Anterix
ATEX · NASDAQ
$79.44+$1.57 (+2.02%)TodayMarket closed ·
Prev close $77.87
Who owns ATEX
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 72.1% of ATEX’s shares.
- Owl Creek Asset Management, L.P.27.8%
- T. Rowe Price Investment Management, Inc.12.0%
- Heard Capital LLC8.8%
- BlackRock Institutional Trust Company, N.A.4.8%
- Next 6 largest institutions18.7%
- All other shareholders27.9%
| Holder | Shares | % of shares |
|---|---|---|
| Owl Creek Asset Management, L.P. | 5.41M | 27.75% |
| T. Rowe Price Investment Management, Inc. | 2.35M | 12.04% |
| Heard Capital LLC | 1.72M | 8.80% |
| BlackRock Institutional Trust Company, N.A. | 933.62K | 4.79% |
| T. Rowe Price Associates, Inc. | 730.59K | 3.75% |
| Gabelli Funds, LLC | 694.02K | 3.56% |
| Janus Henderson Investors | 662.41K | 3.40% |
| Vanguard Capital Management, LLC | 553.00K | 2.84% |
| PlusTick Management LLC | 520.00K | 2.67% |
| State Street Investment Management (US) | 495.95K | 2.54% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| T. Rowe Price Small Cap Stock Fund | 759.20K | 3.89% |
| Janus Henderson Contrarian Fund | 634.83K | 3.26% |
| T. Rowe Price New Horizons Fund | 470.80K | 2.41% |
| T. Rowe Price Institutional Small-Cap Stock Fund | 410.89K | 2.11% |
| Vanguard Total Stock Market Index Fund | 327.99K | 1.68% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $36.06M (47 trades) of ATEX on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Marquez Elena | Option exercise | 1.23K | — |
| Marquez Elena | Sale | 210 | $17.20K |
| Marquez Elena | Sale | 1.02K | $81.59K |
| Marquez Elena | Option exercise | 1.23K | $49.08K |
| Marquez Elena | Sale | 100 | $8.25K |
| Marquez Elena | Sale | 400 | $32.72K |
| Marquez Elena | Sale | 3.25K | $260.85K |
| Marquez Elena | Tax withholding | 473 | $39.89K |
| Marquez Elena | Tax withholding | 1.32K | $108.32K |
| Lang Scott A. | Sale | 15.00K | $1.20M |
Short interest
Settled Sep 30, 2026
- Shares short
- 1.66M
- Days to cover
- 5.60
- % of shares outstanding
- 8.49%
- Average daily volume
- 295.77K
- Change since last report
- +0.5%
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