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 June 30, 2026. The institutional investors covered on this page collectively reported approximately $4.10B 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 $674.66M in its June 30, 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 $464.99M, representing an estimated loss of -31.08% 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
331
Total Reported Value
$4.10B
Largest Holder
Blackrock, Inc.
Largest Position
$674.66M
Insider Transactions (90d)
24
Latest Filing Quarter
Q2 2026
New Institutional Positions
66
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% | 20,842,155 | $674,660,566 | $464,988,478 | -$209,672,088 | -31.08% | |
| Vanguard Portfolio Management Llc | 0.02% | 12,841,357 | $415,674,726 | $286,490,675 | -$129,184,051 | -31.08% | |
| State Street Corp | 0.01% | 6,137,138 | $198,578,281 | $136,919,549 | -$61,658,732 | -31.05% | |
| Vanguard Capital Management Llc | 0.00% | 5,680,918 | $183,891,316 | $126,741,281 | -$57,150,035 | -31.08% | |
| Price T Rowe Associates Inc | 0.02% | 5,325,298 | $172,381,000 | $118,807,398 | -$53,573,602 | -31.08% | |
| Paradigm Capital Management Inc/Ny | 3.74% | 4,241,300 | $137,290,881 | $94,623,403 | -$42,667,478 | -31.08% | |
| Fmr Llc | 0.00% | 3,510,085 | $113,621,456 | $78,309,996 | -$35,311,460 | -31.08% | |
| Geode Capital Management, Llc | 0.01% | 3,405,660 | $110,260,358 | $75,980,275 | -$34,280,083 | -31.09% | |
| Arrowstreet Capital, Limited Partnership | 0.05% | 3,358,416 | $108,711,926 | $74,926,261 | -$33,785,665 | -31.08% | |
| Goldman Sachs Group Inc | 0.01% | 3,006,288 | $97,313,543 | $67,070,285 | -$30,243,258 | -31.08% | |
| Loomis Sayles & Co L P | 0.10% | 2,536,716 | $82,113,497 | $56,594,134 | -$25,519,363 | -31.08% | |
| American Century Companies Inc | 0.04% | 2,481,691 | $80,332,386 | $55,366,526 | -$24,965,860 | -31.08% | |
| Renaissance Technologies LLC | Jim Simons | 0.08% | 1,862,580 | $60,291,715 | $41,554,160 | -$18,737,555 | -31.08% |
| Morgan Stanley | 0.00% | 1,808,176 | $58,530,688 | $40,340,407 | -$18,190,281 | -31.08% | |
| Ameriprise Financial Inc | 0.01% | 1,699,543 | $55,012,717 | $37,916,804 | -$17,095,913 | -31.08% | |
| Southernsun Asset Management, Llc | 7.34% | 1,685,450 | $54,558,016 | $37,602,390 | -$16,955,627 | -31.08% | |
| Boston Partners | 0.05% | 1,673,962 | $54,300,039 | $37,346,092 | -$16,953,947 | -31.22% | |
| Trigran Investments, Inc. | 8.95% | 1,507,325 | $48,792,110 | $33,628,421 | -$15,163,689 | -31.08% | |
| Nuveen, Llc | 0.01% | 1,483,289 | $48,014,065 | $33,092,178 | -$14,921,887 | -31.08% | |
| Northern Trust Corp | 0.01% | 1,461,747 | $47,316,751 | $32,611,576 | -$14,705,175 | -31.08% | |
| Shannon River Fund Management Llc | 4.11% | 1,424,095 | $46,097,955 | $31,771,559 | -$14,326,396 | -31.08% | |
| Bank Of America Corp | 0.00% | 1,406,591 | $45,531,352 | $31,381,045 | -$14,150,307 | -31.08% | |
| Charles Schwab Investment Management Inc | 0.01% | 1,380,240 | $44,678,369 | $30,793,154 | -$13,885,215 | -31.08% | |
| Panagora Asset Management Inc | 0.10% | 1,031,475 | $33,388,846 | $23,012,207 | -$10,376,639 | -31.08% | |
| Millennium Management Llc | 0.02% | 1,028,891 | $33,305,202 | $22,954,558 | -$10,350,644 | -31.08% | |
| Acadian Asset Management Llc | 0.04% | 975,210 | $31,554,000 | $21,756,935 | -$9,797,065 | -31.05% | |
| D. E. Shaw & Co., Inc. | 0.02% | 938,182 | $30,368,951 | $20,930,840 | -$9,438,111 | -31.08% | |
| Vanguard Fiduciary Trust Co | 0.01% | 929,038 | $30,072,960 | $20,726,838 | -$9,346,122 | -31.08% | |
| Jane Street Group, Llc | 0.02% | 923,559 | $29,895,605 | $20,604,601 | -$9,291,004 | -31.08% | |
| Victory Capital Management Inc | 0.02% | 847,803 | $27,443,383 | $18,914,485 | -$8,528,898 | -31.08% | |
| Two Sigma Investments, Lp | 0.02% | 812,553 | $26,302,341 | $18,128,057 | -$8,174,284 | -31.08% | |
| Lord, Abbett & Co. Llc | 0.07% | 809,321 | $26,198,000 | $18,055,952 | -$8,142,048 | -31.08% | |
| Bnp Paribas Financial Markets | 0.01% | 745,841 | $24,142,873 | $16,639,713 | -$7,503,160 | -31.08% | |
| Bank Of New York Mellon Corp | 0.00% | 738,211 | $23,895,891 | $16,469,487 | -$7,426,404 | -31.08% | |
| Ubs Group Ag | 0.00% | 708,925 | $22,947,903 | $15,816,117 | -$7,131,786 | -31.08% | |
| Invesco Ltd. | 0.00% | 699,203 | $22,633,201 | $15,599,219 | -$7,033,982 | -31.08% | |
| Cooper Creek Partners Management Llc | 0.93% | 690,092 | $22,338,000 | $15,395,953 | -$6,942,047 | -31.08% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.04% | 673,134 | $21,789,348 | $15,017,620 | -$6,771,728 | -31.08% | |
| Alliancebernstein L.P. | 0.01% | 1,430,310 | $21,569,075 | $31,910,216 | +$10,341,141 | +47.94% | |
| Glenmede Trust Co Na | 0.09% | 659,194 | $21,338,109 | $14,706,618 | -$6,631,491 | -31.08% | |
| Principal Financial Group Inc | 0.01% | 655,961 | $21,233,459 | $14,634,490 | -$6,598,969 | -31.08% | |
| Federated Hermes, Inc. | 0.03% | 635,142 | $20,559,547 | $14,170,018 | -$6,389,529 | -31.08% | |
| Penserra Capital Management Llc | 0.15% | 594,878 | $19,256,000 | $13,271,728 | -$5,984,272 | -31.08% | |
| Impax Asset Management Group Plc | 0.13% | 593,678 | $19,217,357 | $13,244,956 | -$5,972,401 | -31.08% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.03% | 582,916 | $18,868,991 | $13,004,856 | -$5,864,135 | -31.08% |
| Lyell Wealth Management, Lp | 1.16% | 582,345 | $18,850,508 | $12,992,117 | -$5,858,391 | -31.08% | |
| Defiance Etfs, Llc | 0.26% | 594,878 | $18,697,016 | $13,271,728 | -$5,425,288 | -29.02% | |
| Raymond James Financial Inc | 0.00% | 537,573 | $17,401,238 | $11,993,254 | -$5,407,984 | -31.08% | |
| Citadel Advisors Llc | 0.01% | 534,750 | $17,309,857 | $11,930,273 | -$5,379,585 | -31.08% | |
| Seb Asset Management Ab | 0.06% | 476,442 | $15,422,398 | $10,629,421 | -$4,792,977 | -31.08% |
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.