AtaiBeckley Inc
ATAI
183 hedge funds and large institutions have $355M invested in AtaiBeckley Inc in 2026 Q1 according to their latest regulatory filings, with 75 funds opening new positions, 37 increasing their positions, 30 reducing their positions, and 27 closing their positions.
574% more call options, than puts
Call options by funds: $8.8M | Put options by funds: $1.31M
178% more first-time investments, than exits
New positions opened: 75 | Existing positions closed: 27
56% more capital invested
Capital invested by funds: $228M → $355M (+$127M)
33% more funds holding
Funds holding: 138 → 183 (+45)
23% more repeat investments, than reductions
Existing positions increased: 37 | Existing positions reduced: 30
12.16% more ownership
Funds ownership: 15.33% → 27.5% (+12%)
50% less funds holding in top 10
Funds holding in top 10: 4 → 2 (-2)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
UBS Group
Zurich,
Switzerland
|
+$28M |
| 2 |
DTC
Deep Track Capital
Greenwich,
Connecticut
|
+$27.6M |
| 3 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$17.6M |
| 4 |
Millennium Management
New York
|
+$16.4M |
| 5 |
BlackRock
New York
|
+$15.1M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AIM
ARK Investment Management
St. Petersburg,
Florida
|
-$13.5M |
| 2 |
ABG
Ally Bridge Group
New York
|
-$7.01M |
| 3 |
HF
HRT Financial
New York
|
-$6.01M |
| 4 |
Adage Capital Partners
Boston,
Massachusetts
|
-$5.41M |
| 5 |
Citadel Advisors
Miami,
Florida
|
-$5.16M |
ATAI Hedge Fund Activity: Q1 2026 in Review
183 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in AtaiBeckley Inc (ATAI) for Q1 2026, worth a combined $355M — up 56% from $228M a quarter earlier.
Buyers outnumbered sellers: 75 funds opened new ATAI positions and 27 closed out — a net gain of 48 holders — while 37 added to existing stakes and 30 trimmed.
The largest buyer was UBS Group, opening a new position worth an estimated $28M. The largest seller was ARK Investment Management, exiting entirely with an estimated $13.5M sold.
- 183 institutional investors held AtaiBeckley Inc (ATAI) as of Q1 2026, up from 138 in Q4 2025.
- Funds reported $355M of AtaiBeckley Inc stock for Q1 2026, up 56% quarter-over-quarter.
- 75 funds opened new AtaiBeckley Inc positions in Q1 2026 and 27 closed out, a net change of +48 holders.
- The largest AtaiBeckley Inc buyer in Q1 2026 was UBS Group, an estimated $28M added.
- The largest AtaiBeckley Inc seller in Q1 2026 was ARK Investment Management, an estimated $13.5M sold.
Based on aggregated 13F filings for Q1 2026.