ATXS (ATXS) Institutional Ownership Changes & 13F Activity
ATXS. Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Perceptive Advisors Llc, Magnetar Financial Llc, Alliancebernstein L.P., Balyasny Asset Management L.P., and Qube Research & Technologies Ltd.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Cornerstone Financial Management Llc | Buy | +78 | — | 78 | $1.02K | Q4 2025 | Aug 28, 2026 |
| Hsbc Holdings Plc | Buy | +24,655 | — | 24,655 | $323.23K | Q4 2025 | Mar 06, 2026 |
| Seven Fleet Capital Management Lp | Buy | +4,000 | — | 4,000 | $52.36K | Q4 2025 | Feb 26, 2026 |
| Perceptive Advisors Llc | Buy | +6,485,420 | — | 6,485,420 | $84.89M | Q4 2025 | Feb 17, 2026 |
| Magnetar Financial Llc | Buy | +3,431,007 | — | 3,431,007 | $44.91M | Q4 2025 | Feb 17, 2026 |
| Alliancebernstein L.P. | Buy | +1,732,464 | — | 1,732,464 | $22.68M | Q4 2025 | Feb 17, 2026 |
| Balyasny Asset Management L.P. | Buy | +1,636,921 | — | 1,636,921 | $21.43M | Q4 2025 | Feb 17, 2026 |
| Qube Research & Technologies Ltd | Buy | +1,057,230 | — | 1,057,230 | $13.84M | Q4 2025 | Feb 17, 2026 |
| Man Group Plc | Buy | +977,202 | — | 977,202 | $12.79M | Q4 2025 | Feb 17, 2026 |
| Adage Capital Partners Gp, L.L.C. | Buy | +900,000 | — | 900,000 | $11.78M | Q4 2025 | Feb 17, 2026 |
| Tudor Investment Corp Et Al | Buy | +875,000 | — | 875,000 | $11.45M | Q4 2025 | Feb 17, 2026 |
| Lmr Partners Llp | Buy | +840,000 | — | 840,000 | $11.00M | Q4 2025 | Feb 17, 2026 |
| Birnam Oak Advisors, Lp | Buy | +689,735 | — | 689,735 | $9.03M | Q4 2025 | Feb 17, 2026 |
| Aqr Arbitrage Llc | Buy | +627,293 | — | 627,293 | $8.21M | Q4 2025 | Feb 17, 2026 |
| Water Island Capital Llc | Buy | +615,790 | — | 615,790 | $8.06M | Q4 2025 | Feb 17, 2026 |
| Millennium Management Llc | Buy | +534,054 | — | 534,054 | $6.99M | Q4 2025 | Feb 17, 2026 |
| Prelude Capital Management, Llc | Buy | +529,021 | — | 529,021 | $6.92M | Q4 2025 | Feb 17, 2026 |
| Northern Trust Corp | Buy | +356,779 | — | 356,779 | $4.67M | Q4 2025 | Feb 17, 2026 |
| Sphera Funds Management Ltd. | Buy | +355,725 | — | 355,725 | $4.66M | Q4 2025 | Feb 17, 2026 |
| Oddo Bhf Asset Management Sas | Buy | +317,300 | — | 317,300 | $4.15M | Q4 2025 | Feb 17, 2026 |
| Dafna Capital Management Llc | Buy | +304,775 | — | 304,775 | $3.99M | Q4 2025 | Feb 17, 2026 |
| Alberta Investment Management Corp | Buy | +272,750 | — | 272,750 | $3.57M | Q4 2025 | Feb 17, 2026 |
| Schonfeld Strategic Advisors Llc | Buy | +242,952 | — | 242,952 | $3.18M | Q4 2025 | Feb 17, 2026 |
| Cantor Fitzgerald, L. P. | Buy | +224,077 | — | 224,077 | $2.93M | Q4 2025 | Feb 17, 2026 |
| Adar1 Capital Management, Llc | Buy | +173,557 | — | 173,557 | $2.27M | Q4 2025 | Feb 17, 2026 |
| Citadel Advisors Llc | Buy | +113,555 | — | 113,555 | $1.49M | Q4 2025 | Feb 17, 2026 |
| Bank Of America Corp | Buy | +83,041 | — | 83,041 | $1.09M | Q4 2025 | Feb 17, 2026 |
| Css Llc/Il | Buy | +67,422 | — | 67,422 | $882.55K | Q4 2025 | Feb 17, 2026 |
| Exoduspoint Capital Management, Lp | Buy | +48,636 | — | 48,636 | $636.64K | Q4 2025 | Feb 17, 2026 |
| Pdt Partners, Llc | Buy | +41,108 | — | 41,108 | $538.10K | Q4 2025 | Feb 17, 2026 |
Frequently asked questions about ATXS activity
Which institutional owners are buying ATXS?
Institutional owners buying ATXS include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in ATXS activity?
"Buy" means an investor increased their reported position in ATXS compared to the prior reporting period. This reflects growing exposure to ATXS rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in ATXS increasing?
Institutional interest in ATXS can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.