Anterix Inc. 13F holders
171 funds reported a position in Anterix Inc. in their 13F for the quarter ended 30 June 2026, together 19.1 million shares worth $1.97 billion. Against the quarter before, 55 opened a position, 44 added, 47 trimmed and 16 sold out; together they bought a net 1.5 million shares. The largest holders: Owl Creek Asset Management, L.P., T. Rowe Price Investment Management, Inc. and Heard Capital LLC.
Funds holding171+39 on Q1 2026
Shares they held19.1Mworth $1.97 billion
Net bought on the quarter1.5M sharesabout $158.0 million at the funds' values
Funds buying to selling99 to 63opened or added, to cut or sold
Opened 55Added 44Held 23Trimmed 47Sold out 16
What each fund did in ATEX against its 13F for the quarter before; a change under 0.1% of a holding counts as held
Funds reporting a position in ATEX in their 13F, each quarter; hover a bar for the shares they held
Filed so far for the quarter to 30 September 2026
2,671 funds have filed their 13F for the quarter so far; the rest are due by 16 November 2026. Of those, 20 reported a position in Anterix Inc.: 1 opened one, 9 added, 2 trimmed and 5 sold out, a net 104,292 shares sold.
| Fund | Change in shares | Shares now | Status | Filing |
|---|---|---|---|---|
| Inspire Investing, LLC | +2,883 | 9,487 | added | 13F |
| Kirr Marbach & Co. LLC | +485 | 116,554 | added | 13F |
| Sterling Capital Management LLC | +340 | 380 | added | 13F |
| SBI Securities Co., Ltd. | -269 | 1 | trimmed | 13F |
| IFP Advisors, Inc | +110 | 507 | added | 13F |
| Nisa Investment Advisors, LLC | +59 | 494 | added | 13F |
| Gamma Investing LLC | +56 | 123 | added | 13F |
| Fortitude Family Office, LLC | +20 | 20 | new | 13F |
| Farther Finance Advisors, LLC | +19 | 125 | added | 13F |
| MassMutual Private Wealth & Trust, FSB | -4 | 40 | trimmed | 13F |
| SJS Investment Consulting Inc. | +1 | 65 | added | 13F |
| Signaturefd, LLC | +1 | 450 | added | 13F |
| FCG Investment Co | -10,762 | 0 | sold out | 13F |
| FNY Investment Advisers, LLC | -350 | 0 | sold out | 13F |
| Harbor Capital Advisors, Inc. | -20,805 | 0 | sold out | 13F |
| OpenArc Corporate Advisory, LLC | -75,576 | 0 | sold out | 13F |
| Redwood Family Wealth LLC | -500 | 0 | sold out | 13F |
The largest moves in the name among the funds that have filed, against each fund's previous 13F.
The well-known funds
Of the 44 funds followed here, 5 reported a position in Anterix Inc. in a 13F for the quarter ended 30 June 2026. The largest: Geode Capital Management, 388,076 shares worth $40.0 million, 0.0% of its reported book. New this quarter: Two Sigma Investments. In the quarter, 3 funds added or opened a position and 2 trimmed or sold out; together they sold a net 177,135 shares, about $18.2 million at the funds' own value per share on 30 June 2026. A change under 0.1% of a holding counts as held.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Geode Capital Management | 388,076 | $40.0 million | 0.0% | +13,775 | added | 30 June 2026 | 13F |
| FMR LLC | 370,400 | $38.1 million | 0.0% | +235,105 | added | 30 June 2026 | 13F |
| Millennium Management | 30,340 | $3.1 million | 0.0% | -277,582 | trimmed | 30 June 2026 | 13F |
| Citadel Advisors | 9,014 | $927,901 | 0.0% | -152,149 | trimmed | 30 June 2026 | 13F |
| Two Sigma Investments | 3,716 | $382,525 | 0.0% | +3,716 | new | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.The largest holders
| Fund | Shares | Share of all | Value | Of its book | Change in shares | Filing |
|---|---|---|---|---|---|---|
| Owl Creek Asset Management, L.P. | 5,411,776 | 28.32% | $557.1 million | 49.39% | no change | 13F |
| T. Rowe Price Investment Management, Inc. | 2,348,019 | 12.29% | $241.7 million | 0.16% | new | 13F |
| Heard Capital LLC | 1,716,738 | 8.98% | $176.7 million | 7.56% | no change | 13F |
| BlackRock, Inc. | 1,075,115 | 5.63% | $110.7 million | 0.00% | +67,972 | 13F |
| Price T Rowe Associates Inc. | 750,451 | 3.93% | $77.3 million | 0.01% | +742,496 | 13F |
| Jupiter Topco LLC | 662,415 | 3.47% | $68.2 million | 0.03% | first 13F | 13F |
| Vanguard Capital Management LLC | 553,002 | 2.89% | $56.9 million | 0.00% | -20,845 | 13F |
| Plustick Management LLC | 520,000 | 2.72% | $53.5 million | 22.69% | +20,404 | 13F |
| State Street Corp. | 495,950 | 2.60% | $51.1 million | 0.00% | +108,032 | 13F |
| Gamco Investors, Inc. Et Al | 415,520 | 2.17% | $42.8 million | 0.38% | -10,300 | 13F |
| Geode Capital Management, LLC | 388,076 | 2.03% | $40.0 million | 0.00% | +13,775 | 13F |
| QVT Financial LP | 383,941 | 2.01% | $39.5 million | 2.56% | -120,000 | 13F |
| Dimensional Fund Advisors LP | 370,964 | 1.94% | $38.2 million | 0.01% | -53,892 | 13F |
| FMR LLC | 370,400 | 1.94% | $38.1 million | 0.00% | +235,105 | 13F |
| Gabelli Funds LLC | 278,500 | 1.46% | $28.7 million | 0.18% | +12,700 | 13F |
| Invesco Ltd. | 200,975 | 1.05% | $20.7 million | 0.00% | new | 13F |
| Vanguard Portfolio Management LLC | 158,469 | 0.83% | $16.3 million | 0.00% | -6,073 | 13F |
| Garnet Equity Capital Holdings, Inc. | 156,119 | 0.82% | $16.1 million | 7.20% | -187,377 | 13F |
| Potomac Capital Management, Inc. | 155,071 | 0.81% | $16.0 million | 11.68% | -18,731 | 13F |
| Panoramic Capital, LLC | 154,377 | 0.81% | $15.9 million | 6.84% | +19,377 | 13F |
| Goldman Sachs Group Inc. | 139,334 | 0.73% | $14.3 million | 0.00% | -22,452 | 13F |
| Charles Schwab Investment Management Inc. | 139,278 | 0.73% | $14.3 million | 0.00% | -2,110 | 13F |
| Bank of America Corp. | 134,686 | 0.70% | $13.9 million | 0.00% | -33,095 | 13F |
| Northern Trust Corp. | 123,231 | 0.64% | $12.7 million | 0.00% | +5,621 | 13F |
| Vanguard Fiduciary Trust Co. | 120,999 | 0.63% | $12.5 million | 0.00% | +1,543 | 13F |
| Kirr Marbach & Co. LLC | 116,069 | 0.61% | $11.9 million | 2.01% | +2,255 | 13F |
| D. E. Shaw & Co., Inc. | 92,990 | 0.49% | $9.6 million | 0.01% | +87,294 | 13F |
| Morgan Stanley | 80,425 | 0.42% | $8.3 million | 0.00% | -22,233 | 13F |
| OpenArc Corporate Advisory, LLC | 75,576 | 0.40% | $7.8 million | 0.09% | +1,728 | 13F |
| Beartown Capital Management, LLC | 75,000 | 0.39% | $7.7 million | 3.42% | -25,000 | 13F |
| Granahan Investment Management, LLC | 72,121 | 0.38% | $7.4 million | 0.27% | new | 13F |
| Bank of New York Mellon Corp | 69,374 | 0.36% | $7.1 million | 0.00% | +1,538 | 13F |
| Marble Bar Asset Management LLP | 68,248 | 0.36% | $7.0 million | 4.87% | +14,739 | 13F |
| 683 Capital Management, LLC | 66,000 | 0.35% | $6.8 million | 0.65% | +20,000 | 13F |
| Citigroup Inc. | 59,998 | 0.31% | $6.2 million | 0.00% | -59,863 | 13F |
| Trexquant Investment LP | 53,423 | 0.28% | $5.5 million | 0.03% | +13,248 | 13F |
| TD Asset Management Inc | 53,258 | 0.28% | $5.5 million | 0.01% | new | 13F |
| Informed Momentum Co LLC | 52,534 | 0.27% | $5.4 million | 0.48% | new | 13F |
| Potrero Capital Research LLC | 46,525 | 0.24% | $4.8 million | 2.93% | -183,036 | 13F |
| Teton Advisors, LLC | 43,000 | 0.23% | $4.4 million | 2.56% | -10,000 | 13F |
| Nuveen, LLC | 35,798 | 0.19% | $3.7 million | 0.00% | +12,923 | 13F |
| Creative Planning | 34,541 | 0.18% | $3.6 million | 0.00% | +2,577 | 13F |
| Gilder Gagnon Howe & Co. LLC | 32,833 | 0.17% | $3.4 million | 0.04% | new | 13F |
| Wellington Management Group LLP | 31,006 | 0.16% | $3.2 million | 0.00% | new | 13F |
| HRT Financial LP | 30,673 | 0.16% | $3.2 million | 0.01% | -144,252 | 13F |
| Millennium Management LLC | 30,340 | 0.16% | $3.1 million | 0.00% | -277,582 | 13F |
| EVR Research LP | 25,000 | 0.13% | $2.6 million | 1.27% | new | 13F |
| UBS Group AG | 24,018 | 0.13% | $2.5 million | 0.00% | -23,857 | 13F |
| Campbell & CO Investment Adviser LLC | 21,084 | 0.11% | $2.2 million | 0.11% | -19,376 | 13F |
| Harbor Capital Advisors, Inc. | 20,805 | 0.11% | $2.1 million | 0.15% | new | 13F |
The 50 largest of the 171 funds that reported a position in ATEX in their 13F for the quarter ended 30 June 2026, by the value each reported.
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Share of all is the fund's part of all the shares the funds reported. Change is shares against the fund's 13F for the quarter before. A 13F lists a manager's long positions in US-listed shares at the quarter's end. What is a 13F?Options the funds reported on ATEX
| Fund | Option | Shares under the options | Value of those shares | Quarter ended | Filing |
|---|---|---|---|---|---|
| Citadel Advisors | Calls | 90,600 | $9.3 million | 30 June 2026 | 13F |
| Citadel Advisors | Puts | 16,400 | $1.7 million | 30 June 2026 | 13F |
| Point72 Asset Management | Puts | 6,200 | $638,228 | 30 June 2026 | 13F |
| Point72 Asset Management | Calls | 3,100 | $319,114 | 30 June 2026 | 13F |
A 13F lists calls and puts by the shares they cover and what those shares were worth at the quarter's end, not what the options cost.
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They are not counted in the holdings above. A put gains when the stock falls, a call when it rises, and a fund may hold either to hedge.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 27 October 2026 | 13G/A | BlackRock, Inc. and 1 other | 914,372 | 4.7% | 30 September 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 27 July 2026 | 13G | BlackRock, Inc. and 1 other | 999,278 | 5.1% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 8 July 2026 | 13G | T. Rowe Price Investment Management, Inc. and 1 other | 2.3 million | 12.0% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 8 July 2026 | 13D/A | Owl Creek Asset Management, L.P. and 1 other | 5.6 million | 28.5% | 25 June 2026 | EDGAR | |
| 27 April 2026 | 13G/A | BlackRock, Inc. and 1 other | 934,649 | 5.0% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 30 January 2026 | 13G/A | The Vanguard Group and 1 other | 931,305 | 5.0% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 12 November 2025 | 13G/A | DG Capital Management, LLC and 3 others | 744,544 | 4.0% | 30 September 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short. 13D and 13GFails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 30 September 2026 | 689 | $79.04 | SEC |
| 21 September 2026 | 647 | $76.99 | SEC |
| 17 September 2026 | 1,324 | $76.22 | SEC |
| 11 September 2026 | 394 | $82.79 | SEC |
| 9 September 2026 | 1,864 | $85.44 | SEC |
| 2 September 2026 | 1 | $89.55 | SEC |
| 28 August 2026 | 1,995 | $94.67 | SEC |
| 27 August 2026 | 98 | $94.16 | SEC |
| 24 August 2026 | 3,935 | $93.25 | SEC |
| 20 August 2026 | 357 | $88.68 | SEC |
| 17 August 2026 | 49 | $91.53 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.