Anterix Inc. - ATEX

Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 1 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
Marble Bar Asset Management LLP History New 13,266 289,597 6.71% 1 +13,266 New Q4 2025 Feb 17, 2026
Owl Creek Asset Management, L.P. History No change 5,411,776 118,139 3.57% 3.69% 2 0 0.0% Q4 2025 Feb 17, 2026
Heard Capital LLC History No change 1,716,738 37,476 1.76% 1.79% 3 0 0.0% Q4 2025 Feb 17, 2026
BlackRock, Inc. History Reduced 1,018,275 22,228 0.0% 0.0% 4 -13,460 -1.3% Q4 2025 Feb 12, 2026
VANGUARD GROUP INC History Reduced 931,305 20,330 0.0% 0.0% 5 -77,072 -7.64% Q4 2025 Jan 29, 2026
QVT Financial LP History No change 503,941 11,001 0.94% 0.76% 6 0 0.0% Q4 2025 Feb 13, 2026
Jefferies Financial Group Inc. History New 454,508 9,921 0.05% 7 +454,508 New Q4 2025 Feb 09, 2026
MILLENNIUM MANAGEMENT LLC History Added to 439,946 9,604 0.0% 0.0% 8 +404,838 1153.12% Q4 2025 Feb 17, 2026
GAMCO INVESTORS, INC. ET AL History Added to 422,470 9,222 0.09% 0.07% 9 +102,400 31.99% Q4 2025 Feb 05, 2026
GARNET EQUITY CAPITAL HOLDINGS, INC. History No change 397,395 8,675 1.14% 3.17% 10 0 0.0% Q4 2025 Feb 17, 2026
GEODE CAPITAL MANAGEMENT, LLC History Reduced 360,139 7,863 0.0% 0.0% 11 -1,190 -0.33% Q4 2025 Feb 09, 2026
STATE STREET CORP History Added to 333,788 7,286 0.0% 0.0% 12 +17,017 5.37% Q4 2025 Feb 13, 2026
DIMENSIONAL FUND ADVISORS LP History Added to 324,923 7,092 0.0% 0.0% 13 +13,633 4.38% Q4 2025 Feb 12, 2026
GABELLI FUNDS LLC History New 304,907 6,656 0.05% 14 +304,907 New Q4 2025 Feb 05, 2026
MARSHALL WACE, LLP History Added to 291,255 6,358 0.01% 0.01% 15 +4,674 1.63% Q4 2025 Feb 13, 2026
AYAL Capital Advisors Ltd History Added to 265,000 5,784 2.02% 1.77% 16 +56,029 26.81% Q4 2025 Feb 17, 2026
Potomac Capital Management, Inc. History New 187,900 4,101 3.29% 17 +187,900 New Q4 2025 Feb 11, 2026
JANE STREET GROUP, LLC History Added to 169,114 3,691 0.0% 0.0% 18 +113,331 203.16% Q4 2025 Feb 12, 2026
Beartown Capital Management, LLC History New 145,000 3,165 2.29% 19 +145,000 New Q4 2025 Feb 18, 2026
BANK OF AMERICA CORP /DE/ History Added to 143,124 3,124 0.0% 0.0% 20 +6,635 4.86% Q4 2025 Feb 17, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History Added to 138,677 3,027 0.0% 0.0% 21 +599 0.43% Q4 2025 Feb 13, 2026
TUDOR INVESTMENT CORP ET AL History Reduced 124,943 2,727 0.01% 12.82% 22 -3,738 -2.9% Q4 2025 Feb 17, 2026
Qube Research & Technologies Ltd History Reduced 124,646 2,721 0.0% 0.0% 23 -78,943 -38.78% Q4 2025 Feb 17, 2026
GOLDMAN SACHS GROUP INC History Reduced 124,630 2,720 0.0% 0.0% 24 -38,822 -23.75% Q4 2025 Mar 25, 2026
CITADEL ADVISORS LLC History Added to 120,380 2,627 0.0% 0.0% 25 +9,286 8.36% Q4 2025 Feb 17, 2026
NORTHERN TRUST CORP History Reduced 114,262 2,494 0.0% 0.0% 26 -2,743 -2.34% Q4 2025 Feb 17, 2026
MORGAN STANLEY History Added to 109,445 2,389 0.0% 0.0% 27 +37,002 51.08% Q4 2025 Feb 13, 2026
KIRR MARBACH & CO LLC /IN/ History Added to 100,418 2,192 0.42% 0.38% 28 +3,569 3.69% Q4 2025 Jan 26, 2026
Man Group plc History Added to 100,145 2,186 0.0% 0.0% 29 +24,431 32.27% Q4 2025 Feb 17, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Added to 90,243 1,970 0.0% 0.0% 30 +74,519 473.92% Q4 2025 Feb 17, 2026
Atom Investors LP History Added to 83,085 1,813 0.14% 0.05% 31 +55,097 196.86% Q4 2025 Feb 17, 2026
Caption Management, LLC History New 72,993 1,593 0.01% 33 +72,993 New Q4 2025 Feb 17, 2026
GSA CAPITAL PARTNERS LLP History Added to 72,976 1,593 0.14% 0.11% 32 +13,324 22.34% Q4 2025 Feb 06, 2026
Bank of New York Mellon Corp History Added to 68,792 1,501 0.0% 0.0% 34 +29,185 73.69% Q4 2025 Feb 10, 2026
D. E. Shaw & Co., Inc. History Reduced 61,765 1,348 0.0% 0.0% 35 -69,310 -52.88% Q4 2025 Feb 17, 2026
Nuveen, LLC History Added to 53,155 1,160 0.0% 0.0% 36 +30,420 133.8% Q4 2025 Feb 12, 2026
Squarepoint Ops LLC History Added to 53,117 1,159 0.0% 0.0% 37 +33,656 172.94% Q4 2025 Feb 13, 2026
Teton Advisors, LLC History Reduced 53,000 1,156 0.8% 0.77% 38 -5,000 -8.62% Q4 2025 Feb 05, 2026
Waterfront Wealth Inc. History New 48,627 1,150 0.22% 39 +48,627 New Q4 2025 Jan 27, 2026
FMR LLC History Reduced 51,044 1,114 0.0% 0.0% 40 -236,745 -82.26% Q4 2025 Feb 17, 2026
Schonfeld Strategic Advisors LLC History No change 49,462 1,079 0.0% 0.01% 41 0 0.0% Q4 2025 Feb 17, 2026
UBS Group AG History Added to 48,787 1,065 0.0% 0.0% 42 +3,166 6.94% Q4 2025 Jan 29, 2026
SG Americas Securities, LLC History New 48,509 1,059 0.0% 43 +48,509 New Q4 2025 Jan 09, 2026
Trexquant Investment LP History Added to 46,398 1,012 0.01% 0.01% 44 +6,412 16.04% Q4 2025 Feb 17, 2026
HRT FINANCIAL LP History Reduced 43,090 940 0.0% 0.0% 45 -19,043 -30.65% Q4 2025 Feb 12, 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP History New 33,401 729 0.0% 46 +33,401 New Q4 2025 Feb 13, 2026
Creative Planning History Reduced 30,779 671 0.0% 0.0% 47 -12,915 -29.56% Q4 2025 Feb 17, 2026
GABELLI & Co INVESTMENT ADVISERS, INC. History Reduced 30,650 669 0.1% 0.18% 48 -21,550 -41.28% Q4 2025 Feb 05, 2026
Campbell & CO Investment Adviser LLC History Added to 27,505 600 0.03% 0.03% 49 +6,705 32.24% Q4 2025 Feb 12, 2026
STRS OHIO History Added to 26,500 578 0.0% 0.0% 50 +15,100 132.46% Q4 2025 Feb 02, 2026
SIMPLEX TRADING, LLC History Added to 22,550 492 0.0% 0.0% 51 +19,582 659.77% Q4 2025 Feb 11, 2026
DG Capital Management, LLC History Reduced 21,245 463 0.2% 5.55% 52 -723,299 -97.15% Q4 2025 Feb 13, 2026
Proficio Capital Partners LLC History Reduced 20,000 436 0.03% 0.04% 53 -7,340 -26.85% Q4 2025 Feb 12, 2026
Sandia Investment Management LP History Reduced 20,000 436 1.09% 1.75% 54 -7,340 -26.85% Q4 2025 Feb 17, 2026
BARCLAYS PLC History Added to 18,789 410 0.0% 0.0% 55 +2,388 14.56% Q4 2025 Feb 13, 2026
STATE OF WISCONSIN INVESTMENT BOARD History New 18,432 402 0.0% 56 +18,432 New Q4 2025 Feb 17, 2026
BALYASNY ASSET MANAGEMENT L.P. History Reduced 17,740 387 0.0% 0.0% 57 -75,536 -80.98% Q4 2025 Feb 17, 2026
WOODMONT INVESTMENT COUNSEL LLC History Reduced 17,316 378 0.02% 0.02% 58 -36 -0.21% Q4 2025 Jan 21, 2026
ALLIANCEBERNSTEIN L.P. History Added to 15,430 336 0.0% 0.0% 59 +2,200 16.63% Q4 2025 Feb 17, 2026
EntryPoint Capital, LLC History Reduced 15,012 327 0.13% 0.16% 60 -4,213 -21.91% Q4 2025 Feb 12, 2026
RHUMBLINE ADVISERS History Reduced 14,918 325 0.0% 0.0% 61 -2,863 -16.1% Q4 2025 Feb 13, 2026
XTX Topco Ltd History New 14,255 311 0.01% 62 +14,255 New Q4 2025 Feb 17, 2026
IMC-Chicago, LLC History New 13,377 292 0.0% 63 +13,377 New Q4 2025 Jan 29, 2026
Jefferson Bridge Capital, LLC History New 12,950 282 0.28% 64 +12,950 New Q4 2025 Jan 21, 2026
Verition Fund Management LLC History New 12,600 275 0.0% 65 +12,600 New Q4 2025 Feb 13, 2026
WELLS FARGO & COMPANY/MN History Added to 12,372 270 0.0% 0.0% 66 +5,401 77.48% Q4 2025 Feb 13, 2026
Covestor Ltd History Added to 12,031 263 0.14% 0.11% 67 +2,508 26.34% Q4 2025 Feb 06, 2026
Quantinno Capital Management LP History New 9,487 207 0.0% 68 +9,487 New Q4 2025 Feb 17, 2026
AlphaQuest LLC History Added to 8,802 192 0.01% 0.01% 69 +3,367 61.95% Q4 2025 Feb 09, 2026
Aquatic Capital Management LLC History New 8,675 189 0.01% 70 +8,675 New Q4 2025 Feb 17, 2026
MetLife Investment Management, LLC History Reduced 6,747 147 0.0% 0.0% 71 -952 -12.37% Q4 2025 Feb 12, 2026
GROUP ONE TRADING LLC History Added to 6,175 134 0.0% 0.0% 72 +4,661 307.86% Q4 2025 Feb 12, 2026
Central Pacific Bank - Trust Division History No change 6,000 130 0.02% 0.02% 73 0 0.0% Q4 2025 Jan 07, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History Reduced 5,214 113 0.0% 0.0% 74 -21 -0.4% Q4 2025 Feb 17, 2026
JPMORGAN CHASE & CO History Reduced 4,673 102 0.0% 0.0% 75 -320 -6.41% Q4 2025 Feb 11, 2026
DEUTSCHE BANK AG\ History Reduced 4,289 93 0.0% 0.0% 77 -9,320 -68.48% Q4 2025 Feb 11, 2026
TORONTO DOMINION BANK History New 4,300 93 0.0% 76 +4,300 New Q4 2025 Feb 17, 2026
VIRTUS ADVISERS, LLC History No change 3,500 76 0.04% 0.04% 78 0 0.0% Q4 2025 Feb 13, 2026
Police & Firemen's Retirement System of New Jersey History No change 3,069 66 0.0% 0.0% 79 0 0.0% Q4 2025 Feb 13, 2026
NEW YORK STATE COMMON RETIREMENT FUND History No change 2,709 59 0.0% 0.0% 80 0 0.0% Q4 2025 Feb 12, 2026
Legal & General Group Plc History Reduced 2,553 55 0.0% 0.0% 81 -46 -1.77% Q4 2025 Feb 09, 2026
BNP PARIBAS FINANCIAL MARKETS History Added to 2,491 54 0.0% 0.0% 82 +237 10.51% Q4 2025 Feb 10, 2026
Russell Investments Group, Ltd. History Reduced 1,284 28 0.0% 0.0% 83 -874 -40.5% Q4 2025 Feb 17, 2026
ROYAL BANK OF CANADA History New 1,208 26 0.0% 84 +1,208 New Q4 2025 Feb 17, 2026
Ameritas Investment Partners, Inc. History No change 1,033 22 0.0% 0.0% 85 0 0.0% Q4 2025 Feb 11, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History Reduced 693 15 0.0% 0.0% 86 -117 -14.44% Q4 2025 Feb 17, 2026
CITIGROUP INC History Reduced 628 13 0.0% 0.0% 87 -679 -51.95% Q4 2025 Feb 13, 2026
Tower Research Capital LLC (TRC) History Reduced 608 13 0.0% 0.0% 88 -442 -42.1% Q4 2025 Feb 17, 2026
Parallel Advisors, LLC History Added to 570 12 0.0% 0.0% 89 +517 975.47% Q4 2025 Feb 11, 2026
AMALGAMATED BANK History Reduced 354 8 0.0% 0.0% 90 -82 -18.81% Q4 2025 Feb 05, 2026
CWM, LLC History Reduced 322 7 0.0% 0.0% 91 -492 -60.44% Q4 2025 Jan 26, 2026
Pinnacle Wealth Planning Services, Inc. History New 304 6 0.0% 92 +304 New Q4 2025 Feb 13, 2026
SIGNATUREFD, LLC History Added to 250 5 0.0% 0.0% 93 +106 73.61% Q4 2025 Jan 20, 2026
Allworth Financial LP History New 197 4 0.0% 96 +197 New Q4 2025 Feb 05, 2026
Quarry LP History New 188 4 0.0% 97 +188 New Q4 2025 Feb 13, 2026
Private Wealth Management Group, LLC History New 185 4 0.0% 98 +185 New Q4 2025 Jan 23, 2026
PNC FINANCIAL SERVICES GROUP, INC. History Added to 193 4 0.0% 94 +160 484.85% Q4 2025 Feb 06, 2026
NISA INVESTMENT ADVISORS, LLC History No change 203 4 0.0% 0.0% 95 0 0.0% Q4 2025 Jan 15, 2026
OSAIC HOLDINGS, INC. History Reduced 167 3 0.0% 0.0% 99 -2 -1.18% Q4 2025 Feb 17, 2026
US BANCORP \DE\ History Reduced 114 2 0.0% 0.0% 100 -174 -60.42% Q4 2025 Jan 30, 2026
LOS ANGELES CAPITAL MANAGEMENT LLC History New 141 2 0.0% 101 +141 New Q4 2025 Feb 11, 2026
Farther Finance Advisors, LLC History Reduced 123 2 0.0% 0.0% 103 -11 -8.21% Q4 2025 Jan 23, 2026
Optiver Holding B.V. History No change 124 2 0.0% 0.0% 102 0 0.0% Q4 2025 Feb 17, 2026
Arax Advisory Partners History Reduced 89 1 0.0% 0.0% 105 -294 -76.76% Q4 2025 Feb 13, 2026
Sterling Capital Management LLC History Added to 73 1 0.0% 104 +46 170.37% Q4 2025 Feb 13, 2026
WPG Advisers, LLC History No change 55 1 0.0% 0.0% 106 0 0.0% Q4 2025 Jan 28, 2026
SCOGGIN MANAGEMENT LP History Closed out 0 0 0.76% -225,000 -100.0% Q3 2025 Nov 13, 2025
SBI Securities Co., Ltd. History Closed out 0 0 0.97% -74,983 -100.0% Q3 2025 Nov 05, 2025
Y-Intercept (Hong Kong) Ltd History Closed out 0 0 0.02% -31,400 -100.0% Q3 2025 Oct 31, 2025
Engineers Gate Manager LP History Closed out 0 0 0.01% -27,051 -100.0% Q3 2025 Nov 14, 2025
AQR CAPITAL MANAGEMENT LLC History Closed out 0 0 0.0% -19,459 -100.0% Q3 2025 Nov 14, 2025
FourThought Financial Partners, LLC History Closed out 0 0 0.03% -14,406 -100.0% Q3 2025 Nov 13, 2025
Walleye Capital LLC History Closed out 0 0 0.0% -9,800 -100.0% Q3 2025 Nov 14, 2025
New Age Alpha Advisors, LLC History Closed out 0 0 0.0% -4,238 -100.0% Q3 2025 Nov 12, 2025
Quantbot Technologies LP History Closed out 0 0 0.0% -2,659 -100.0% Q3 2025 Nov 12, 2025
FNY Investment Advisers, LLC History Closed out 0 0 0.01% -1,500 -100.0% Q3 2025 Dec 15, 2025
QUADRANT CAPITAL GROUP LLC History Closed out 0 0 0.0% -1,185 -100.0% Q3 2025 Nov 13, 2025
Versant Capital Management, Inc History Closed out 0 0 0.0% -362 -100.0% Q3 2025 Oct 27, 2025
CIBC Private Wealth Group LLC History Closed out 0 0 0.0% -226 -100.0% Q3 2025 Nov 24, 2025
Clearstead Advisors, LLC History Closed out 0 0 0.0% -103 -100.0% Q3 2025 Nov 10, 2025
EverSource Wealth Advisors, LLC History Reduced 4 0 0.0% -49 -92.45% Q4 2025 Feb 06, 2026
MassMutual Private Wealth & Trust, FSB History New 37 0 +37 New Q4 2025 Jan 07, 2026
FEDERATED HERMES, INC. History Reduced 19 0 0.0% -31 -62.0% Q4 2025 Feb 12, 2026
PRINCIPAL SECURITIES, INC. History Closed out 0 0 -29 -100.0% Q3 2025 Nov 12, 2025
Hughes Financial Services, LLC History Reduced 2 0 -21 -91.3% Q4 2025 Feb 11, 2026
Fortitude Family Office, LLC History Closed out 0 0 -20 -100.0% Q3 2025 Oct 17, 2025
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC History New 13 0 +13 New Q4 2025 Feb 13, 2026
Trust Co History New 12 0 +12 New Q4 2025 Jan 15, 2026
Global Retirement Partners, LLC History New 9 0 +9 New Q4 2025 Feb 06, 2026
True Wealth Design, LLC History Closed out 0 0 -8 -100.0% Q3 2025 Oct 21, 2025
ROTHSCHILD INVESTMENT LLC History Closed out 0 0 -5 -100.0% Q3 2025 Nov 07, 2025
Advisory Services Network, LLC History Closed out 0 0 -5 -100.0% Q3 2025 Nov 18, 2025
Transamerica Financial Advisors, LLC History New 3 0 +3 New Q4 2025 Feb 13, 2026
GAMMA Investing LLC History Reduced 7 0 -2 -22.22% Q4 2025 Jan 05, 2026
Blue Trust, Inc. History No change 27 0 0 0.0% Q4 2025 Jan 16, 2026