Anterix Inc.
ATEX- Exchange
- Nasdaq
- Industry
- Telephone Communications (No Radiotelephone)
- SEC CIK
- 0001304492
In the last 90 days, Anterix Inc. insiders filed 0 open-market purchases and 10 sales; 171 institutions reported holding it in 13F filings for Q2 2026, worth $1.97B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Anterix Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 132
- +18 vs. Q4 2025
- Shares held
- 16.9M
- +1.70M (+11.2%) vs. Q4 2025
- Total value
- $646.5M
- +$313.9M (+94.4%) vs. Q4 2025
- New holders
- 38
- 46 more added
- Sold out
- 20
- 26 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ATEX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 171 | $1.97B |
| Q1 2026 | 132 | $646.5M |
| Q4 2025 | 117 | $353.3M |
| Q3 2025 | 111 | $341.2M |
| Q2 2025 | 112 | $431.0M |
| Q1 2025 | 130 | $598.6M |
| Q4 2024 | 116 | $490.5M |
| Q3 2024 | 129 | $593.7M |
| Q2 2024 | 115 | $593.3M |
| Q1 2024 | 98 | $493.3M |
| Q4 2023 | 93 | $492.4M |
| Q3 2023 | 98 | $472.2M |
| Q2 2023 | 95 | $491.3M |
| Q1 2023 | 88 | $515.5M |
| Q4 2022 | 92 | $503.6M |
| Q3 2022 | 100 | $567.4M |
| Q2 2022 | 95 | $620.9M |
| Q1 2022 | 109 | $881.6M |
| Q4 2021 | 108 | $892.1M |
| Q3 2021 | 108 | $920.4M |
| Q2 2021 | 107 | $912.0M |
| Q1 2021 | 97 | $731.0M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Anterix Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| RWM Asset Management, LLC | 775 | $29.6K | 0.00% | +775 | New |
| Pinnacle Wealth Planning Services, Inc. | 612 | $23.4K | 0.00% | +308+101.3% | Added |
| California State Teachers Retirement System | 609 | $23.3K | 0.00% | −84−12.1% | Reduced |
| Caitong International Asset Management Co., Ltd | 568 | $21.7K | 0.00% | +568 | New |
| CWM, LLC | 512 | $19.6K | 0.00% | +190+59.0% | Added |
| Signaturefd, LLC | 449 | $17.1K | 0.00% | +199+79.6% | Added |
| Versant Capital Management, Inc | 405 | $15.5K | 0.00% | +405 | New |
| Allworth Financial LP | 242 | $9.24K | 0.00% | +45+22.8% | Added |
| US Bancorp | 224 | $8.55K | 0.00% | +110+96.5% | Added |
| The PNC Financial Services Group, Inc. | 211 | $8.06K | 0.00% | +18+9.3% | Added |
| Nisa Investment Advisors, LLC | 203 | $7.75K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 192 | $7.33K | 0.00% | +25+15.0% | Added |
| Private Wealth Management Group, LLC | 185 | $7.07K | 0.00% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 141 | $5.38K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 132 | $5.16K | 0.00% | +9+7.3% | Added |
| Optiver Holding B.V. | 100 | $3.82K | 0.00% | −24−19.4% | Reduced |
| Sterling Capital Management LLC | 73 | $2.79K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 67 | $2.56K | 0.00% | +60+857.1% | Added |
| WPG Advisers, LLC | 55 | $2.10K | 0.00% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 50 | $1.91K | 0.00% | +31+163.2% | Added |
| Root Financial Partners, LLC | 47 | $1.79K | 0.00% | +47 | New |
| Massmutual Trust Co FSB | 37 | $1.41K | 0.00% | 00.0% | Unchanged |
| Ronald Blue Trust, Inc. | 27 | $1.03K | 0.00% | 00.0% | Unchanged |
| North Star Investment Management Corp. | 22 | $840 | 0.00% | +22 | New |
| MAI Capital Management | 20 | $764 | 0.00% | +20 | New |
| Essential Partners LLC | 17 | $649 | 0.00% | +6+54.5% | Added |
| UBS Asset Management Americas Inc | 13 | $496 | 0.00% | 00.0% | Unchanged |
| Trust Co | 12 | $458 | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 9 | $345 | 0.00% | +5+125.0% | Added |
| Sunbelt Securities, Inc. | 3 | $115 | 0.00% | +3 | New |
| Transamerica Financial Advisors, Inc. | 3 | $114 | 0.00% | 00.0% | Unchanged |
| Hughes Financial Services, LLC | 2 | $76 | 0.00% | 00.0% | Unchanged |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −454,508−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −291,255−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −124,943−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −124,646−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −100,145−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −72,976−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −48,509−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −33,401−100.0% | Sold out |
| Gabelli & Co Investment Advisers, Inc. | 0 | $0 | 0.00% | −30,650−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −17,740−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −15,012−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −14,255−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −12,600−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −10,493−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −8,802−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −8,675−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −6,175−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −354−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −188−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −89−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Sandia Investment Management LP | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |