157,290 · 2025Q4
ADDT. Rowe Price
+4,193 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+24,679 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−169,388 · 2025Q4
ADDRenaissance Technologies
+79,733 · 2025Q4
NEWNorges Bank (Norway SWF)
+347,104 · 2025Q4
SOLDPaul Tudor Jones (Tudor Investment)
−204,522 · 2025Q3
ADDAQR Capital Management
+37,770 · 2025Q3
ADDTwo Sigma Investments
+19,406 · 2025Q3
ADDT. Rowe Price
+6,728 · 2025Q3
ADDD.E. Shaw & Co.
+193,553 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−588,428 · 2025Q3
TRIMRenaissance Technologies
−62,069 · 2025Q3
SOLDNorges Bank (Norway SWF)
−347,104 · 2025Q3
TRIMNorges Bank (Norway SWF)
−497,900 · 2024Q3
TRIMTwo Sigma Investments
−179,831 · 2025Q2
SOLDLee Ainslie (Maverick Capital)
−20,064 · 2025Q2

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