Atai Beckley N.V (ATAI) ownership: Top institutional holder: Deep Track Capital, LP ($42.48M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| Deep Track Capital, LP | 12000000.00 | $42.48M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 11761398.00 | $41.64M | 2026-03-31 |
| UBS Group AG | 7426867.00 | $26.29M | 2026-03-31 |
| BlackRock, Inc. | 6835300.00 | $24.20M | 2026-03-31 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 5642758.00 | $19.98M | 2026-03-31 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 5286326.00 | $18.71M | 2026-03-31 |
| MILLENNIUM MANAGEMENT LLC | 4364096.00 | $15.45M | 2026-03-31 |
| MORGAN STANLEY | 3852772.00 | $13.64M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.