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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.

New
Increased
Maintained
Reduced
Closed

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)

Holders
183
Holders Change
+45
Holders Change %
+32.61%
% of All Funds
2.25%
Holding in Top 10
2
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-50%
% of All Funds
0.02%
New
75
Increased
37
Reduced
30
Closed
27
Calls
$8.8M
Puts
$1.31M
Net Calls
+$7.5M
Net Calls Change
+$2.58M

Top Buyers

Rank Fund Capital Flow
1
UBS Group
UBS Group
Switzerland
+$28M
2
DTC
Deep Track Capital
Connecticut
+$27.6M
3
Susquehanna International Group
Susquehanna International Group
Pennsylvania
+$17.6M
4
Millennium Management
Millennium Management
New York
+$16.4M
5
BlackRock
BlackRock
New York
+$15.1M

Top Sellers

Rank Fund Capital Flow
1
AIM
ARK Investment Management
Florida
-$13.5M
2
ABG
Ally Bridge Group
New York
-$7.01M
3
HF
HRT Financial
New York
-$6.01M
4
Adage Capital Partners
Adage Capital Partners
Massachusetts
-$5.41M
5
Citadel Advisors
Citadel Advisors
Florida
-$5.16M
Name Holding Trade Value Shares
Change 		Change in
Stake
Point72 Asset Management
26
Point72 Asset Management
Connecticut
$2.35M -$1.02M -270,988 -29%
Ameriprise
27
Ameriprise
Minnesota
$2.19M -$4.2M -1,116,632 -64%
WP
28
Woodline Partners
California
$2.12M – – –
AI
29
AdvisorShares Investments
Maryland
$2.01M +$71.5K +18,984 +3%
Sumitomo Mitsui Trust Group
30
Sumitomo Mitsui Trust Group
Japan
$2.01M +$2.14M +567,576 New
NAMA
31
Nikko Asset Management Americas
New York
$2M +$400K +106,140 +23%
Man Group
32
Man Group
United Kingdom
$1.92M +$1.15M +304,764 +128%
Northern Trust
33
Northern Trust
Illinois
$1.9M +$1.56M +413,990 +334%
Goldman Sachs
34
Goldman Sachs
New York
$1.84M -$1.54M -409,108 -44%
Squarepoint
35
Squarepoint
New York
$1.66M +$433K +115,008 +32%
OAM
36
OP Asset Management
$1.5M +$1.6M +423,674 New
O
37
OrbiMed
New York
$1.23M +$1.31M +347,000 New
Swiss National Bank
38
Swiss National Bank
Switzerland
$1.15M – – –
AC
39
Axon Capital
New York
$1.08M +$1.15M +305,802 New
BGIM
40
Boussard & Gavaudan Investment Management
United Kingdom
$1.03M +$1.11M +295,264 New
SCI
41
Stableford Capital II
Arizona
$1.01M -$19.9K -5,276 -2%
JFG
42
Jefferies Financial Group
New York
$977K +$1.04M +275,900 New
BMS
43
Brummer Multi-Strategy
Sweden
$975K +$152K +40,494 +17%
UBS AM
44
UBS AM
Illinois
$942K +$288K +76,500 +40%
JG
45
Jain Global
New York
$864K +$820K +217,762 +824%
BHCM
46
Brevan Howard Capital Management
Jersey
$839K +$892K +236,942 New
VA
47
Verdad Advisers
Massachusetts
$806K +$857K +227,670 New
CCM
48
Catalio Capital Management
New York
$697K – – –
Hudson Bay Capital Management
49
Hudson Bay Capital Management
Connecticut
$667K +$710K +188,485 New
IEFM
50
IQ EQ Fund Management
Ireland
$666K +$251K +66,604 +55%
1
2
3 4 5

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.