Who owns ATAI
176 institutions reported holding ATAI for 2026Q1, together 27% of the company, more than the 20 a quarter earlier.
176
Institutions reporting a position · as of 2026Q1 · up from 20 the quarter before
- Shares held by institutions
- 98.5M
Shares held by institutions · 27% of the company · long US equity positions only, as reported on Form 13F
- Reported value
- $349M
Reported value · at 2026-03-31 prices, not today's
- Top 5 holders
- 12%
Top 5 holders · of the whole company, between five filers
Details›
- Reporting quarter2026-03-31
- 2026Q1
- Quarters on record
- 2
- New positions
- 159
- Positions exited
- 7
- Added to
- 6
- Reduced
- 2
- Top 10 holdersof the company
- 18%
| Holder | Shares | % of company | Value |
|---|---|---|---|
| VANGUARD GROUP INC | 13.3M | 3.6% | $47M |
| Deep Track Capital, LP | 12.0M | 3.3% | $42M |
| UBS Group AG | 7.4M | 2.0% | $26M |
| BlackRock Inc. | 6.8M | 1.9% | $24M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 5.6M | 1.5% | $20M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 5.3M | 1.4% | $19M |
| MILLENNIUM MANAGEMENT LLC | 4.4M | 1.2% | $15M |
| MORGAN STANLEY | 3.9M | 1.0% | $14M |
| Candriam S.C.A. | 3.1M | 0.84% | $11M |
| Qube Research & Technologies Ltd | 2.9M | 0.78% | $10M |
SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.
reading the register…