EXTREME NETWORKS INC (EXTR) Institutional Shareholders
EXTREME NETWORKS INC (EXTR) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $1.88B in EXTR holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of EXTR tracked by InsiderSet, reporting ownership valued at approximately $304.46M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $605.49M, representing an estimated gain of +98.87% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 54% of the total disclosed EXTR value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Portfolio Management Llc, State Street Corp, and several other long-term asset managers with concentrated positions in EXTREME NETWORKS INC (EXTR).
This page ranks the largest institutional EXTR shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
298
Total Reported Value
$1.88B
Largest Holder
Blackrock, Inc.
Largest Position
$304.46M
Insider Transactions (90d)
16
Latest Filing Quarter
Q2 2026
New Institutional Positions
55
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 20,189,882 | $304,463,425 | $605,494,561 | +$301,031,136 | +98.87% | |
| Vanguard Portfolio Management Llc | 0.01% | 13,575,258 | $204,714,891 | $407,121,987 | +$202,407,096 | +98.87% | |
| State Street Corp | 0.00% | 6,449,869 | $97,264,025 | $193,431,571 | +$96,167,546 | +98.87% | |
| Vanguard Capital Management Llc | 0.00% | 5,781,893 | $87,190,946 | $173,398,971 | +$86,208,025 | +98.87% | |
| Paradigm Capital Management Inc/Ny | 3.02% | 5,234,900 | $78,942,292 | $156,994,651 | +$78,052,359 | +98.87% | |
| Geode Capital Management, Llc | 0.00% | 3,325,152 | $50,151,872 | $99,721,308 | +$49,569,436 | +98.84% | |
| Fmr Llc | 0.00% | 3,323,960 | $50,125,312 | $99,685,560 | +$49,560,248 | +98.87% | |
| Arrowstreet Capital, Limited Partnership | 0.03% | 3,247,680 | $48,975,014 | $97,397,923 | +$48,422,909 | +98.87% | |
| Goldman Sachs Group Inc | 0.01% | 3,129,611 | $47,194,534 | $93,857,034 | +$46,662,500 | +98.87% | |
| Trigran Investments, Inc. | 10.27% | 2,847,370 | $42,938,540 | $85,392,626 | +$42,454,086 | +98.87% | |
| Alyeska Investment Group, L.P. | 0.12% | 2,786,671 | $42,022,999 | $83,572,263 | +$41,549,264 | +98.87% | |
| Loomis Sayles & Co L P | 0.06% | 2,715,683 | $40,952,500 | $81,443,333 | +$40,490,833 | +98.87% | |
| Barrow Hanley Mewhinney & Strauss Llc | 0.13% | 2,651,815 | $39,989,371 | $79,527,932 | +$39,538,561 | +98.87% | |
| Southernsun Asset Management, Llc | 5.02% | 2,297,933 | $34,652,830 | $68,915,011 | +$34,262,181 | +98.87% | |
| Renaissance Technologies LLC | Jim Simons | 0.05% | 2,076,080 | $31,307,286 | $62,261,639 | +$30,954,353 | +98.87% |
| Morgan Stanley | 0.00% | 1,794,497 | $27,061,030 | $53,816,965 | +$26,755,935 | +98.87% | |
| Alliancebernstein L.P. | 0.01% | 1,602,470 | $26,681,126 | $48,058,075 | +$21,376,949 | +80.12% | |
| Victory Capital Management Inc | 0.02% | 1,689,229 | $25,473,573 | $50,659,978 | +$25,186,405 | +98.87% | |
| Nuveen, Llc | 0.01% | 1,576,509 | $23,773,755 | $47,279,505 | +$23,505,750 | +98.87% | |
| Charles Schwab Investment Management Inc | 0.00% | 1,494,722 | $22,540,408 | $44,826,713 | +$22,286,305 | +98.87% | |
| D. E. Shaw & Co., Inc. | 0.02% | 1,470,448 | $22,174,356 | $44,098,736 | +$21,924,380 | +98.87% | |
| Northern Trust Corp | 0.00% | 1,402,507 | $21,149,806 | $42,061,185 | +$20,911,379 | +98.87% | |
| Shannon River Fund Management Llc | 3.78% | 1,313,061 | $19,800,960 | $39,378,699 | +$19,577,739 | +98.87% | |
| Federated Hermes, Inc. | 0.03% | 1,054,376 | $15,899,990 | $31,620,736 | +$15,720,746 | +98.87% | |
| Impax Asset Management Group Plc | 0.10% | 965,178 | $14,554,884 | $28,945,688 | +$14,390,804 | +98.87% | |
| Vanguard Fiduciary Trust Co | 0.00% | 927,866 | $13,992,219 | $27,826,701 | +$13,834,482 | +98.87% | |
| Mirador Capital Partners Lp | 1.64% | 414,824 | $13,427,853 | $12,440,572 | -$987,281 | -7.35% | |
| Ameriprise Financial Inc | 0.00% | 817,529 | $12,328,336 | $24,517,695 | +$12,189,359 | +98.87% | |
| Seb Asset Management Ab | 0.05% | 808,461 | $12,191,576 | $24,245,745 | +$12,054,169 | +98.87% | |
| Peregrine Capital Management Llc | 0.40% | 376,230 | $12,178,565 | $11,283,138 | -$895,427 | -7.35% | |
| Bank Of America Corp | 0.00% | 757,072 | $11,416,646 | $22,704,589 | +$11,287,943 | +98.87% | |
| Bank Of New York Mellon Corp | 0.00% | 742,898 | $11,202,895 | $22,279,511 | +$11,076,616 | +98.87% | |
| Public Sector Pension Investment Board | 0.03% | 726,373 | $10,953,705 | $21,783,926 | +$10,830,221 | +98.87% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.03% | 720,905 | $10,871,247 | $21,619,941 | +$10,748,694 | +98.87% | |
| Trexquant Investment Lp | 0.08% | 695,652 | $10,490,432 | $20,862,603 | +$10,372,171 | +98.87% | |
| Invesco Ltd. | 0.00% | 666,913 | $10,057,049 | $20,000,721 | +$9,943,672 | +98.87% | |
| Deutsche Bank Ag\ | 0.00% | 659,173 | $9,940,330 | $19,768,598 | +$9,828,268 | +98.87% | |
| Principal Financial Group Inc | 0.01% | 656,528 | $9,900,442 | $19,689,275 | +$9,788,833 | +98.87% | |
| Defiance Etfs, Llc | 0.13% | 610,673 | $9,208,949 | $18,314,083 | +$9,105,134 | +98.87% | |
| Lyell Wealth Management, Lp | 0.65% | 582,345 | $8,781,763 | $17,464,527 | +$8,682,764 | +98.87% | |
| Raymond James Financial Inc | 0.00% | 540,405 | $8,149,306 | $16,206,746 | +$8,057,440 | +98.87% | |
| Clearbridge Investments, Llc | 0.01% | 510,093 | $7,692,208 | $15,297,689 | +$7,605,481 | +98.87% | |
| Engineers Gate Manager Lp | 0.10% | 509,244 | $7,679,400 | $15,272,228 | +$7,592,828 | +98.87% | |
| Citadel Advisors Llc | 0.01% | 503,241 | $7,588,875 | $15,092,198 | +$7,503,323 | +98.87% | |
| Op Asset Management Ltd | 0.08% | 227,830 | $7,374,857 | $6,832,622 | -$542,235 | -7.35% | |
| Capital Advantage, Inc. | 0.87% | 219,308 | $7,099,000 | $6,577,047 | -$521,953 | -7.35% | |
| Bnp Paribas Financial Markets | 0.00% | 468,596 | $7,066,428 | $14,053,194 | +$6,986,766 | +98.87% | |
| Panagora Asset Management Inc | 0.03% | 463,146 | $6,984,242 | $13,889,749 | +$6,905,507 | +98.87% | |
| Polar Asset Management Partners Inc. | 0.17% | 461,629 | $6,961,365 | $13,844,254 | +$6,882,889 | +98.87% | |
| State Of Wisconsin Investment Board | 0.01% | 414,887 | $6,256,496 | $12,442,461 | +$6,185,965 | +98.87% |
Frequently asked questions about EXTR
Who owns the most EXTR stock?
The largest holders of EXTR are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for EXTREME NETWORKS INC (EXTR).
Is EXTR widely held by superinvestors?
Many widely followed stocks like EXTR appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly EXTR is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.