Security record · archived quarter
ATEX
Anterix Inc. · Communication Services · Telecommunications Services
56Tracked holders
0Δ holders
6.02MShares held
$131.47MReported value
+1New positions
−1Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow +2.3% · net new positions 0.0% · formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 71 | +19 | 5.99M | $615.39M | +20 | −1 |
| Q1 2026 | 54 | -2 | 5.69M | $217.28M | +5 | −7 |
| Q4 2025 | 56 | 0 | 6.02M | $131.47M | +1 | −1 |
| Q3 2025 | 14 | +1 | 4.16M | $89.22M | +1 | n/a |
| Q2 2025 | 10 | -1 | 4.26M | $109.24M | n/a | −1 |
| Q1 2025 | 8 | -1 | 1.63M | $59.82M | n/a | −1 |
| Q4 2024 | 9 | +1 | 1.39M | $42.60M | +1 | n/a |
| Q3 2024 | 7 | -1 | 1.10M | $41.51M | n/a | −1 |
| Q2 2024 | 8 | n/a | 837.23K | $33.15M | n/a | n/a |
Who holds it · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 1.02M | -1.3% | $22.23M | 0.0% | ▼ Trim | 3 | SEC ↗ ×10 |
| 2 | The Vanguard Group ✦ (passive) | 931.30K | -7.6% | $20.33M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 3 | Millennium Management ✦ | 439.95K | +1153.1% | $9.60M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 4 | GAMCO Investors ✦ | 422.47K | +32.0% | $9.22M | 0.1% | ▲ Add | 7 | SEC ↗ |
| 5 | Geode Capital Management ✦ (passive) | 360.14K | -0.3% | $7.86M | 0.0% | ▼ Trim | 7 | SEC ↗ ×2 |
| 6 | State Street Global Advisors ✦ (passive) | 333.79K | +5.4% | $7.29M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 7 | Dimensional Fund Advisors Lp | 324.92K | n/a | $7.09M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 8 | Marshall Wace ✦ | 291.25K | +1.6% | $6.36M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 9 | Jane Street Group, Llc | 159.01K | n/a | $3.47M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 10 | Bank Of America Corp /De/ | 143.12K | n/a | $3.12M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 11 | Charles Schwab Investment… | 138.68K | n/a | $3.03M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | Tudor Investment Corp Et Al | 124.94K | n/a | $2.73M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | Qube Research & Technologies Ltd | 124.65K | n/a | $2.72M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | Goldman Sachs Group ✦ | 124.63K | -23.8% | $2.72M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 15 | Northern Trust Corp | 114.26K | n/a | $2.49M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 16 | Morgan Stanley ✦ | 109.44K | +51.1% | $2.39M | 0.0% | ▲ Add | 2 | SEC ↗ ×7 |
| 17 | Citadel Advisors ✦ | 108.38K | -2.4% | $2.37M | 0.0% | ▼ Trim | 7 | SEC ↗ ×2 |
| 18 | Man Group plc | 100.14K | n/a | $2.19M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | Bank of New York Mellon Corp | 68.79K | n/a | $1.50M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 20 | D. E. Shaw & Co. ✦ | 61.77K | -52.9% | $1.35M | 0.0% | ▼ Trim | 7 | SEC ↗ ×2 |
| 21 | Nuveen, LLC | 53.16K | n/a | $1.16M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 22 | Squarepoint Ops LLC | 53.12K | n/a | $1.16M | 0.0% | n/c | 1 | SEC ↗ |
| 23 | Fidelity (FMR) ✦ | 51.04K | -82.3% | $1.11M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 24 | UBS Group AG | 48.79K | n/a | $1.07M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 25 | Hrt Financial Lp | 43.09K | n/a | $940,000 | 0.0% | n/c | 1 | SEC ↗ |
| 26 | Arrowstreet Capital ✦ | 33.40K | New | $729,144 | 0.0% | New | 1 | SEC ↗ |
| 27 | Creative Planning | 30.78K | n/a | $671,906 | 0.0% | n/c | 1 | SEC ↗ |
| 28 | Susquehanna International Group, Llp | 28.74K | n/a | $627,460 | 0.0% | n/c | 1 | SEC ↗ |
| 29 | Simplex Trading, Llc | 22.55K | n/a | $492,266 | 0.0% | n/c | 1 | SEC ↗ |
| 30 | Barclays Plc | 18.79K | n/a | $410,164 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 31 | State Of Wisconsin Investment Board | 18.43K | n/a | $402,371 | 0.0% | n/c | 1 | SEC ↗ |
| 32 | Balyasny Asset Management L.P. | 17.74K | n/a | $387,264 | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Alliancebernstein L.P. | 15.43K | n/a | $336,837 | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Rhumbline Advisers | 14.92K | n/a | $325,651 | 0.0% | n/c | 1 | SEC ↗ |
| 35 | IMC-Chicago, LLC | 13.38K | n/a | $292,020 | 0.0% | n/c | 1 | SEC ↗ |
| 36 | Wells Fargo & Company/Mn | 12.37K | n/a | $270,081 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 37 | Quantinno Capital Management LP | 9.49K | n/a | $207,101 | 0.0% | n/c | 1 | SEC ↗ |
| 38 | Group One Trading Llc | 6.17K | n/a | $134,800 | 0.0% | n/c | 1 | SEC ↗ |
| 39 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 5.21K | n/a | $113,822 | 0.0% | n/c | 1 | SEC ↗ |
| 40 | JPMorgan Chase ✦ | 4.67K | -53.2% | $102,012 | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 41 | Toronto Dominion Bank | 4.30K | n/a | $93,869 | 0.0% | n/c | 1 | SEC ↗ |
| 42 | Deutsche Bank Ag\ | 4.29K | n/a | $93,629 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 43 | New York State Common Retirement… | 2.71K | n/a | $59,137 | 0.0% | n/c | 1 | SEC ↗ |
| 44 | Legal & General Group Plc | 2.55K | n/a | $55,732 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 45 | Bnp Paribas Financial Markets | 2.49K | n/a | $54,379 | 0.0% | n/c | 1 | SEC ↗ |
| 46 | Russell Investments Group, Ltd. | 1.28K | n/a | $28,030 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 47 | Royal Bank Of Canada | 1.21K | n/a | $26,000 | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 48 | California State Teachers… | 693 | n/a | $15,128 | 0.0% | n/c | 1 | SEC ↗ |
| 49 | Citigroup Inc | 628 | n/a | $13,710 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 50 | Cwm, Llc | 322 | n/a | $7,000 | 0.0% | n/c | 1 | SEC ↗ |
| 51 | Pnc Financial Services Group, Inc. | 193 | n/a | $4,213 | 0.0% | n/c | 1 | SEC ↗ |
| 52 | Osaic Holdings, Inc. | 167 | n/a | $3,645 | 0.0% | n/c | 1 | SEC ↗ |
| 53 | Optiver Holding B.V. | 124 | n/a | $2,707 | 0.0% | n/c | 1 | SEC ↗ |
| 54 | Us Bancorp \De\ | 114 | n/a | $2,489 | 0.0% | n/c | 1 | SEC ↗ |
| 55 | Federated Hermes, Inc. | 19 | n/a | $415 | 0.0% | n/c | 1 | SEC ↗ |
| 56 | UBS AM, a distinct business unit of… | 13 | n/a | $284 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Arrowstreet Capital | $729,144 | 0.0% |
Exited
| AQR Capital Management | $417,785 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 131 holders, 16.93M shares, $637.88M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Oct 09
Marquez Elena
Officer · 400 sh · $32,720
Oct 09
Marquez Elena
Officer · 3.25K sh · $260,849
Oct 09
Marquez Elena
Officer · 210 sh · $17,199
Oct 09
Marquez Elena
Officer · 1.02K sh · $81,589
Oct 09
Marquez Elena
Officer · 100 sh · $8,250
Sep 21
Lang Scott A.
Officer, Director · 15.00K sh · $1.20M
Sep 10
DANIELS LESLIE B
Director · 2.50K sh · $209,575
Sep 10
Martin Heather
Officer · 8.06K sh · $678,998
Sep 08
Ashe Gena L
Officer · 4.06K sh · $347,228
Sep 08
Ashe Gena L
Officer · 293 sh · $25,034
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Jul 27
SC 13G: BlackRock, Inc.
Jul 08
SC 13G: T. Rowe Price Investment Management…
Jul 08
SC 13D/A: Owl Creek Asset Management, L.P.
27.7% of class · View original SEC filing ↗
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q4 2025 ·
Methodology ·
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