| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Heard Capital LLC | 9.4% | $51,528,035 | 1,741,989 | Heard Capital LLC | 28 Feb 2025 | |||
| BlackRock, Inc. | 5.1% | $20,414,578 | 950,842 | BlackRock, Inc. | 30 Sep 2025 | |||
| VANGUARD GROUP INC | 5% | $20,330,854 | 931,305 | The Vanguard Group | 31 Dec 2025 | |||
| DG Capital Management, LLC | 4% | -24% | $15,985,360 | -$4,963,757 | 744,544 | -24% | DG Capital Management, LLC | 30 Sep 2025 |
As of 31 Dec 2025, 116 institutional investors reported holding 16,180,534 shares of Anterix Inc. - Common Stock (ATEX). This represents 86% of the company’s total 18,738,531 outstanding shares.
The largest institutional shareholders of Anterix Inc. - Common Stock (ATEX) together control 77% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Owl Creek Asset Management, L.P. | 29% | 5,411,776 | 0% | 14% | $118,139,070 |
| Heard Capital LLC | 9.2% | 1,716,738 | 0% | 1.8% | $37,476,391 |
| BlackRock, Inc. | 5.4% | 1,018,275 | -1.3% | 0% | $22,228,954 |
| VANGUARD GROUP INC | 5% | 931,305 | -7.6% | 0% | $20,330,388 |
| QVT Financial LP | 2.7% | 503,941 | 0% | 1% | $11,001,032 |
| Jefferies Financial Group Inc. | 2.4% | 454,508 | 0.08% | $9,921,910 | |
| MILLENNIUM MANAGEMENT LLC | 2.3% | 439,946 | +1153% | 0.01% | $9,604,021 |
| GAMCO INVESTORS, INC. ET AL | 2.3% | 422,470 | +32% | 0.09% | $9,222,520 |
| GARNET EQUITY CAPITAL HOLDINGS, INC. | 2.1% | 397,395 | 0% | 4.3% | $8,675,133 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9% | 360,139 | -0.33% | 0% | $7,863,736 |
| STATE STREET CORP | 1.8% | 333,788 | +5.4% | 0% | $7,286,592 |
| DIMENSIONAL FUND ADVISORS LP | 1.7% | 324,923 | +4.4% | 0% | $7,092,536 |
| GABELLI FUNDS LLC | 1.6% | 304,907 | +6.5% | 0.05% | $6,656,120 |
| MARSHALL WACE, LLP | 1.6% | 291,255 | +1.6% | 0.01% | $6,358,098 |
| AYAL Capital Advisors Ltd | 1.4% | 265,000 | +27% | 3.2% | $5,784,950 |
| Potomac Capital Management, Inc. | 0.86% | 161,400 | 0% | 2.9% | $3,523,362 |
| JANE STREET GROUP, LLC | 0.85% | 159,014 | +276% | 0% | $3,471,275 |
| Beartown Capital Management, LLC | 0.77% | 145,000 | 0% | 2.5% | $3,165,350 |
| BANK OF AMERICA CORP /DE/ | 0.76% | 143,124 | +4.9% | 0% | $3,124,397 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.74% | 138,677 | +0.43% | 0% | $3,027,319 |
| TUDOR INVESTMENT CORP ET AL | 0.67% | 124,943 | -2.9% | 0.01% | $2,727,506 |
| Qube Research & Technologies Ltd | 0.67% | 124,646 | -39% | 0% | $2,721,022 |
| GOLDMAN SACHS GROUP INC | 0.67% | 124,630 | -24% | 0% | $2,720,673 |
| NORTHERN TRUST CORP | 0.61% | 114,262 | -2.3% | 0% | $2,494,339 |
| MORGAN STANLEY | 0.58% | 109,445 | +51% | 0% | $2,389,185 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 16,180,534 | $353,310,211 | -$760,647 | $21.83 | 116 |
| 2025 Q3 | 15,892,445 | $341,210,062 | -$21,494,095 | $21.47 | 110 |
| 2025 Q2 | 16,798,194 | $430,873,693 | +$5,778,849 | $25.65 | 109 |
| 2025 Q1 | 16,354,227 | $598,597,088 | +$24,643,665 | $36.60 | 128 |
| 2024 Q4 | 15,990,167 | $490,412,835 | +$4,179,537 | $30.67 | 113 |
| 2024 Q3 | 15,762,630 | $593,586,930 | +$33,544,074 | $37.66 | 127 |
| 2024 Q2 | 14,976,662 | $592,922,823 | +$12,607,148 | $39.59 | 112 |
| 2024 Q1 | 14,671,486 | $493,164,901 | -$3,442,304 | $33.61 | 97 |
| 2023 Q4 | 14,774,749 | $492,294,457 | -$2,514,906 | $33.32 | 91 |
| 2023 Q3 | 14,875,879 | $466,805,252 | -$14,453,049 | $31.38 | 96 |
| 2023 Q2 | 15,334,359 | $485,963,452 | -$3,134,853 | $31.69 | 93 |
| 2023 Q1 | 15,429,877 | $509,799,258 | -$1,255,532 | $33.04 | 86 |
| 2022 Q4 | 15,489,687 | $498,309,599 | -$9,985,557 | $32.17 | 91 |
| 2022 Q3 | 15,717,231 | $561,424,047 | +$25,584,069 | $35.72 | 96 |
| 2022 Q2 | 14,954,246 | $614,165,320 | -$5,584,480 | $41.07 | 90 |
| 2022 Q1 | 15,103,375 | $874,447,504 | -$6,381,270 | $57.90 | 105 |
| 2021 Q4 | 15,187,749 | $892,021,662 | -$15,273,036 | $58.76 | 102 |
| 2021 Q3 | 15,139,014 | $918,125,236 | -$783,490 | $60.70 | 105 |
| 2021 Q2 | 15,202,979 | $912,028,428 | -$9,533,969 | $59.99 | 106 |
| 2021 Q1 | 15,500,931 | $731,032,284 | +$49,980,240 | $47.16 | 96 |
| 2020 Q4 | 16,188,659 | $608,687,656 | +$12,279,881 | $37.60 | 86 |
| 2020 Q3 | 15,950,453 | $521,738,240 | -$14,474,223 | $32.71 | 92 |
| 2020 Q2 | 16,236,389 | $736,140,456 | -$10,250,900 | $45.34 | 101 |
| 2020 Q1 | 16,462,443 | $751,832,615 | -$24,859,764 | $45.67 | 80 |
| 2019 Q4 | 16,221,458 | $700,437,489 | +$111,171,052 | $43.21 | 76 |
| 2019 Q3 | 13,668,174 | $494,780,224 | +$492,846,807 | $36.20 | 71 |
| 2019 Q2 | 53,408 | $2,511,000 | +$2,511,000 | $47.02 | 2 |