Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in EXTR held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 20.2M | $304.5M | +3.8% | 15.037% | 0.01% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 13.6M | $204.7M | — | 10.110% | 0.01% |
| 3 | STATE STREET CORP | 6.4M | $97.3M | +13.9% | 4.804% | 0.00% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 5.8M | $87.2M | — | 4.306% | 0.00% |
| 5 | PARADIGM CAPITAL MANAGEMENT INC/NY | 5.2M | $78.9M | +5.3% | 3.899% | 3.02% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 3.3M | $50.2M | +3.4% | 2.476% | 0.00% |
| 7 | FMR LLC | 3.3M | $50.1M | +10.8% | 2.476% | 0.00% |
| 8 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 3.2M | $49.0M | +7.6% | 2.419% | 0.03% |
| 9 | GOLDMAN SACHS GROUP INC | 3.1M | $47.2M | +12.9% | 2.331% | 0.01% |
| 10 | Trigran Investments, Inc. | 2.8M | $42.9M | +24.6% | 2.121% | 10.27% |
| 11 | Alyeska Investment Group, L.P. | 2.8M | $42.0M | -6.2% | 2.075% | 0.12% |
| 12 | LOOMIS SAYLES & CO L P | 2.7M | $41.0M | +9.1% | 2.023% | 0.06% |
| 13 | BARROW HANLEY MEWHINNEY & STRAUSS LLC | 2.7M | $40.0M | -6.0% | 1.975% | 0.13% |
| 14 | SOUTHERNSUN ASSET MANAGEMENT, LLC | 2.3M | $34.7M | +16.6% | 1.711% | 5.02% |
| 15 | RENAISSANCE TECHNOLOGIES LLC | 2.1M | $31.3M | +32.6% | 1.546% | 0.05% |
| 16 | MORGAN STANLEY | 1.8M | $27.1M | +0.5% | 1.337% | 0.00% |
| 17 | ALLIANCEBERNSTEIN L.P. | 1.6M | $26.7M | +14.0% | 1.194% | 0.01% |
| 18 | VICTORY CAPITAL MANAGEMENT INC | 1.7M | $25.5M | -58.4% | 1.258% | 0.02% |
| 19 | Nuveen, LLC | 1.6M | $23.8M | -17.3% | 1.174% | 0.01% |
| 20 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.5M | $22.5M | +1.2% | 1.113% | 0.00% |
| 21 | D. E. Shaw & Co., Inc. | 1.5M | $22.2M | +2.6% | 1.095% | 0.02% |
| 22 | NORTHERN TRUST CORP | 1.4M | $21.1M | +2.5% | 1.044% | 0.00% |
| 23 | Shannon River Fund Management LLC | 1.3M | $19.8M | -31.1% | 0.978% | 3.78% |
| 24 | FEDERATED HERMES, INC. | 1.1M | $15.9M | +13.2% | 0.785% | 0.03% |
| 25 | Impax Asset Management Group plc | 965K | $14.6M | +2.1% | 0.719% | 0.10% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in EXTR — a direct measure of their conviction.
Filings activity in EXTR during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 289 | 5.6% | 44.07% | 5.80 pp | $1.84B | 12% |
| Q4 2025 | 306 | +1.7% | 49.87% | 9.36 pp | $2.08B | 16% |
| Q3 2025 | 301 | +4.2% | 59.23% | +9.10 pp | $2.47B | +18% |
| Q2 2025 | 289 | +9.1% | 50.13% | +12.38 pp | $2.09B | +33% |
| Q1 2025 | 265 | 2.2% | 37.75% | 73.99 pp | $1.58B | 66% |
| Q4 2024 | 271 | +6.7% | 111.74% | +70.09 pp | $4.67B | +168% |
| Q3 2024 | 254 | +0.8% | 41.65% | +3.77 pp | $1.74B | +10.0% |
| Q2 2024 | 252 | — | 37.88% | — | $1.58B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying EXTR stock.
Based on Q1 2026 13F filings, institutional ownership of Extreme Networks, Inc. stands at 44.1%, held across 289 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of EXTR, with approximately 20,189,882 shares worth $0.30B as of Q1 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of EXTR, including RENAISSANCE TECHNOLOGIES LLC.
Our composite Smart Money Score for EXTR is 33 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
45 institutions opened new positions in EXTR during Q1 2026, while 62 fully exited. 82 added to existing positions and 160 trimmed.
EXTR institutional ownership fell by 5.80 percentage points quarter-over-quarter, with a net change of -17 holders.
The top 10 institutions account for 55.0% of all reported 13F value in EXTR, and the top 25 account for 77.1%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Extreme Networks, Inc. (EXTR) Institutional Ownership