EXTR · Extreme Networks Inc · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding EXTR
All superinvestors →Holder Concentration
Across 344 13F filersWho Holds EXTR
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 342 filers, like-for-like change +1.2%; actively managed books +2.6%; index-like books -1.0%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 48.2% | 175 | -2.7% |
| Exempt adviser | 0.4% | 4 | +0.7% |
| Adviser | 3.4% | 8 | +18.2% |
| Bank | 9.0% | 16 | +9.1% |
| Insurer | 0.8% | 3 | +27.2% |
| Broker-dealer | 0.1% | 2 | +82.6% |
| Benefit plan | 0.4% | 6 | -28.4% |
| Non-US | 1.6% | 10 | -2.8% |
| Holding company | 23.3% | 10 | +0.5% |
| Unknown | 12.7% | 108 | +9.6% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 37.5% | 39 | -1.0% |
| Systematic-like | 4.3% | 29 | -34.5% |
| Concentrated | 5.2% | 38 | -26.4% |
| Diversified active | 53.0% | 236 | +12.0% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 58.5% | 185 | +4.1% |
| Medium turnover | 17.4% | 80 | +6.4% |
| High turnover | 7.3% | 51 | -16.7% |
| Unknown | 16.9% | 26 | -4.1% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 17.5% | 41 | -4.5% |
| Medium horizon | 19.6% | 58 | -2.2% |
| Long horizon | 59.2% | 216 | +9.2% |
| Unknown | 3.7% | 27 | -40.5% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 4.5% | 74 | -27.4% |
| $1B to $10B | 8.5% | 94 | -11.5% |
| $10B to $100B | 13.6% | 108 | -25.5% |
| $100B or more | 73.5% | 66 | +13.3% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 1.8% | 80 | +4.1% |
| Pooled investment vehicles | 9.6% | 33 | -23.8% |
| Registered funds and BDCs | 26.7% | 28 | +21.8% |
| Pension and profit sharing plans | 0.0% | 1 | -84.6% |
| Insurance companies | 0.3% | 3 | -15.6% |
| Governments and sovereign funds | 1.4% | 5 | -9.1% |
| Corporations | 0.0% | 1 | -69.8% |
| Other investment advisers | 0.1% | 6 | +44.9% |
| Other | 0.1% | 1 | -4.2% |
| Diversified | 8.3% | 17 | -26.3% |
| Unknown | 51.8% | 167 | +5.1% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 16.5% | 46 | -12.4% |
| Private equity funds | 1.1% | 11 | -40.5% |
| Venture capital funds | 0.0% | 1 | +20.3% |
| Real estate funds | 0.0% | 2 | -62.7% |
| Liquidity funds | 0.0% | 1 | new |
| Securitized asset funds | 0.3% | 1 | -1.9% |
| Other private funds | 8.3% | 18 | +36.5% |
| Mixed private funds | 1.1% | 2 | -11.5% |
| Private funds, type not stated | 0.1% | 5 | +979.6% |
| No private funds | 21.3% | 92 | -1.9% |
| Unknown | 51.4% | 163 | +5.1% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 94.5% | 286 | +2.9% |
| Outside the US | 5.5% | 56 | -21.0% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 3 holders with no observed 2026-03-31 13F and 2 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
342 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 24.2% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies EXTR's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | AZTA Azenta, Inc. | 4 |
| 2 | TILE Interface Inc | 5 |
| 3 | KLIC Kulicke & Soffa Industries Inc | 7 |
| 4 | UCTT Ultra Clean Holdings, Inc. | 7 |
| 5 | FIVN Five9, Inc. | 5 |
| 6 | ALGM Allegro Microsystems, Inc. | 5 |
| 7 | YETI YETI Holdings, Inc. | 5 |
| 8 | AMPL Amplitude, Inc. | 3 |
| 9 | HLIT Harmonic Inc. | 3 |
| 10 | BCC BOISE CASCADE Co | 3 |
Shareholder Targets
13F filers that own its peers but not EXTR, quarter ended Jun 30, 2026Found through its holder-overlap peers: AZTA, TILE, KLIC, UCTT, FIVN, ALGM, YETI, AMPL, HLIT, BCC, HRI, KN, SYNA, RELY, PAGS, FORM, AMBA, PLOW, SKY, ADTN. 1,118 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | DIMENSIONAL FUND ADVISORS LP Registered adviser, Diversified active | $2,035,769,195 19 held | FORM, KN, HRI |
| 2 | WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active | $912,241,415 11 held | SKY, YETI, BCC |
| 3 | Capital Research Global Investors Adviser, Diversified active | $835,885,289 1 held | ALGM |
| 4 | NORGES BANK Non-US, Index-like | $700,913,236 14 held | HRI, FORM, ALGM |
| 5 | EARNEST PARTNERS LLC Registered adviser, Diversified active | $601,850,815 1 held | FORM |
| 6 | FULLER & THALER ASSET MANAGEMENT, INC. Registered adviser, Diversified active | $575,898,456 6 held | FORM, SKY, KLIC |
| 7 | Capital World Investors Adviser, Diversified active | $506,046,926 3 held | UCTT, SKY, FORM |
| 8 | Point72 Asset Management, L.P. Registered adviser, Systematic-like | $485,927,615 16 held | KLIC, SKY, PAGS |
| 9 | BAILLIE GIFFORD & CO Adviser, Diversified active | $469,604,346 3 held | RELY, YETI, AMPL |
| 10 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $422,578,462 8 held | FORM, SYNA, SKY |
Fund Ownership of EXTR by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 29.20% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 4.96% | 6,473,509 |
| Index ETFs | 24.24% | 31,625,488 |
| Active ETFs | 1.47% | 1,919,162 |
| Active funds | 16.59% | 21,647,662 |
| Unclassified | 0.79% | 1,035,393 |
| All registered funds | 48.05% | 62,701,214 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $674,660,550 | 16.20% | 20,842,155 | Shares | 2026-08-07 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $415,674,726 | 9.98% | 12,841,357 | Shares | 2026-08-13 | |
| Mega STATE STREET CORP Bank | $198,659,157 | 4.77% | 6,137,138 | Shares | 2026-09-22 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $183,891,315 | 4.42% | 5,680,918 | Shares | 2026-08-13 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $172,379,895 | 4.14% | 5,325,298 | Shares | 2026-08-14 | |
| Mid PARADIGM CAPITAL MANAGEMENT INC/NY Registered adviser | $137,290,881 | 3.30% | 4,241,300 | Shares | 2026-08-13 | |
| Mega FMR LLC Holding company | $113,621,449 | 2.73% | 3,510,085 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $110,241,213 | 2.65% | 3,405,660 | Shares | 2026-08-12 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser | $108,711,925 | 2.61% | 3,358,416 | Shares | 2026-08-13 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $97,313,540 | 2.34% | 3,006,288 | Shares | 2026-08-14 | |
| Large LOOMIS SAYLES & CO L P Registered adviser | $82,113,495 | 1.97% | 2,536,716 | Shares | 2026-08-14 | |
| Mega AMERICAN CENTURY COMPANIES INC | $80,332,337 | 1.93% | 2,481,691 | Shares | 2026-08-12 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $60,291,714 | 1.45% | 1,862,580 | Shares | 2026-08-13 | |
| Mega MORGAN STANLEY Holding company | $58,530,654 | 1.41% | 1,808,176 | Shares | 2026-08-13 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $55,014,206 | 1.32% | 1,699,543 | Shares | 2026-08-14 | |
| Small SOUTHERNSUN ASSET MANAGEMENT, LLC | $54,558,016 | 1.31% | 1,685,450 | Shares | 2026-08-14 | |
| Mega Boston Partners Registered adviser | $54,186,148 | 1.30% | 1,673,962 | Shares | 2026-08-04 | |
| Small Trigran Investments, Inc. Registered adviser | $48,792,109 | 1.17% | 1,507,325 | Shares | 2026-08-12 | |
| Mega Nuveen, LLC | $48,014,063 | 1.15% | 1,483,289 | Shares | 2026-08-11 | |
| Mega NORTHERN TRUST CORP Bank | $47,316,746 | 1.14% | 1,461,747 | Shares | 2026-08-13 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $46,299,134 | 1.11% | 1,430,310 | Shares | 2026-08-14 | |
| Mid Shannon River Fund Management LLC Registered adviser | $46,097,955 | 1.11% | 1,424,095 | Shares | 2026-08-13 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $45,531,348 | 1.09% | 1,406,591 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $44,678,368 | 1.07% | 1,380,240 | Shares | 2026-08-14 | |
| Large PANAGORA ASSET MANAGEMENT INC Registered adviser | $33,388,845 | 0.80% | 1,031,475 | Shares | 2026-08-06 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $33,305,201 | 0.80% | 1,028,891 | Shares | 2026-08-14 | |
| Large ACADIAN ASSET MANAGEMENT LLC | $31,567,547 | 0.76% | 975,210 | Shares | 2026-08-13 | |
| Mega D. E. Shaw & Co., Inc. | $30,368,951 | 0.73% | 938,182 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $30,072,960 | 0.72% | 929,038 | Shares | 2026-08-13 | |
| Mega JANE STREET GROUP, LLC | $29,895,604 | 0.72% | 923,559 | Shares | 2026-08-14 | |
| Mega VICTORY CAPITAL MANAGEMENT INC Registered adviser | $27,443,383 | 0.66% | 847,803 | Shares | 2026-08-07 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $26,302,340 | 0.63% | 812,553 | Shares | 2026-08-14 | |
| Large LORD, ABBETT & CO. LLC Registered adviser | $26,197,720 | 0.63% | 809,321 | Shares | 2026-08-14 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $24,142,873 | 0.58% | 745,841 | Shares | 2026-08-13 | |
| Mega Bank of New York Mellon Corp Bank | $23,895,885 | 0.57% | 738,211 | Shares | 2026-08-06 | |
| Mega UBS Group AG Bank | $22,947,901 | 0.55% | 708,925 | Shares | 2026-08-13 | |
| Mega Invesco Ltd. Adviser | $22,633,199 | 0.54% | 699,203 | Shares | 2026-08-14 | |
| Mid COOPER CREEK PARTNERS MANAGEMENT LLC Adviser | $22,338,278 | 0.54% | 690,092 | Shares | 2026-08-14 | |
| Large Connor, Clark & Lunn Investment Management Ltd. Registered adviser | $21,789,347 | 0.52% | 673,134 | Shares | 2026-08-13 | |
| Large GLENMEDE TRUST CO NA | $21,338,109 | 0.51% | 659,194 | Shares | 2026-08-10 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $21,233,456 | 0.51% | 655,961 | Shares | 2026-08-04 | |
| Large FEDERATED HERMES, INC. Adviser | $20,559,546 | 0.49% | 635,142 | Shares | 2026-08-12 | |
| Mid Defiance ETFs, LLC Registered adviser | $19,256,200 | 0.46% | 594,878 | Shares | 2026-08-14 | |
| Large Penserra Capital Management LLC Registered adviser | $19,256,200 | 0.46% | 594,878 | Shares | 2026-08-13 | |
| Large Impax Asset Management Group plc Holding company | $19,217,356 | 0.46% | 593,678 | Shares | 2026-08-11 | |
| Large First Eagle Investment Management, LLC Registered adviser | $18,868,990 | 0.45% | 582,916 | Shares | 2026-08-24 | |
| Mid LYELL WEALTH MANAGEMENT, LP | $18,850,507 | 0.45% | 582,345 | Shares | 2026-08-05 | |
| Mega RAYMOND JAMES FINANCIAL INC | $17,401,236 | 0.42% | 537,573 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $17,309,857 | 0.42% | 534,750 | Shares | 2026-09-02 | |
| Large SEB Asset Management AB | $15,422,427 | 0.37% | 476,442 | Shares | 2026-08-04 | |
| Large Public Sector Pension Investment Board Non-US | $14,542,449 | 0.35% | 449,257 | Shares | 2026-08-13 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $13,790,945 | 0.33% | 426,041 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $13,035,881 | 0.31% | 402,715 | Shares | 2026-08-12 | |
| Mid PEREGRINE CAPITAL MANAGEMENT LLC Registered adviser | $12,178,565 | 0.29% | 376,230 | Shares | 2026-07-17 | |
| Large MARSHALL WACE, LLP Exempt adviser | $11,828,709 | 0.28% | 365,422 | Shares | 2026-08-13 | |
| Large PRUDENTIAL FINANCIAL INC Insurer | $11,806,730 | 0.28% | 364,743 | Shares | 2026-08-12 | |
| Mega DEUTSCHE BANK AG\ Non-US | $11,239,963 | 0.27% | 347,234 | Shares | 2026-08-07 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $11,152,595 | 0.27% | 344,535 | Shares | 2026-08-13 | |
| Mid Hillsdale Investment Management Inc. Registered adviser | $10,968,250 | 0.26% | 338,840 | Shares | 2026-08-12 | |
| Mega SEI INVESTMENTS CO | $10,700,032 | 0.26% | 330,554 | Shares | 2026-08-14 | |
| Large Focus Partners Wealth Registered adviser | $10,507,949 | 0.25% | 324,620 | Shares | 2026-08-12 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $10,124,138 | 0.24% | 312,763 | Shares | 2026-08-12 | |
| Mega Clearbridge Investments, LLC Registered adviser | $9,911,337 | 0.24% | 306,189 | Shares | 2026-08-13 | |
| Mega Legal & General Group Plc | $9,733,398 | 0.23% | 300,692 | Shares | 2026-08-14 | |
| Large STATE OF WISCONSIN INVESTMENT BOARD Benefit plan | $9,488,067 | 0.23% | 293,113 | Shares | 2026-08-14 | |
| Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Non-US | $9,354,930 | 0.22% | 289,000 | Shares | 2026-08-13 | |
| Large LAZARD ASSET MANAGEMENT LLC Adviser | $9,192,303 | 0.22% | 283,976 | Shares | 2026-08-14 | |
| Large HRT FINANCIAL LP | $9,149,963 | 0.22% | 282,668 | Shares | 2026-08-14 | |
| Mega VOYA INVESTMENT MANAGEMENT LLC Registered adviser | $8,683,834 | 0.21% | 268,268 | Shares | 2026-08-12 | |
| Mega Swiss National Bank | $8,503,599 | 0.20% | 262,700 | Shares | 2026-08-11 | |
| Large Trexquant Investment LP Registered adviser | $8,258,040 | 0.20% | 255,114 | Shares | 2026-08-14 | |
| Small Mirador Capital Partners LP Registered adviser | $7,906,276 | 0.19% | 368,591 | Shares | 2026-10-09 | |
| Large MACKENZIE FINANCIAL CORP Registered adviser | $7,819,005 | 0.19% | 241,551 | Shares | 2026-08-13 | |
| Mega BARCLAYS PLC Bank | $7,806,122 | 0.19% | 241,153 | Shares | 2026-08-14 | |
| Large TUDOR INVESTMENT CORP ET AL Registered adviser | $7,661,299 | 0.18% | 236,679 | Shares | 2026-08-14 | |
| Mid OP Asset Management Ltd | $7,374,857 | 0.18% | 227,830 | Shares | 2026-07-28 | |
| Micro Circumference Group LLC Registered adviser | $7,286,487 | 0.17% | 225,100 | Shares | 2026-08-14 | |
| Mega FRANKLIN RESOURCES INC Adviser | $7,281,693 | 0.17% | 224,952 | Shares | 2026-08-13 | |
| Small BROOKTREE CAPITAL MANAGEMENT Registered adviser | $7,239,097 | 0.17% | 223,636 | Shares | 2026-08-05 | |
| Mega ROYAL BANK OF CANADA Bank | $6,840,782 | 0.16% | 211,331 | Shares | 2026-08-14 | |
| Mid Edgestream Partners, L.P. | $6,696,996 | 0.16% | 206,889 | Shares | 2026-08-11 | |
| Mid Y-Intercept (Hong Kong) Ltd Exempt adviser | $6,607,629 | 0.16% | 308,048 | Shares | 2026-10-16 | |
| Small Lisanti Capital Growth, LLC | $5,926,785 | 0.14% | 183,095 | Shares | 2026-08-10 | |
| Large INTECH INVESTMENT MANAGEMENT LLC Registered adviser | $5,819,705 | 0.14% | 179,787 | Shares | 2026-08-10 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $5,713,305 | 0.14% | 176,500 | Call | 2026-08-14 | |
| Small ICON ADVISERS INC/CO Registered adviser | $5,502,900 | 0.13% | 170,000 | Shares | 2026-08-13 | |
| Mid Engineers Gate Manager LP | $5,309,489 | 0.13% | 164,025 | Shares | 2026-08-14 | |
| Small IRONWOOD INVESTMENT MANAGEMENT LLC Registered adviser | $5,239,181 | 0.13% | 161,853 | Shares | 2026-08-14 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $5,121,419 | 0.12% | 158,215 | Shares | 2026-08-24 | |
| Large CAPITAL FUND MANAGEMENT S.A. | $4,813,192 | 0.12% | 148,693 | Shares | 2026-08-13 | |
| Small Capital Advantage, Inc. Registered adviser | $4,704,156 | 0.11% | 219,308 | Shares | 2026-10-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $4,512,699 | 0.11% | 139,410 | Shares | 2026-08-14 | |
| Small Ballast Asset Management, LP | $4,477,677 | 0.11% | 138,328 | Shares | 2026-08-13 | |
| Mid SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $4,406,560 | 0.11% | 136,131 | Shares | 2026-08-14 | |
| Mega VANGUARD ASSET MANAGEMENT, Ltd | $4,399,536 | 0.11% | 135,914 | Shares | 2026-08-13 | |
| Large D.A. DAVIDSON & CO. | $4,143,360 | 0.10% | 128,000 | Shares | 2026-07-24 | |
| Mid Numerai GP LLC Registered adviser | $4,111,799 | 0.10% | 127,025 | Shares | 2026-08-14 | |
| Mega Amundi Holding company | $4,052,270 | 0.10% | 125,186 | Shares | 2026-08-11 | |
| Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. Adviser | $3,963,156 | 0.10% | 122,433 | Shares | 2026-08-14 | |
| Small Torrey Growth & Income Advisors Registered adviser | $3,755,405 | 0.09% | 116,015 | Shares | 2026-07-27 |
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