New Positions
27 managers initiated
Top five by reported value
Anterix Inc NASDAQ NMS - GLOBAL MARKET:ATEX
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
27 new37 added54 reduced21 exited
Total Institutional Holders
117
as of 2025-12-31
Top Holder
Owl Creek Asset Management, L.P.
$118.1M
Largest QoQ Increase
Jefferies Financial Group Inc.
+454,508 sh
Largest QoQ Decrease
Heard Capital LLC
-1,716,738 sh
New Positions(27)
Added To(37)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| MILLENNIUM MANAGEMENT LLC | 439,946 | +404,838 | $9.6M | +$8.9M | 1153.1% |
| JANE STREET GROUP, LLC | 169,114 | +113,331 | $3.7M | +$2.5M | 203.2% |
| GAMCO INVESTORS, INC. ET AL | 422,470 | +102,400 | $9.2M | +$2.4M | 32.0% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 90,243 | +74,519 | $2.0M | +$1.6M | 473.9% |
| AYAL Capital Advisors Ltd | 265,000 | +56,029 | $5.8M | +$1.3M | 26.8% |
| Atom Investors LP | 83,085 | +55,097 | $1.8M | +$1.2M | 196.8% |
| MORGAN STANLEY | 109,445 | +37,002 | $2.4M | +$833.8K | 51.1% |
| Squarepoint Ops LLC | 53,117 | +33,656 | $1.2M | +$741.7K | 172.9% |
| Nuveen, LLC | 53,155 | +30,420 | $1.2M | +$672.3K | 133.8% |
| Bank of New York Mellon Corp | 68,792 | +29,185 | $1.5M | +$651.4K | 73.7% |
| Man Group plc | 100,145 | +24,431 | $2.2M | +$560.6K | 32.3% |
| GABELLI FUNDS LLC | 304,907 | +18,625 | $6.7M | +$509.6K | 6.5% |
| SIMPLEX TRADING, LLC | 22,550 | +19,582 | $492.3K | +$492.2K | 659.8% |
| STATE STREET CORP | 333,788 | +17,017 | $7.3M | +$485.5K | 5.4% |
| DIMENSIONAL FUND ADVISORS LP | 324,923 | +13,633 | $7.1M | +$408.7K | 4.4% |
| STRS OHIO | 26,500 | +15,100 | $578.5K | +$333.7K | 132.4% |
| BARCLAYS PLC | 24,812 | +8,411 | $636.4K | +$284.3K | 51.3% |
| CITADEL ADVISORS LLC | 120,380 | +9,286 | $2.6M | +$242.7K | 8.3% |
| MARSHALL WACE, LLP | 291,255 | +4,674 | $6.4M | +$205.2K | 1.6% |
| BANK OF AMERICA CORP /DE/ | 143,124 | +6,635 | $3.1M | +$194.0K | 4.9% |
| Virtus ETF Advisers LLC | 10,500 | +7,000 | $241.3K | +$166.2K | 200.0% |
| Trexquant Investment LP | 46,398 | +6,412 | $1.0M | +$154.4K | 16.0% |
| Campbell & CO Investment Adviser LLC | 27,505 | +6,705 | $600.4K | +$153.9K | 32.2% |
| WELLS FARGO & COMPANY/MN | 12,372 | +5,401 | $270.1K | +$120.4K | 77.5% |
| KIRR MARBACH & CO LLC /IN/ | 100,418 | +3,569 | $2.2M | +$112.8K | 3.7% |
| GROUP ONE TRADING, L.P. | 6,175 | +4,661 | $134.8K | +$102.3K | 307.9% |
| UBS Group AG | 48,787 | +3,166 | $1.1M | +$85.5K | 6.9% |
| AlphaQuest LLC | 8,802 | +3,367 | $192.1K | +$75.5K | 62.0% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 138,677 | +599 | $3.0M | +$62.8K | 0.4% |
| ALLIANCEBERNSTEIN L.P. | 15,430 | +2,200 | $336.8K | +$52.8K | 16.6% |
| Parallel Advisors, LLC | 570 | +517 | $12.4K | +$11.3K | 975.5% |
| BNP PARIBAS ARBITRAGE, SNC | 2,491 | +237 | $54.4K | +$6.0K | 10.5% |
| PNC Financial Services Group, Inc. | 193 | +160 | $4.2K | +$3.5K | 484.8% |
| SIGNATUREFD, LLC | 250 | +106 | $5.5K | +$2.4K | 73.6% |
| Sterling Capital Management LLC | 73 | +46 | $1.6K | +$1.0K | 170.4% |
| GSA CAPITAL PARTNERS LLP | 72,976 | +13,324 | $1.6K | +$312 | 22.3% |
| Covestor Ltd | 12,031 | +2,508 | $263 | +$59 | 26.3% |
Reduced(54)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Heard Capital LLC | 1,716,738 | -1,716,738 | $37.5M | -$36.2M | -50.0% |
| DG Capital Management, LLC | 21,245 | -723,299 | $463.8K | -$15.5M | -97.1% |
| FMR LLC | 51,044 | -236,745 | $1.1M | -$5.1M | -82.3% |
| Owl Creek Asset Management, L.P. | 5,411,776 | 0 | $118.1M | +$1.9M | 0.0% |
| Qube Research & Technologies Ltd | 124,646 | -78,943 | $2.7M | -$1.7M | -38.8% |
| Balyasny Asset Management LLC | 17,740 | -75,536 | $387.3K | -$1.6M | -81.0% |
| D. E. Shaw & Co., Inc. | 61,765 | -69,310 | $1.3M | -$1.5M | -52.9% |
| VANGUARD GROUP INC | 931,305 | -77,072 | $20.3M | -$1.3M | -7.6% |
| GOLDMAN SACHS GROUP INC | 124,630 | -38,822 | $2.7M | -$788.6K | -23.8% |
| GABELLI & Co INVESTMENT ADVISERS, INC. | 30,650 | -21,550 | $669.1K | -$451.6K | -41.3% |
| Royal Bank of Canada | 1,208 | -17,182 | $26.0K | -$449.0K | -93.4% |
| Creative Planning | 30,779 | -12,915 | $671.9K | -$266.2K | -29.6% |
| DEUTSCHE BANK AG\ | 4,289 | -9,320 | $93.6K | -$198.6K | -68.5% |
| QVT Financial LP | 503,941 | 0 | $11.0M | +$181.4K | 0.0% |
| Sandia Investment Management LP | 20,000 | -7,340 | $436.6K | -$150.4K | -26.8% |
| Proficio Capital Partners LLC | 20,000 | -7,340 | $436.6K | -$150.4K | -26.8% |
| GARNET EQUITY CAPITAL HOLDINGS, INC. | 397,395 | 0 | $8.7M | +$143.1K | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 360,139 | -1,190 | $7.9M | +$104.0K | -0.3% |
| Teton Advisors, LLC | 53,000 | -5,000 | $1.2M | -$88.3K | -8.6% |
| EntryPoint Capital, LLC | 15,012 | -4,213 | $327.7K | -$85.0K | -21.9% |
| BlackRock, Inc. | 1,018,275 | -13,460 | $22.2M | +$77.6K | -1.3% |
| RHUMBLINE ADVISERS | 14,918 | -2,863 | $325.7K | -$56.1K | -16.1% |
| TUDOR INVESTMENT CORP ET AL | 124,943 | -3,738 | $2.7M | -$35.3K | -2.9% |
| Russell Investments Group, Ltd. | 1,284 | -874 | $28.0K | -$18.3K | -40.5% |
| MetLife Investment Management, LLC | 6,747 | -952 | $147.3K | -$18.0K | -12.4% |
| Schonfeld Strategic Advisors LLC | 49,462 | 0 | $1.1M | +$17.8K | 0.0% |
| NORTHERN TRUST CORP | 114,262 | -2,743 | $2.5M | -$17.8K | -2.3% |
| CITIGROUP INC | 628 | -679 | $13.7K | -$14.4K | -52.0% |
| Tower Research Capital LLC (TRC) | 608 | -442 | $13.3K | -$9.3K | -42.1% |
| SRS Capital Advisors, Inc. | 89 | -294 | $1.9K | -$6.3K | -76.8% |
| WOODMONT INVESTMENT COUNSEL LLC | 17,316 | -36 | $378.0K | +$5.5K | -0.2% |
| JPMORGAN CHASE & CO | 4,673 | -320 | $102.0K | -$5.2K | -6.4% |
| US BANCORP \DE\ | 114 | -174 | $2.5K | -$3.7K | -60.4% |
| IFP Advisors, Inc | 0 | 0 | $2.3K | +$2.3K | — |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 693 | -117 | $15.1K | -$2.3K | -14.4% |
| Central Pacific Bank - Trust Division | 6,000 | 0 | $131.0K | +$2.2K | 0.0% |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 5,214 | -21 | $113.8K | +$1.4K | -0.4% |
| Police & Firemen's Retirement System of New Jersey | 3,069 | 0 | $67.0K | +$1.1K | 0.0% |
| EverSource Wealth Advisors, LLC | 4 | -49 | $87 | -$1.1K | -92.5% |
| NEW YORK STATE COMMON RETIREMENT FUND | 2,709 | 0 | $59.1K | +$975 | 0.0% |
| FEDERATED HERMES, INC. | 19 | -31 | $415 | -$659 | -62.0% |
| HRT FINANCIAL LP | 43,090 | -19,043 | $940 | -$393 | -30.6% |
| Hughes Financial Services, LLC | 2 | -21 | $44 | -$373 | -91.3% |
| Ameritas Investment Partners, Inc. | 1,033 | 0 | $22.6K | +$371 | 0.0% |
| Farther Finance Advisors, LLC | 123 | -11 | $2.7K | -$192 | -8.2% |
| ADVISOR GROUP HOLDINGS, INC. | 167 | -2 | $3.6K | -$73 | -1.2% |
| NISA INVESTMENT ADVISORS, LLC | 203 | 0 | $4.4K | +$73 | 0.0% |
| Legal & General Group Plc | 2,553 | -46 | $55.7K | -$68 | -1.8% |
| Optiver Holding B.V. | 124 | 0 | $2.7K | +$45 | 0.0% |
| GAMMA Investing LLC | 7 | -2 | $153 | -$40 | -22.2% |
| WPG Advisers, LLC | 55 | 0 | $1.2K | +$20 | 0.0% |
| CWM, LLC | 322 | -492 | $7 | -$10 | -60.4% |
| Ronald Blue Trust, Inc. | 27 | 0 | $589 | +$9 | 0.0% |
| AMALGAMATED BANK | 354 | -82 | $8 | -$1 | -18.8% |
Sold Out(21)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| SBI Securities Co., Ltd. | 0 | -74,983 | $0 | -$37.7M | — |
| SCOGGIN MANAGEMENT LP | 0 | -225,000 | $0 | -$4.8M | — |
| WOLVERINE TRADING, LLC | 0 | -120,700 | $0 | -$2.6M | — |
| Y-Intercept (Hong Kong) Ltd | 0 | -31,400 | $0 | -$674.2K | — |
| Engineers Gate Manager LP | 0 | -27,051 | $0 | -$580.8K | — |
| AQR CAPITAL MANAGEMENT LLC | 0 | -19,459 | $0 | -$417.8K | — |
| Brooklyn Investment Group | 0 | -17,509 | $0 | -$375.9K | — |
| FourThought Financial Partners, LLC | 0 | -14,406 | $0 | -$309.3K | — |
| NJ State Employees Deferred Compensation Plan | 0 | -11,000 | $0 | -$236.2K | — |
| Walleye Capital LLC | 0 | -9,800 | $0 | -$210.4K | — |
| New Age Alpha Advisors, LLC | 0 | -4,238 | $0 | -$91.0K | — |
| Quantbot Technologies LP | 0 | -2,659 | $0 | -$57.1K | — |
| QUADRANT CAPITAL GROUP LLC | 0 | -1,185 | $0 | -$25.4K | — |
| Versant Capital Management, Inc | 0 | -362 | $0 | -$7.8K | — |
| CIBC Private Wealth Group, LLC | 0 | -226 | $0 | -$4.9K | — |
| Clearstead Advisors, LLC | 0 | -103 | $0 | -$2.2K | — |
| PRINCIPAL SECURITIES, INC. | 0 | -29 | $0 | -$623 | — |
| Fortitude Family Office, LLC | 0 | -20 | $0 | -$429 | — |
| True Wealth Design, LLC | 0 | -8 | $0 | -$172 | — |
| Advisory Services Network, LLC | 0 | -5 | $0 | -$107 | — |
| ROTHSCHILD INVESTMENT LLC | 0 | -5 | $0 | -$107 | — |
Top Holders by reported value
Ranked by the dollar value reported on the latest Form 13F. Share counts reflect long positions as of 2025-12-31.
| Manager | Shares | $ Value | Δ Shares | QoQ % |
|---|---|---|---|---|
| Owl Creek Asset Management, L.P. | 5,411,776 | $118.1M | 0 | 0.0% |
| Heard Capital LLC | 1,716,738 | $37.5M | -1,716,738 | -50.0% |
| BlackRock, Inc. | 1,018,275 | $22.2M | -13,460 | -1.3% |
| VANGUARD GROUP INC | 931,305 | $20.3M | -77,072 | -7.6% |
| QVT Financial LP | 503,941 | $11.0M | 0 | 0.0% |
| Jefferies Financial Group Inc. | 454,508 | $9.9M | +454,508 | — |
| MILLENNIUM MANAGEMENT LLC | 439,946 | $9.6M | +404,838 | 1153.1% |
| GAMCO INVESTORS, INC. ET AL | 422,470 | $9.2M | +102,400 | 32.0% |
| GARNET EQUITY CAPITAL HOLDINGS, INC. | 397,395 | $8.7M | 0 | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 360,139 | $7.9M | -1,190 | -0.3% |
| STATE STREET CORP | 333,788 | $7.3M | +17,017 | 5.4% |
| DIMENSIONAL FUND ADVISORS LP | 324,923 | $7.1M | +13,633 | 4.4% |
| GABELLI FUNDS LLC | 304,907 | $6.7M | +18,625 | 6.5% |
| MARSHALL WACE, LLP | 291,255 | $6.4M | +4,674 | 1.6% |
| AYAL Capital Advisors Ltd | 265,000 | $5.8M | +56,029 | 26.8% |
| Potomac Capital Management, Inc. | 187,900 | $4.1M | +187,900 | — |
| JANE STREET GROUP, LLC | 169,114 | $3.7M | +113,331 | 203.2% |
| Beartown Capital Management, LLC | 145,000 | $3.2M | +145,000 | — |
| BANK OF AMERICA CORP /DE/ | 143,124 | $3.1M | +6,635 | 4.9% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 138,677 | $3.0M | +599 | 0.4% |
New & Closed Positions this quarter
Closed Positions
21 managers exited
Top five by prior-quarter value
- SBI Securities Co., Ltd.$37.7M
- SCOGGIN MANAGEMENT LP$4.8M
- WOLVERINE TRADING, LLC$2.6M
- Y-Intercept (Hong Kong) Ltd$674.2K
- Engineers Gate Manager LP$580.8K
Methodology
Form 13F is the SEC's quarterly disclosure for institutional investment managers exercising discretion over $100 million or more in qualifying U.S. equity securities. Managers must file within 45 days of each calendar quarter end, which is why holdings shown here reflect a snapshot at the period date — not real-time positioning.
Quarter-over-quarter deltas compare each manager's most recently reported share count for ATEX against its prior-quarter count. New positions are entries where the prior count was zero; closed positions are entries where the current count is zero. Amendments (13F-HR/A) replace prior filings for the same period.
Source: SEC EDGAR Form 13F (XML information tables). Dollar values are as reported by the manager and may use mid-quarter pricing conventions. CUSIP-to-ticker resolution is best-effort.