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AtaiBeckley Inc
ATAI

129 hedge funds and large institutions have $231M invested in AtaiBeckley Inc in 2025 Q3 according to their latest regulatory filings, with 50 funds opening new positions, 33 increasing their positions, 14 reducing their positions, and 14 closing their positions.

New
Increased
Maintained
Reduced
Closed

262% more capital invested

Capital invested by funds: $63.9M → $231M (+$167M)

257% more first-time investments, than exits

New positions opened: 50 | Existing positions closed: 14

147% more call options, than puts

Call options by funds: $12.5M | Put options by funds: $5.08M

136% more repeat investments, than reductions

Existing positions increased: 33 | Existing positions reduced: 14

100% more funds holding in top 10

Funds holding in top 10: 1 → 2 (+1)

39% more funds holding

Funds holding: 93 → 129 (+36)

5.82% more ownership

Funds ownership: 14.56% → 20.37% (+5.8%)

Holders
129
Holders Change
+36
Holders Change %
+38.71%
% of All Funds
1.69%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.03%
New
50
Increased
33
Reduced
14
Closed
14
Calls
$12.5M
Puts
$5.08M
Net Calls
+$7.46M
Net Calls Change
+$6.97M

Top Buyers

Rank Fund Capital Flow
1
ABG
Ally Bridge Group
New York
+$9.29M
2
AIM
ARK Investment Management
Florida
+$8.2M
3
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
+$7.88M
4
Citadel Advisors
Citadel Advisors
Florida
+$5.67M
5
Morgan Stanley
Morgan Stanley
New York
+$5.37M

Top Sellers

Rank Fund Capital Flow
1
PFCS
Pale Fire Capital SE
Czech Republic
-$6.33M
2
PEAK6
PEAK6
Illinois
-$847K
3
Franklin Resources
Franklin Resources
California
-$780K
4
WP
Woodline Partners
California
-$637K
5
Two Sigma Investments
Two Sigma Investments
New York
-$594K
Name Holding Trade Value Shares
Change 		Change in
Stake
O
26
OrbiMed
New York
$1.84M +$1.41M +347,000 New
American Century Companies
27
American Century Companies
Missouri
$1.31M +$1.01M +247,869 New
Geode Capital Management
28
Geode Capital Management
Massachusetts
$1.28M +$398K +97,975 +68%
Bank of America
29
Bank of America
North Carolina
$1.21M +$481K +118,385 +108%
Sumitomo Mitsui Trust Group
30
Sumitomo Mitsui Trust Group
Japan
$1.07M +$823K +202,781 New
NAMA
31
Nikko Asset Management Americas
New York
$1.07M +$823K +202,781 New
CCM
32
Catalio Capital Management
New York
$1.04M – – –
Rockefeller Capital Management
33
Rockefeller Capital Management
New York
$947K +$727K +179,000 New
N
34
Numerai
California
$814K +$625K +153,800 New
Squarepoint
35
Squarepoint
New York
$802K +$616K +151,664 New
State Street
36
State Street
Massachusetts
$754K +$256K +63,015 +79%
Simplex Trading
37
Simplex Trading
Illinois
$728K +$236K +58,109 +73%
Balyasny Asset Management
38
Balyasny Asset Management
Illinois
$629K +$483K +118,874 New
Wealth Enhancement Advisory Services
39
Wealth Enhancement Advisory Services
Minnesota
$608K +$446K +109,787 New
Barclays
40
Barclays
United Kingdom
$516K -$273K -67,349 -41%
HighTower Advisors
41
HighTower Advisors
Illinois
$420K +$212K +52,135 +192%
Raymond James Financial
42
Raymond James Financial
Florida
$406K +$101K +24,946 +48%
SC
43
Stempoint Capital
New York
$402K +$309K +76,032 New
Qube Research & Technologies (QRT)
44
Qube Research & Technologies (QRT)
United Kingdom
$370K +$284K +69,885 New
TD Asset Management
45
TD Asset Management
Ontario, Canada
$363K +$278K +68,576 New
SC
46
Shay Capital
New York
$360K +$276K +68,000 New
Citigroup
47
Citigroup
New York
$339K +$241K +59,414 +1,247%
DAM
48
DLD Asset Management
New York
$317K +$244K +60,000 New
QCM
49
Quantinno Capital Management
New York
$308K – – –
SG Americas Securities
50
SG Americas Securities
New York
$283K +$171K +42,021 +367%
1
2
3 4 5

ATAI Hedge Fund Activity: Q3 2025 in Review

129 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in AtaiBeckley Inc (ATAI) for Q3 2025, worth a combined $231M — up 262% from $63.9M a quarter earlier.

Buyers outnumbered sellers: 50 funds opened new ATAI positions and 14 closed out — a net gain of 36 holders — while 33 added to existing stakes and 14 trimmed.

The largest buyer was Ally Bridge Group, opening a new position worth an estimated $9.29M. The largest seller was Pale Fire Capital SE, cutting an estimated $6.33M.

  • 129 institutional investors held AtaiBeckley Inc (ATAI) as of Q3 2025, up from 93 in Q2 2025.
  • Funds reported $231M of AtaiBeckley Inc stock for Q3 2025, up 262% quarter-over-quarter.
  • 50 funds opened new AtaiBeckley Inc positions in Q3 2025 and 14 closed out, a net change of +36 holders.
  • The largest AtaiBeckley Inc buyer in Q3 2025 was Ally Bridge Group, an estimated $9.29M added.
  • The largest AtaiBeckley Inc seller in Q3 2025 was Pale Fire Capital SE, an estimated $6.33M sold.

Based on aggregated 13F filings for Q3 2025.