Anterix Inc. (ATEX) ownership: Top institutional holder: Owl Creek Asset Management, L.P. ($206.68M). Insider activity: Net Seller (1 buys, 19 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| Owl Creek Asset Management, L.P. | 5411776.00 | $206.68M | 2026-03-31 |
| Heard Capital LLC | 1716738.00 | $65.56M | 2026-03-31 |
| BlackRock, Inc. | 1007143.00 | $38.46M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 573847.00 | $21.92M | 2026-03-31 |
| VANGUARD GROUP INC | 931305.00 | $20.33M | 2025-12-31 |
| QVT Financial LP | 503941.00 | $19.25M | 2026-03-31 |
| PLUSTICK MANAGEMENT LLC | 499596.00 | $19.08M | 2026-03-31 |
| GAMCO INVESTORS, INC. ET AL | 425820.00 | $16.26M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-22 | |
| Buy | null | 2026-05-22 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-20 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.