EXTR US Equity

EXTREME NETWORKS INC

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Information Technology · Computer Communications Equipment · CIK 1078271 · FYE 0630

$29.99

+0.04 (+0.13%)

USD · as of 2026-07-28 · marketstack

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Institutional ownership· 13F filers holding EXTR · 2026-Q1 methodology → sources →

300 holders

% of shares outstanding held

97.1%

Shares held (13F)

127,040,682

Reporting holders

300

Top holders

largest 100 of 300 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	20,189,88220.2M	$304M	15.44%	ADD 4%
2	VANGUARD PORTFOLIO MANAGEMENT LLC	13,575,25813.6M	$205M	10.38%	NEW†
3	STATE STREET CORP	6,449,8696.4M	$97M	4.93%	ADD 14%
4	VANGUARD CAPITAL MANAGEMENT LLC	5,781,8935.8M	$87M	4.42%	NEW†
5	PARADIGM CAPITAL MANAGEMENT INC/NY	5,234,9005.2M	$79M	4.00%	ADD 5%
6	GEODE CAPITAL MANAGEMENT, LLC	3,325,1523.3M	$50M	2.54%	ADD 3%
7	FMR LLC	3,323,9603.3M	$50M	2.54%	ADD 11%
8	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	3,247,6803.2M	$49M	2.48%	ADD 8%
9	GOLDMAN SACHS GROUP INC	3,129,6113.1M	$47M	2.39%	ADD 13%
10	Trigran Investments, Inc.	2,847,3702.8M	$43M	2.18%	ADD 25%
11	Alyeska Investment Group, L.P.	2,786,6712.8M	$42M	2.13%	TRIM -6%
12	LOOMIS SAYLES & CO L P	2,715,6832.7M	$41M	2.08%	ADD 9%
13	BARROW HANLEY MEWHINNEY & STRAUSS LLC	2,651,8152.7M	$40M	2.03%	TRIM -6%
14	SOUTHERNSUN ASSET MANAGEMENT, LLC	2,297,9332.3M	$35M	1.76%	ADD 17%
15	RENAISSANCE TECHNOLOGIES LLC	2,076,0802.1M	$31M	1.59%	ADD 33%
16	MORGAN STANLEY	1,794,4971.8M	$27M	1.37%	—
17	ALLIANCEBERNSTEIN L.P.	1,602,4701.6M	$27M	1.23%	ADD 14%
18	VICTORY CAPITAL MANAGEMENT INC	1,689,2291.7M	$25M	1.29%	TRIM -58%
19	Nuveen, LLC	1,576,5091.6M	$24M	1.21%	TRIM -17%
20	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	1,494,7221.5M	$23M	1.14%	—
21	D. E. Shaw & Co., Inc.	1,470,4481.5M	$22M	1.12%	ADD 3%
22	NORTHERN TRUST CORP	1,402,5071.4M	$21M	1.07%	ADD 2%
23	Shannon River Fund Management LLC	1,313,0611.3M	$20M	1.00%	TRIM -31%
24	FEDERATED HERMES, INC.	1,054,3761.1M	$16M	0.81%	ADD 13%
25	ACADIAN ASSET MANAGEMENT LLC	999,520999,520	$15M	0.76%	ADD 196%
26	Impax Asset Management Group plc	965,178965,178	$15M	0.74%	ADD 2%
27	VANGUARD FIDUCIARY TRUST CO	927,866927,866	$14M	0.71%	NEW
28	COOPER CREEK PARTNERS MANAGEMENT LLC	838,178838,178	$13M	0.64%	—
29	AMERIPRISE FINANCIAL INC	817,529817,529	$12M	0.63%	TRIM -13%
30	SEB Asset Management AB	808,461808,461	$12M	0.62%	NEW
31	BANK OF AMERICA CORP /DE/	757,072757,072	$11M	0.58%	ADD 74%
32	Bank of New York Mellon Corp	742,898742,898	$11M	0.57%	TRIM -9%
33	Public Sector Pension Investment Board	726,373726,373	$11M	0.56%	ADD 2%
34	Connor, Clark & Lunn Investment Management Ltd.	720,905720,905	$11M	0.55%	ADD 14%
35	Trexquant Investment LP	695,652695,652	$10M	0.53%	ADD 31%
36	GLENMEDE TRUST CO NA	671,676671,676	$10M	0.51%	NEW
37	Invesco Ltd.	666,913666,913	$10M	0.51%	TRIM -43%
38	DEUTSCHE BANK AG\	659,173659,173	$10M	0.50%	TRIM -17%
39	PRINCIPAL FINANCIAL GROUP INC	656,528656,528	$10M	0.50%	ADD 3%
40	Defiance ETFs, LLC	610,673610,673	$9M	0.47%	ADD 39%
41	Penserra Capital Management LLC	610,673610,673	$9M	0.47%	ADD 39%
42	LYELL WEALTH MANAGEMENT, LP	582,345582,345	$9M	0.45%	—
43	OP Asset Management Ltd	541,968541,968	$8M	0.41%	NEW
44	RAYMOND JAMES FINANCIAL INC	540,405540,405	$8M	0.41%	—
45	Clearbridge Investments, LLC	510,093510,093	$8M	0.39%	TRIM -3%
46	Engineers Gate Manager LP	509,244509,244	$8M	0.39%	ADD 40%
47	CITADEL ADVISORS LLC	503,241503,241	$8M	0.38%	ADD 531%
48	BNP PARIBAS FINANCIAL MARKETS	468,596468,596	$7M	0.36%	TRIM -44%
49	PANAGORA ASSET MANAGEMENT INC	463,146463,146	$7M	0.35%	ADD 262%
50	Polar Asset Management Partners Inc.	461,629461,629	$7M	0.35%	NEW
51	Mirador Capital Partners LP	416,916416,916	$6M	0.32%	—
52	STATE OF WISCONSIN INVESTMENT BOARD	414,887414,887	$6M	0.32%	TRIM -17%
53	Focus Partners Wealth	392,071392,071	$6M	0.30%	—
54	TWO SIGMA INVESTMENTS, LP	377,134377,134	$6M	0.29%	TRIM -24%
55	Amundi	376,970376,970	$6M	0.29%	ADD 21%
56	RHUMBLINE ADVISERS	362,749362,749	$5M	0.28%	ADD 2%
57	SEI INVESTMENTS CO	360,866360,866	$5M	0.28%	ADD 51%
58	Circumference Group LLC	355,100355,100	$5M	0.27%	ADD 32%
59	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	351,251351,251	$5M	0.27%	ADD 3%
60	First Eagle Investment Management, LLC	349,540349,540	$5M	0.27%	NEW
61	VOYA INVESTMENT MANAGEMENT LLC	340,362340,362	$5M	0.26%	—
62	MACKENZIE FINANCIAL CORP	331,279331,279	$5M	0.25%	ADD 133%
63	ALGERT GLOBAL LLC	327,803327,803	$5M	0.25%	TRIM -46%
64	UBS Group AG	325,131325,131	$5M	0.25%	ADD 154%
65	TUDOR INVESTMENT CORP ET AL	316,991316,991	$5M	0.24%	ADD 1184%
66	Hillsdale Investment Management Inc.	308,660308,660	$5M	0.24%	ADD 5%
67	Legal & General Group Plc	304,952304,952	$5M	0.23%	TRIM -9%
68	HRT FINANCIAL LP	300,132300,132	$5M	0.23%	ADD 223%
69	FRANKLIN RESOURCES INC	291,806291,806	$4M	0.22%	TRIM -34%
70	JPMORGAN CHASE & CO	284,866284,866	$4M	0.22%	TRIM -11%
71	AQR CAPITAL MANAGEMENT LLC	282,403282,403	$4M	0.22%	ADD 68%
72	MARSHALL WACE, LLP	281,985281,985	$4M	0.22%	TRIM -31%
73	Tidal Investments LLC	264,971264,971	$4M	0.20%	ADD 46%
74	Man Group plc	263,929263,929	$4M	0.20%	ADD 105%
75	Swiss National Bank	263,400263,400	$4M	0.20%	—
76	Capital Advantage, Inc.	238,829238,829	$4M	0.18%	—
77	BARCLAYS PLC	231,361231,361	$3M	0.18%	TRIM -36%
78	BROOKTREE CAPITAL MANAGEMENT	222,688222,688	$3M	0.17%	—
79	ROYAL BANK OF CANADA	211,286211,286	$3M	0.16%	TRIM -27%
80	SIRIOS CAPITAL MANAGEMENT L P	182,396182,396	$3M	0.14%	NEW
81	INTECH INVESTMENT MANAGEMENT LLC	181,110181,110	$3M	0.14%	TRIM -49%
82	Aurora Investment Counsel	170,866170,866	$3M	0.13%	NEW
83	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	162,500162,500	$2M	0.12%	ADD 27%
84	IRONWOOD INVESTMENT MANAGEMENT LLC	161,362161,362	$2M	0.12%	ADD 56%
85	MILLENNIUM MANAGEMENT LLC	159,126159,126	$2M	0.12%	TRIM -86%
86	ESSEX INVESTMENT MANAGEMENT CO LLC	158,032158,032	$2M	0.12%	—
87	PRICE T ROWE ASSOCIATES INC /MD/	154,351154,351	$2M	0.12%	ADD 14%
88	AMERICAN CENTURY COMPANIES INC	153,372153,372	$2M	0.12%	ADD 38%
89	Brevan Howard Capital Management LP	140,947140,947	$2M	0.11%	ADD 268%
90	Ballast Asset Management, LP	139,668139,668	$2M	0.11%	ADD 2%
91	PRUDENTIAL FINANCIAL INC	136,838136,838	$2M	0.10%	ADD 10%
92	CANADA PENSION PLAN INVESTMENT BOARD	136,500136,500	$2M	0.10%	ADD 12%
93	D.A. DAVIDSON & CO.	135,000135,000	$2M	0.10%	—
94	CenterBook Partners LP	119,236119,236	$2M	0.09%	TRIM -72%
95	TEACHER RETIREMENT SYSTEM OF TEXAS	118,544118,544	$2M	0.09%	ADD 133%
96	CITIGROUP INC	114,830114,830	$2M	0.09%	ADD 146%
97	CANADA LIFE ASSURANCE Co	109,219109,219	$2M	0.08%	TRIM -5%
98	VANGUARD ASSET MANAGEMENT, Ltd	109,178109,178	$2M	0.08%	NEW
99	State of Alaska, Department of Revenue	104,105104,105	$2M	0.08%	—
100	OPPENHEIMER ASSET MANAGEMENT INC.	101,364101,364	$2M	0.08%	ADD 67%

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

BlackRock, Inc.

19.4M

19.0M

18.6M

19.2M

19.5M

20.2M

$304M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

13.6M

$205M

STATE STREET CORP

5.4M

5.5M

5.7M

6.4M

$97M

VANGUARD CAPITAL MANAGEMENT LLC

—

5.8M

$87M

PARADIGM CAPITAL MANAGEMENT INC/NY

5.2M

5.0M

4.9M

5.0M

5.2M

$79M

GEODE CAPITAL MANAGEMENT, LLC

3.1M

3.2M

3.3M

$50M

FMR LLC

282K

760K

1.1M

1.4M

3.0M

3.3M

$50M

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

146K

72K

2.5M

2.7M

3.0M

3.2M

$49M

GOLDMAN SACHS GROUP INC

3.0M

2.8M

2.6M

2.7M

2.8M

3.1M

$47M

Trigran Investments, Inc.

2.4M

3.1M

2.3M

2.2M

2.3M

2.8M

$43M

Alyeska Investment Group, L.P.

2.0M

2.4M

641K

739K

3.0M

2.8M

$42M

LOOMIS SAYLES & CO L P

—

2.2M

2.5M

2.7M

$41M

BARROW HANLEY MEWHINNEY & STRAUSS LLC

2.3M

2.8M

3.2M

3.0M

2.8M

2.7M

$40M

SOUTHERNSUN ASSET MANAGEMENT, LLC

—

584K

1.1M

1.3M

2.0M

2.3M

$35M

RENAISSANCE TECHNOLOGIES LLC

1.5M

1.6M

2.1M

$31M

Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	300	127,040,682	97.1%	$1.9B
2025-Q4

Short interest has its own tab now — open SI →

Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.

Activists & large holders· Schedule 13D/G beneficial owners · EXTR

Large holders — 13G, passive (top 3 by % of class)

Holder	% of class	Type	As of
VANGUARD PORTFOLIO MANAGEMENT LLC	10%	QII	2026-02-27	SEC →
VANGUARD CAPITAL MANAGEMENT LLC	5.05%	QII	2026-03-31	SEC →
VANGUARD GROUP INC	0%	QII	2026-03-13	SEC →

Source: SEC Schedule 13D/13G structured XML. 13D = active intent; 13G filers report passively (Rule 13d-1(b) QII / 13d-1(c) Passive / 13d-1(d) Exempt) and are not activists. Percent and delta are the group aggregate the filing reports. Structured 13D/G coverage begins December 2024 (SEC XML mandate).

Institutional ownership· 13F filers holding EXTR · 2026-Q1 methodology → sources →

300 holders

% of shares outstanding held

97.1%

Shares held (13F)

127,040,682

Reporting holders

300

Top holders

largest 100 of 300 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	20,189,88220.2M	$304M	15.44%	ADD 4%
2	VANGUARD PORTFOLIO MANAGEMENT LLC	13,575,25813.6M	$205M	10.38%	NEW†
3	STATE STREET CORP	6,449,8696.4M	$97M	4.93%	ADD 14%
4	VANGUARD CAPITAL MANAGEMENT LLC	5,781,8935.8M	$87M	4.42%	NEW†
5	PARADIGM CAPITAL MANAGEMENT INC/NY	5,234,9005.2M	$79M	4.00%	ADD 5%
6	GEODE CAPITAL MANAGEMENT, LLC	3,325,1523.3M	$50M	2.54%	ADD 3%
7	FMR LLC	3,323,9603.3M	$50M	2.54%	ADD 11%
8	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	3,247,6803.2M	$49M	2.48%	ADD 8%
9	GOLDMAN SACHS GROUP INC	3,129,6113.1M	$47M	2.39%	ADD 13%
10	Trigran Investments, Inc.	2,847,3702.8M	$43M	2.18%	ADD 25%
11	Alyeska Investment Group, L.P.	2,786,6712.8M	$42M	2.13%	TRIM -6%
12	LOOMIS SAYLES & CO L P	2,715,6832.7M	$41M	2.08%	ADD 9%
13	BARROW HANLEY MEWHINNEY & STRAUSS LLC	2,651,8152.7M	$40M	2.03%	TRIM -6%
14	SOUTHERNSUN ASSET MANAGEMENT, LLC	2,297,9332.3M	$35M	1.76%	ADD 17%
15	RENAISSANCE TECHNOLOGIES LLC	2,076,0802.1M	$31M	1.59%	ADD 33%
16	MORGAN STANLEY	1,794,4971.8M	$27M	1.37%	—
17	ALLIANCEBERNSTEIN L.P.	1,602,4701.6M	$27M	1.23%	ADD 14%
18	VICTORY CAPITAL MANAGEMENT INC	1,689,2291.7M	$25M	1.29%	TRIM -58%
19	Nuveen, LLC	1,576,5091.6M	$24M	1.21%	TRIM -17%
20	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	1,494,7221.5M	$23M	1.14%	—
21	D. E. Shaw & Co., Inc.	1,470,4481.5M	$22M	1.12%	ADD 3%
22	NORTHERN TRUST CORP	1,402,5071.4M	$21M	1.07%	ADD 2%
23	Shannon River Fund Management LLC	1,313,0611.3M	$20M	1.00%	TRIM -31%
24	FEDERATED HERMES, INC.	1,054,3761.1M	$16M	0.81%	ADD 13%
25	ACADIAN ASSET MANAGEMENT LLC	999,520999,520	$15M	0.76%	ADD 196%
26	Impax Asset Management Group plc	965,178965,178	$15M	0.74%	ADD 2%
27	VANGUARD FIDUCIARY TRUST CO	927,866927,866	$14M	0.71%	NEW
28	COOPER CREEK PARTNERS MANAGEMENT LLC	838,178838,178	$13M	0.64%	—
29	AMERIPRISE FINANCIAL INC	817,529817,529	$12M	0.63%	TRIM -13%
30	SEB Asset Management AB	808,461808,461	$12M	0.62%	NEW
31	BANK OF AMERICA CORP /DE/	757,072757,072	$11M	0.58%	ADD 74%
32	Bank of New York Mellon Corp	742,898742,898	$11M	0.57%	TRIM -9%
33	Public Sector Pension Investment Board	726,373726,373	$11M	0.56%	ADD 2%
34	Connor, Clark & Lunn Investment Management Ltd.	720,905720,905	$11M	0.55%	ADD 14%
35	Trexquant Investment LP	695,652695,652	$10M	0.53%	ADD 31%
36	GLENMEDE TRUST CO NA	671,676671,676	$10M	0.51%	NEW
37	Invesco Ltd.	666,913666,913	$10M	0.51%	TRIM -43%
38	DEUTSCHE BANK AG\	659,173659,173	$10M	0.50%	TRIM -17%
39	PRINCIPAL FINANCIAL GROUP INC	656,528656,528	$10M	0.50%	ADD 3%
40	Defiance ETFs, LLC	610,673610,673	$9M	0.47%	ADD 39%
41	Penserra Capital Management LLC	610,673610,673	$9M	0.47%	ADD 39%
42	LYELL WEALTH MANAGEMENT, LP	582,345582,345	$9M	0.45%	—
43	OP Asset Management Ltd	541,968541,968	$8M	0.41%	NEW
44	RAYMOND JAMES FINANCIAL INC	540,405540,405	$8M	0.41%	—
45	Clearbridge Investments, LLC	510,093510,093	$8M	0.39%	TRIM -3%
46	Engineers Gate Manager LP	509,244509,244	$8M	0.39%	ADD 40%
47	CITADEL ADVISORS LLC	503,241503,241	$8M	0.38%	ADD 531%
48	BNP PARIBAS FINANCIAL MARKETS	468,596468,596	$7M	0.36%	TRIM -44%
49	PANAGORA ASSET MANAGEMENT INC	463,146463,146	$7M	0.35%	ADD 262%
50	Polar Asset Management Partners Inc.	461,629461,629	$7M	0.35%	NEW
51	Mirador Capital Partners LP	416,916416,916	$6M	0.32%	—
52	STATE OF WISCONSIN INVESTMENT BOARD	414,887414,887	$6M	0.32%	TRIM -17%
53	Focus Partners Wealth	392,071392,071	$6M	0.30%	—
54	TWO SIGMA INVESTMENTS, LP	377,134377,134	$6M	0.29%	TRIM -24%
55	Amundi	376,970376,970	$6M	0.29%	ADD 21%
56	RHUMBLINE ADVISERS	362,749362,749	$5M	0.28%	ADD 2%
57	SEI INVESTMENTS CO	360,866360,866	$5M	0.28%	ADD 51%
58	Circumference Group LLC	355,100355,100	$5M	0.27%	ADD 32%
59	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	351,251351,251	$5M	0.27%	ADD 3%
60	First Eagle Investment Management, LLC	349,540349,540	$5M	0.27%	NEW
61	VOYA INVESTMENT MANAGEMENT LLC	340,362340,362	$5M	0.26%	—
62	MACKENZIE FINANCIAL CORP	331,279331,279	$5M	0.25%	ADD 133%
63	ALGERT GLOBAL LLC	327,803327,803	$5M	0.25%	TRIM -46%
64	UBS Group AG	325,131325,131	$5M	0.25%	ADD 154%
65	TUDOR INVESTMENT CORP ET AL	316,991316,991	$5M	0.24%	ADD 1184%
66	Hillsdale Investment Management Inc.	308,660308,660	$5M	0.24%	ADD 5%
67	Legal & General Group Plc	304,952304,952	$5M	0.23%	TRIM -9%
68	HRT FINANCIAL LP	300,132300,132	$5M	0.23%	ADD 223%
69	FRANKLIN RESOURCES INC	291,806291,806	$4M	0.22%	TRIM -34%
70	JPMORGAN CHASE & CO	284,866284,866	$4M	0.22%	TRIM -11%
71	AQR CAPITAL MANAGEMENT LLC	282,403282,403	$4M	0.22%	ADD 68%
72	MARSHALL WACE, LLP	281,985281,985	$4M	0.22%	TRIM -31%
73	Tidal Investments LLC	264,971264,971	$4M	0.20%	ADD 46%
74	Man Group plc	263,929263,929	$4M	0.20%	ADD 105%
75	Swiss National Bank	263,400263,400	$4M	0.20%	—
76	Capital Advantage, Inc.	238,829238,829	$4M	0.18%	—
77	BARCLAYS PLC	231,361231,361	$3M	0.18%	TRIM -36%
78	BROOKTREE CAPITAL MANAGEMENT	222,688222,688	$3M	0.17%	—
79	ROYAL BANK OF CANADA	211,286211,286	$3M	0.16%	TRIM -27%
80	SIRIOS CAPITAL MANAGEMENT L P	182,396182,396	$3M	0.14%	NEW
81	INTECH INVESTMENT MANAGEMENT LLC	181,110181,110	$3M	0.14%	TRIM -49%
82	Aurora Investment Counsel	170,866170,866	$3M	0.13%	NEW
83	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	162,500162,500	$2M	0.12%	ADD 27%
84	IRONWOOD INVESTMENT MANAGEMENT LLC	161,362161,362	$2M	0.12%	ADD 56%
85	MILLENNIUM MANAGEMENT LLC	159,126159,126	$2M	0.12%	TRIM -86%
86	ESSEX INVESTMENT MANAGEMENT CO LLC	158,032158,032	$2M	0.12%	—
87	PRICE T ROWE ASSOCIATES INC /MD/	154,351154,351	$2M	0.12%	ADD 14%
88	AMERICAN CENTURY COMPANIES INC	153,372153,372	$2M	0.12%	ADD 38%
89	Brevan Howard Capital Management LP	140,947140,947	$2M	0.11%	ADD 268%
90	Ballast Asset Management, LP	139,668139,668	$2M	0.11%	ADD 2%
91	PRUDENTIAL FINANCIAL INC	136,838136,838	$2M	0.10%	ADD 10%
92	CANADA PENSION PLAN INVESTMENT BOARD	136,500136,500	$2M	0.10%	ADD 12%
93	D.A. DAVIDSON & CO.	135,000135,000	$2M	0.10%	—
94	CenterBook Partners LP	119,236119,236	$2M	0.09%	TRIM -72%
95	TEACHER RETIREMENT SYSTEM OF TEXAS	118,544118,544	$2M	0.09%	ADD 133%
96	CITIGROUP INC	114,830114,830	$2M	0.09%	ADD 146%
97	CANADA LIFE ASSURANCE Co	109,219109,219	$2M	0.08%	TRIM -5%
98	VANGUARD ASSET MANAGEMENT, Ltd	109,178109,178	$2M	0.08%	NEW
99	State of Alaska, Department of Revenue	104,105104,105	$2M	0.08%	—
100	OPPENHEIMER ASSET MANAGEMENT INC.	101,364101,364	$2M	0.08%	ADD 67%

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

BlackRock, Inc.

19.4M

19.0M

18.6M

19.2M

19.5M

20.2M

$304M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

13.6M

$205M

STATE STREET CORP

5.4M

5.5M

5.7M

6.4M

$97M

VANGUARD CAPITAL MANAGEMENT LLC

—

5.8M

$87M

PARADIGM CAPITAL MANAGEMENT INC/NY

5.2M

5.0M

4.9M

5.0M

5.2M

$79M

GEODE CAPITAL MANAGEMENT, LLC

3.1M

3.2M

3.3M

$50M

FMR LLC

282K

760K

1.1M

1.4M

3.0M

3.3M

$50M

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

146K

72K

2.5M

2.7M

3.0M

3.2M

$49M

GOLDMAN SACHS GROUP INC

3.0M

2.8M

2.6M

2.7M

2.8M

3.1M

$47M

Trigran Investments, Inc.

2.4M

3.1M

2.3M

2.2M

2.3M

2.8M

$43M

Alyeska Investment Group, L.P.

2.0M

2.4M

641K

739K

3.0M

2.8M

$42M

LOOMIS SAYLES & CO L P

—

2.2M

2.5M

2.7M

$41M

BARROW HANLEY MEWHINNEY & STRAUSS LLC

2.3M

2.8M

3.2M

3.0M

2.8M

2.7M

$40M

SOUTHERNSUN ASSET MANAGEMENT, LLC

—

584K

1.1M

1.3M

2.0M

2.3M

$35M

RENAISSANCE TECHNOLOGIES LLC

1.5M

1.6M

2.1M

$31M

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	300	127,040,682	97.1%	$1.9B
2025-Q4

Short interest has its own tab now — open SI →

Activists & large holders· Schedule 13D/G beneficial owners · EXTR

Large holders — 13G, passive (top 3 by % of class)

Holder	% of class	Type	As of
VANGUARD PORTFOLIO MANAGEMENT LLC	10%	QII	2026-02-27	SEC →
VANGUARD CAPITAL MANAGEMENT LLC	5.05%	QII	2026-03-31	SEC →
VANGUARD GROUP INC	0%	QII	2026-03-13	SEC →

EXTR US Equity☆

Institutional ownership· 13F filers holding EXTR · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · EXTR

Institutional ownership· 13F filers holding EXTR · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · EXTR

EXTR US Equity