Anterix Inc. (ATEX) — Institutional Holders, Q2 2026
172 institutional investment managers reported a ATEX position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $2.0B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
ATEX in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- T. Rowe Price Investment ManagementNew · +2,348,019 sh+$241.7M
- PRICE T ROWE ASSOCIATESAdded · +742,496 sh+$76.4M
- FMRAdded · +235,105 sh+$24.2M
- Invesco Ltd.New · +200,975 sh+$20.7M
- STATE STREETAdded · +108,032 sh+$11.1M
Biggest sellers
- JANE STREET GROUPTrimmed · -403,351 sh-$41.5M
- MILLENNIUM MANAGEMENTTrimmed · -277,582 sh-$28.6M
- AYAL Capital Advisors LtdSold out · -197,119 sh-$20.3M
- GARNET EQUITY CAPITALTrimmed · -187,377 sh-$19.3M
- Potrero Capital ResearchTrimmed · -183,036 sh-$18.8M
ATEX 13F holders ranked 1–100 of 172
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | Owl Creek Asset Management, L.P.#1 · 5,411,776 sh | 5,411,776 | $557.1M | 46.08% | 0.0% |
| 2 | T. Rowe Price Investment Management#2 · 2,348,019 sh | 2,348,019 | $241.7M | 0.16% | New |
| 3 | Heard Capital#3 · 1,716,738 sh | 1,716,738 | $176.7M | 7.56% | 0.0% |
| 4 | BlackRock#4 · 1,075,115 sh | 1,075,115 | $110.7M | <0.01% | +6.7% |
| 5 | PRICE T ROWE ASSOCIATES#5 · 750,451 sh | 750,451 | $77.3M | <0.01% | +9333.7% |
| 6 | Jupiter Topco#6 · 662,415 sh | 662,415 | $68.2M | 0.03% | — |
| 7 | VANGUARD CAPITAL MANAGEMENT#7 · 553,002 sh | 553,002 | $56.9M | <0.01% | -3.6% |
| 8 | PLUSTICK MANAGEMENT#8 · 520,000 sh | 520,000 | $53.5M | 19.90% | +4.1% |
| 9 | STATE STREET#9 · 495,950 sh | 495,950 | $51.1M | <0.01% | +27.8% |
| 10 | GAMCO INVESTORS, ET AL#10 · 415,520 sh | 415,520 | $42.8M | 0.38% | -2.4% |
| 11 | GEODE CAPITAL MANAGEMENT#11 · 388,076 sh | 388,076 | $40.0M | <0.01% | +3.7% |
| 12 | QVT Financial#12 · 383,941 sh | 383,941 | $39.5M | 2.32% | -23.8% |
| 13 | DIMENSIONAL FUND ADVISORS#13 · 370,964 sh | 370,964 | $38.2M | <0.01% | -12.7% |
| 14 | FMR#14 · 370,400 sh | 370,400 | $38.1M | <0.01% | +173.8% |
| 15 | GABELLI FUNDS#15 · 278,500 sh | 278,500 | $28.7M | 0.18% | +4.8% |
| 16 | Invesco Ltd.#16 · 200,975 sh | 200,975 | $20.7M | <0.01% | New |
| 17 | VANGUARD PORTFOLIO MANAGEMENT#17 · 158,469 sh | 158,469 | $16.3M | <0.01% | -3.7% |
| 18 | GARNET EQUITY CAPITAL#18 · 156,119 sh | 156,119 | $16.1M | 3.03% | -54.5% |
| 19 | Potomac Capital Management#19 · 155,071 sh | 155,071 | $16.0M | 10.89% | -10.8% |
| 20 | Panoramic Capital#20 · 154,377 sh | 154,377 | $15.9M | 6.84% | +14.4% |
| 21 | GOLDMAN SACHS GROUP#21 · 139,334 sh | 139,334 | $14.3M | <0.01% | -13.9% |
| 22 | CHARLES SCHWAB INVESTMENT MANAGEMENT#22 · 139,278 sh | 139,278 | $14.3M | <0.01% | -1.5% |
| 23 | BANK OF AMERICA#23 · 134,686 sh | 134,686 | $13.9M | <0.01% | -19.7% |
| 24 | NORTHERN#24 · 123,231 sh | 123,231 | $12.7M | <0.01% | +4.8% |
| 25 | VANGUARD FIDUCIARY#25 · 120,999 sh | 120,999 | $12.5M | <0.01% | +1.3% |
| 26 | KIRR MARBACH#26 · 116,069 sh | 116,069 | $11.9M | — | +2.0% |
| 27 | D. E. Shaw#27 · 92,990 sh | 92,990 | $9.6M | <0.01% | +1532.5% |
| 28 | MORGAN STANLEY#28 · 80,425 sh | 80,425 | $8.3M | <0.01% | -21.7% |
| 29 | OpenArc Corporate Advisory#29 · 75,576 sh | 75,576 | $7.8M | — | +2.3% |
| 30 | Beartown Capital Management#30 · 75,000 sh | 75,000 | $7.7M | 3.39% | -25.0% |
| 31 | Granahan Investment Management#31 · 72,121 sh | 72,121 | $7.4M | 0.26% | New |
| 32 | Bank of New York Mellon#32 · 69,374 sh | 69,374 | $7.1M | <0.01% | +2.3% |
| 33 | Marble Bar Asset Management LLP#33 · 68,248 sh | 68,248 | $7.0M | 4.87% | +27.5% |
| 34 | 683 Capital Management#34 · 66,000 sh | 66,000 | $6.8M | 0.33% | +43.5% |
| 35 | CITIGROUP#35 · 59,998 sh | 59,998 | $6.2M | <0.01% | -49.9% |
| 36 | Trexquant Investment#36 · 53,423 sh | 53,423 | $5.5M | 0.03% | +33.0% |
| 37 | TD ASSET MANAGEMENT#37 · 53,258 sh | 53,258 | $5.5M | <0.01% | New |
| 38 | Informed Momentum#38 · 52,534 sh | 52,534 | $5.4M | 0.48% | New |
| 39 | Potrero Capital Research#39 · 46,525 sh | 46,525 | $4.8M | 2.66% | -79.7% |
| 40 | Teton Advisors#40 · 43,000 sh | 43,000 | $4.4M | 2.56% | -18.9% |
| 41 | Nuveen#41 · 35,798 sh | 35,798 | $3.7M | <0.01% | +56.5% |
| 42 | Creative Planning#42 · 34,541 sh | 34,541 | $3.6M | <0.01% | +8.1% |
| 43 | GILDER GAGNON HOWE#43 · 32,833 sh | 32,833 | $3.4M | 0.03% | New |
| 44 | WELLINGTON MANAGEMENT GROUP LLP#44 · 31,006 sh | 31,006 | $3.2M | <0.01% | New |
| 45 | HRT FINANCIAL#45 · 30,673 sh | 30,673 | $3.2M | <0.01% | -82.5% |
| 46 | MILLENNIUM MANAGEMENT#46 · 30,340 sh | 30,340 | $3.1M | <0.01% | -90.1% |
| 47 | EVR Research#47 · 25,000 sh | 25,000 | $2.6M | 1.27% | New |
| 48 | UBS Group AG#48 · 24,018 sh | 24,018 | $2.5M | <0.01% | -49.8% |
| 49 | Campbell & Investment Adviser#49 · 21,084 sh | 21,084 | $2.2M | 0.11% | -47.9% |
| 50 | HARBOR CAPITAL ADVISORS#50 · 20,805 sh | 20,805 | $2.1M | — | New |
| 51 | HANSEATIC MANAGEMENT SERVICES#51 · 18,418 sh | 18,418 | $1.9M | — | New |
| 52 | Caption Management#52 · 17,532 sh | 17,532 | $1.8M | <0.01% | New |
| 53 | JANE STREET GROUP#53 · 17,506 sh | 17,506 | $1.8M | <0.01% | -95.8% |
| 54 | Quantinno Capital Management#54 · 17,229 sh | 17,229 | $1.8M | <0.01% | +10.3% |
| 55 | WOODMONT INVESTMENT COUNSEL#55 · 16,973 sh | 16,973 | $1.7M | 0.10% | -7.3% |
| 56 | STATE OF WISCONSIN INVESTMENT BOARD#56 · 16,070 sh | 16,070 | $1.7M | <0.01% | +21.1% |
| 57 | JPMORGAN CHASE#57 · 16,489 sh | 16,489 | $1.6M | <0.01% | +224.8% |
| 58 | AMERICAN CENTURY COMPANIES#58 · 15,731 sh | 15,731 | $1.6M | <0.01% | +136.2% |
| 59 | DEUTSCHE BANK AG\#59 · 15,643 sh | 15,643 | $1.6M | <0.01% | +65.6% |
| 60 | TORONTO DOMINION BANK#60 · 15,600 sh | 15,600 | $1.6M | <0.01% | +71.4% |
| 61 | WELLS FARGO & COMPANY#61 · 14,648 sh | 14,648 | $1.5M | <0.01% | +148.1% |
| 62 | RHUMBLINE ADVISERS#62 · 14,337 sh | 14,337 | $1.5M | <0.01% | +1.6% |
| 63 | AQR CAPITAL MANAGEMENT#63 · 13,437 sh | 13,437 | $1.4M | <0.01% | +21.1% |
| 64 | CAXTON ASSOCIATES LLP#64 · 13,432 sh | 13,432 | $1.4M | 0.03% | New |
| 65 | GWN SECURITIES#65 · 13,425 sh | 13,425 | $1.4M | 0.23% | -18.5% |
| 66 | Quadrature Capital Ltd#66 · 12,979 sh | 12,979 | $1.3M | 0.01% | -10.5% |
| 67 | Jefferson Bridge Capital#67 · 12,950 sh | 12,950 | $1.3M | 1.16% | 0.0% |
| 68 | LPL Financial#68 · 12,353 sh | 12,353 | $1.3M | <0.01% | New |
| 69 | Vanguard Global Advisers#69 · 10,841 sh | 10,841 | $1.1M | <0.01% | +55.6% |
| 70 | FCG Investment#70 · 10,762 sh | 10,762 | $1.1M | — | New |
| 71 | Waterfront Wealth#71 · 10,714 sh | 10,714 | $1.1M | 0.17% | -82.1% |
| 72 | Numerai GP#72 · 10,271 sh | 10,271 | $1.1M | 0.09% | New |
| 73 | STRS OHIO#73 · 9,800 sh | 9,800 | $1.0M | <0.01% | -37.6% |
| 74 | CITADEL ADVISORS#74 · 9,014 sh | 9,014 | $927.9K | <0.01% | -94.4% |
| 75 | Gotham Asset Management#75 · 8,867 sh | 8,867 | $912.8K | <0.01% | New |
| 76 | XTX Topco Ltd#76 · 8,582 sh | 8,582 | $883.4K | 0.01% | New |
| 77 | Gem Investment Advisors#77 · 7,183 sh | 7,183 | $739.4K | 0.45% | 0.0% |
| 78 | CenterBook Partners#78 · 6,877 sh | 6,877 | $707.9K | 0.03% | -94.6% |
| 79 | MetLife Investment Management#79 · 6,651 sh | 6,651 | $684.7K | <0.01% | +0.7% |
| 80 | Covestor Ltd#80 · 6,637 sh | 6,637 | $683.0K | 0.39% | -22.0% |
| 81 | Inspire Investing#81 · 6,604 sh | 6,604 | $679.8K | — | -50.4% |
| 82 | OCCUDO QUANTITATIVE STRATEGIES#82 · 6,562 sh | 6,562 | $675.5K | 0.04% | New |
| 83 | PRUDENTIAL FINANCIAL#83 · 6,532 sh | 6,532 | $672.4K | <0.01% | +1.2% |
| 84 | Aster Capital Management (DIFC) Ltd#84 · 6,100 sh | 6,100 | $627.9K | 0.13% | New |
| 85 | Central Pacific Bank - Division#85 · 6,000 sh | 6,000 | $617.6K | — | 0.0% |
| 86 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#86 · 5,584 sh | 5,584 | $574.8K | 0.00% | -86.0% |
| 87 | FIRST ADVISORS#87 · 5,578 sh | 5,578 | $574.2K | <0.01% | New |
| 88 | SIMPLEX TRADING#88 · 5,377 sh | 5,377 | $553.5K | <0.01% | -87.7% |
| 89 | MIRAE ASSET GLOBAL ETFS Ltd.#89 · 5,290 sh | 5,290 | $544.6K | <0.01% | -2.5% |
| 90 | ALLIANCEBERNSTEIN L.P.#90 · 13,330 sh | 13,330 | $509.1K | <0.01% | +9.9% |
| 91 | Cornerstone Investment Partners#91 · 4,866 sh | 4,866 | $500.9K | 0.02% | New |
| 92 | DARK FOREST CAPITAL MANAGEMENT#92 · 4,720 sh | 4,720 | $485.9K | 0.03% | New |
| 93 | NEW YORK STATE COMMON RETIREMENT FUND#93 · 4,509 sh | 4,509 | $464.2K | <0.01% | +66.4% |
| 94 | Baader Bank Aktiengesellschaft#94 · 4,500 sh | 4,500 | $463.2K | 0.03% | New |
| 95 | Aquatic Capital Management#95 · 4,299 sh | 4,299 | $442.5K | 0.02% | New |
| 96 | Atom Investors#96 · 4,124 sh | 4,124 | $424.5K | 0.04% | -95.1% |
| 97 | Brevan Howard Capital Management#97 · 4,028 sh | 4,028 | $414.6K | <0.01% | New |
| 98 | MIRABELLA FINANCIAL SERVICES LLP#98 · 4,025 sh | 4,025 | $414.3K | 0.04% | New |
| 99 | VIRTUS ADVISERS#99 · 3,976 sh | 3,976 | $409.3K | 0.16% | +13.6% |
| 100 | STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM#100 · 3,975 sh | 3,975 | $409.2K | <0.01% | New |
Funds that sold out of ATEX in Q2 2026 (16)
Held ATEX at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| AYAL Capital Advisors Ltd197,119 sh | 197,119 | $7.5M |
| DG Capital Management168,217 sh | 168,217 | $6.4M |
| ARDSLEY ADVISORY PARTNERS110,000 sh | 110,000 | $4.2M |
| GRATIA CAPITAL87,500 sh | 87,500 | $3.3M |
| Squarepoint Ops59,736 sh | 59,736 | $2.3M |
| Resolute Capital Asset Partners51,106 sh | 51,106 | $2.0M |
| Schonfeld Strategic Advisors23,211 sh | 23,211 | $886.4K |
| APIS CAPITAL ADVISORS19,740 sh | 19,740 | $753.9K |
| Virtu Financial17,885 sh | 17,885 | $683.0K |
| J. Goldman9,033 sh | 9,033 | $345.0K |
| ExodusPoint Capital Management8,794 sh | 8,794 | $335.8K |
| Crewe Advisors3,000 sh | 3,000 | $114.6K |
| Destiny Wealth Partners775 sh | 775 | $29.6K |
| LOS ANGELES CAPITAL MANAGEMENT141 sh | 141 | $5.4K |
| Root Financial Partners47 sh | 47 | $1.8K |
| MAI Capital Management20 sh | 20 | $764.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.