AnterixATEX
13F holders, Q1 2026 (March 31)132holders +15
34new positions
19sold out
5famous investors
$38.18avg. 13F price*
At the end of Q1 2026, 132 institutions reported holding Anterix Inc. (ATEX) in their 13F filings, up 15 from Q4 2025. 34 opened new positions and 19 sold out. The largest holders were Owl Creek Asset Management, L.P. ($206.7M), Heard Capital LLC ($65.6M) and BlackRock, Inc. ($38.5M). 5 famous investors held it, including Mario Gabelli (0.2% of GAMCO Investors's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Anterix Inc.
- CUSIP
- 03676C100
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 34 | $58.5M |
| Exits | 19 | $29.8M |
All 13F filers, Q4 2025 → Q1 2026: 2,738,061 shares bought and 1,890,397 shares sold, net +847,664 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 132 holders
| Owl Creek Asset Management, L.P. | 39.93% | No change | 5,411,776 | $206.7M |
| Heard Capital LLC | 3.39% | No change | 1,716,738 | $65.6M |
| BlackRock, Inc. | 0.00% | Reduce -1.1% | 1,007,143 | $38.5M |
| Vanguard Capital Management LLC | 0.00% | — | 573,847 | $21.9M |
| QVT Financial LP | 1.54% | No change | 503,941 | $19.2M |
| Plustick Management LLC | 9.21% | New | 499,596 | $19.1M |
| GAMCO Investors | 0.16% | Add +0.8% | 425,820 | $16.3M |
| Dimensional Fund Advisors LP | 0.00% | Add +30.8% | 424,856 | $16.2M |
| Jane Street Group, LLC | 0.02% | Add +164.7% | 420,857 | $16.1M |
| State Street Corp. | 0.00% | Add +16.2% | 387,918 | $14.8M |
| Geode Capital Management, LLC | 0.00% | Add +3.9% | 374,301 | $14.3M |
| Garnet Equity Capital Holdings, Inc. | 7.45% | Reduce -13.6% | 343,496 | $13.1M |
| Millennium Management | 0.01% | Reduce -30.0% | 307,922 | $11.8M |
| Gabelli Funds LLC | 0.07% | Reduce -12.8% | 265,800 | $10.2M |
| Potrero Capital Research LLC | 5.38% | New | 229,561 | $8.8M |
| AYAL Capital Advisors Ltd | 3.85% | Reduce -25.6% | 197,119 | $7.5M |
| HRT Financial LP | 0.02% | Add +305.9% | 174,925 | $6.7M |
| Potomac Capital Management, Inc. | 5.80% | Add +7.7% | 173,802 | $6.6M |
| DG Capital Management, LLC | 3.25% | Add +691.8% | 168,217 | $6.4M |
| Bank of America Corp. | 0.00% | Add +17.2% | 167,781 | $6.4M |
| Vanguard Portfolio Management LLC | 0.00% | — | 164,542 | $6.3M |
| Goldman Sachs Group Inc. | 0.00% | Add +29.8% | 161,786 | $6.2M |
| Citadel Advisors | 0.00% | Add +48.7% | 161,163 | $6.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +1.9% | 141,388 | $5.4M |
| FMR LLC | 0.00% | Add +165.1% | 135,295 | $5.2M |
| Panoramic Capital, LLC | 3.62% | New | 135,000 | $5.2M |
| CenterBook Partners LP | 0.26% | New | 127,674 | $4.9M |
| Citigroup Inc. | 0.00% | Add +18986.2% | 119,861 | $4.6M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 119,456 | $4.6M |
| Northern Trust Corp. | 0.00% | Add +2.9% | 117,610 | $4.5M |
| Kirr Marbach & Co. LLC | 0.79% | Add +13.3% | 113,814 | $4.3M |
| Ardsley Advisory Partners LP | 0.64% | New | 110,000 | $4.2M |
| Morgan Stanley | 0.00% | Reduce -6.2% | 102,658 | $3.9M |
| Beartown Capital Management, LLC | 3.01% | Reduce -31.0% | 100,000 | $3.8M |
| Gratia Capital, LLC | 3.17% | New | 87,500 | $3.3M |
| Atom Investors LP | 0.23% | Add +1.3% | 84,179 | $3.2M |
| OpenArc Corporate Advisory, LLC | 0.04% | New | 73,848 | $2.8M |
| Bank of New York Mellon Corp | 0.00% | Reduce -1.4% | 67,836 | $2.6M |
| Waterfront Wealth Inc. | 0.42% | Add +23.3% | 59,955 | $2.3M |
| Squarepoint Ops LLC | 0.00% | Add +12.5% | 59,736 | $2.3M |
| Marble Bar Asset Management LLP | 2.01% | Add +303.4% | 53,509 | $2.0M |
| Teton Advisors, LLC | 1.42% | No change | 53,000 | $2.0M |
| Resolute Capital Asset Partners LLC | 1.03% | New | 51,106 | $2.0M |
| UBS Group AG | 0.00% | Reduce -1.9% | 47,875 | $1.8M |
| 683 Capital Management, LLC | 0.17% | New | 46,000 | $1.8M |
| Simplex Trading, LLC | 0.05% | Add +94.0% | 43,750 | $1.7M |
| Campbell & CO Investment Adviser LLC | 0.09% | Add +47.1% | 40,460 | $1.5M |
| Trexquant Investment LP | 0.01% | Reduce -13.4% | 40,175 | $1.5M |
| Susquehanna International Group, LLP | 0.00% | Add +38.5% | 39,798 | $1.5M |
| Creative Planning | 0.00% | Add +3.9% | 31,964 | $1.2M |
| IMC-Chicago, LLC | 0.02% | Add +127.0% | 30,363 | $1.2M |
| Schonfeld Strategic Advisors LLC | 0.01% | Reduce -53.1% | 23,211 | $886K |
| Nuveen, LLC | 0.00% | Reduce -57.0% | 22,875 | $874K |
| Proficio Capital Partners LLC | 0.04% | No change | 20,000 | $764K |
| Apis Capital Advisors, LLC | 0.12% | New | 19,740 | $754K |
| Woodmont Investment Counsel LLC | 0.04% | Add +5.7% | 18,307 | $699K |
| Virtu Financial LLC | 0.03% | New | 17,885 | $683K |
| GWN Securities Inc. | 0.12% | New | 16,468 | $629K |
| STRS Ohio | 0.00% | Reduce -40.8% | 15,700 | $600K |
| Quantinno Capital Management LP | 0.00% | Add +64.6% | 15,619 | $596K |
| Quadrature Capital Ltd | 0.01% | New | 14,502 | $554K |
| Rhumbline Advisers | 0.00% | Reduce -5.4% | 14,115 | $539K |
| Inspire Investing, LLC | 0.03% | New | 13,309 | $508K |
| State of Wisconsin Investment Board | 0.00% | Reduce -28.0% | 13,269 | $507K |
| Jefferson Bridge Capital, LLC | 0.49% | No change | 12,950 | $495K |
| FNY Investment Advisers, LLC | 0.19% | New | 11,221 | $428K |
| AQR Capital Management | 0.00% | New | 11,100 | $424K |
| Deutsche Bank AG | 0.00% | Add +120.2% | 9,444 | $361K |
| Toronto Dominion Bank | 0.00% | Add +111.6% | 9,100 | $348K |
| J. Goldman & Co LP | 0.02% | New | 9,033 | $345K |
| ExodusPoint Capital Management, LP | 0.00% | New | 8,794 | $336K |
| Quantbot Technologies LP | 0.01% | New | 8,619 | $329K |
| Covestor Ltd | 0.23% | Reduce -29.3% | 8,507 | $325K |
| T. Rowe Price Associates Inc. | 0.00% | New | 7,955 | $304K |
| Gem Investment Advisors, LLC | 0.27% | New | 7,183 | $274K |
| Vanguard Global Advisers, LLC | 0.00% | — | 6,966 | $266K |
| Alliancebernstein L.P. | 0.00% | Reduce -21.4% | 12,130 | $265K |
| American Century Companies Inc. | 0.00% | New | 6,661 | $254K |
| MetLife Investment Management, LLC | 0.00% | Reduce -2.1% | 6,602 | $252K |
| Prudential Financial Inc. | 0.00% | New | 6,457 | $247K |
| Central Pacific Bank - Trust Division | 0.03% | No change | 6,000 | $229K |
| Wells Fargo & Company | 0.00% | Reduce -52.3% | 5,903 | $225K |
| D. E. Shaw & Co. | 0.00% | Reduce -90.8% | 5,696 | $218K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +4.0% | 5,425 | $207K |
| Brooklyn Investment Group | 0.01% | New | 5,284 | $202K |
| JPMorgan Chase & Co. | 0.00% | Add +8.6% | 5,076 | $185K |
| Virtus Advisers, LLC | 0.06% | No change | 3,500 | $134K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 3,069 | $117K |
| Royal Bank of Canada | 0.00% | Add +151.2% | 3,034 | $116K |
| Crewe Advisors LLC | 0.01% | New | 3,000 | $115K |
| New York State Common Retirement Fund | 0.00% | No change | 2,709 | $103K |
| BNP Paribas Financial Markets | 0.00% | Reduce -0.6% | 2,477 | $95K |
| Legal & General Group Plc | 0.00% | Reduce -6.2% | 2,396 | $92K |
| Barclays PLC | 0.00% | Reduce -88.5% | 2,160 | $82K |
| Fifth Third Bancorp | 0.00% | New | 1,685 | $64K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -11.7% | 1,134 | $43K |
| IFP Advisors, Inc | 0.00% | New | 1,078 | $41K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 1,033 | $39K |
| Parallel Advisors, LLC | 0.00% | Add +63.7% | 933 | $36K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +40.8% | 856 | $33K |
| Destiny Wealth Partners, LLC | 0.00% | New | 775 | $30K |
| Pinnacle Wealth Planning Services, Inc. | 0.00% | Add +101.3% | 612 | $23K |
| California State Teachers Retirement System | 0.00% | Reduce -12.1% | 609 | $23K |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 568 | $22K |
| Cwm, LLC | 0.00% | Add +59.0% | 512 | $20K |
| Signaturefd, LLC | 0.00% | Add +79.6% | 449 | $17K |
| Versant Capital Management, Inc | 0.00% | New | 405 | $15K |
| Allworth Financial LP | 0.00% | Add +22.8% | 242 | $9K |
| US Bancorp \de | 0.00% | Add +96.5% | 224 | $9K |
| PNC Financial Services Group, Inc. | 0.00% | Add +9.3% | 211 | $8K |
| Nisa Investment Advisors, LLC | 0.00% | No change | 203 | $8K |
| Osaic Holdings, Inc. | 0.00% | Add +15.0% | 192 | $7K |
| Private Wealth Management Group, LLC | 0.00% | No change | 185 | $7K |
| Los Angeles Capital Management LLC | 0.00% | No change | 141 | $5K |
| Farther Finance Advisors, LLC | 0.00% | Add +7.3% | 132 | $5K |
| Optiver Holding B.V. | 0.00% | Reduce -19.4% | 100 | $4K |
| Sterling Capital Management LLC | 0.00% | No change | 73 | $3K |
| GAMMA Investing LLC | 0.00% | Add +857.1% | 67 | $3K |
| WPG Advisers, LLC | 0.00% | No change | 55 | $2K |
| Federated Hermes, Inc. | 0.00% | Add +163.2% | 50 | $2K |
| Root Financial Partners, LLC | 0.00% | New | 47 | $2K |
| MassMutual Private Wealth & Trust, FSB | 0.00% | No change | 37 | $1K |
| Blue Trust, Inc. | 0.00% | No change | 27 | $1K |
| North Star Investment Management Corp. | 0.00% | New | 22 | $840 |
| MAI Capital Management | 0.00% | New | 20 | $764 |
| Essential Partners LLC | 0.00% | Add +54.5% | 17 | $649 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | No change | 13 | $496 |
| Trust Co | 0.00% | No change | 12 | $458 |
| EverSource Wealth Advisors, LLC | 0.00% | Add +125.0% | 9 | $345 |
| Sunbelt Securities, Inc. | 0.00% | New | 3 | $115 |
| Transamerica Financial Advisors, LLC | 0.00% | No change | 3 | $114 |
| Hughes Financial Services, LLC | 0.00% | No change | 2 | $76 |
"% of holder's portfolio" is ATEX's weight in each manager's 13F, not the share of Anterix Inc. the manager owns.