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ATAI Life Sciences
ATAI

Overview Fund Activity

93 hedge funds and large institutions have $63.9M invested in ATAI Life Sciences in 2025 Q2 according to their latest regulatory filings, with 23 funds opening new positions, 19 increasing their positions, 22 reducing their positions, and 7 closing their positions.

Holders
93
Holders Change
+14
Holders Change %
+17.72%
% of All Funds
1.25%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
%
% of All Funds
0.01%
New
23
Increased
19
Reduced
22
Closed
7
Calls
$461K
Puts
$675K
Net Calls
-$214K
Net Calls Change
-$1.1M

Top Buyers

1
Adage Capital Partners
1
Adage Capital Partners
Massachusetts
$11.9M
2
UBS Group
2
UBS Group
Switzerland
$16.9M
3
Citadel Advisors
3
Citadel Advisors
Florida
$2.58M
4
Marshall Wace
4
Marshall Wace
United Kingdom
$613K
5
Goldman Sachs
5
Goldman Sachs
New York
$762K

Top Sellers

1
DKCM
1
Davidson Kempner Capital Management
New York
$0
2
BC
2
BIT Capital
Germany
$50.8K
3
BlackRock
3
BlackRock
New York
$9.64K
4
D.E. Shaw & Co
4
D.E. Shaw & Co
New York
$1.52M
5
Citigroup
5
Citigroup
New York
$10.4K
Name Market Value Shares Shares
Change 		Shares
Change %
CIAM
76
Caitong International Asset Management
Hong Kong
$8.99K 4,106 +2,666 +185%
EWM
77
Evolution Wealth Management
Florida
$8.8K 4,016 +4,016 New
FDCDDQ
78
Federation des caisses Desjardins du Quebec
Quebec, Canada
$6.9K 3,150 – –
SS
79
SBI Securities
Japan
$4.72K 2,154 -7,188 -77%
PG
80
Proffitt & Goodson
Tennessee
$4.38K 2,000 +2,000 New
WIM
81
Westside Investment Management
California
$3.26K 1,250 – –
National Bank of Canada
82
National Bank of Canada
Quebec, Canada
$2.84K 1,301 +564 +77%
GRP
83
Global Retirement Partners
California
$2.37K 1,080 +1,080 New
Osaic Holdings
84
Osaic Holdings
Arizona
$1.72K 1,292 -25,866 -95%
CSC
85
Caldwell Sutter Capital
California
$1.1K 500 – –
TWC
86
TD Waterhouse Canada
Ontario, Canada
$1.08K 400 – –
MCM
87
MAI Capital Management
Ohio
$657 300 – –
PS
88
Principal Securities
Iowa
$502 229 +229 New
HI
89
Harbour Investments
Wisconsin
$438 200 +200 New
GWSA
90
Global Wealth Strategies & Associates
Colorado
$276 126 +126 New
Russell Investments Group
91
Russell Investments Group
United Kingdom
$206 94 +94 New
RIL
92
Rothschild Investment LLC
Illinois
$110 50 – –
AF
93
Allworth Financial
California
$110 50 +50 New
DKCM
94
Davidson Kempner Capital Management
New York
– – -1,413,443 Closed
SC
95
Shay Capital
New York
– – -175,448 Closed
American Century Companies
96
American Century Companies
Missouri
– – -37,981 Closed
Commonwealth Equity Services
97
Commonwealth Equity Services
Massachusetts
– – -29,157 Closed
CSS
98
Cubist Systematic Strategies
Connecticut
– – -14,680 Closed
WAP
99
Wealthcare Advisory Partners
Pennsylvania
– – -10,000 Closed
PWA
100
Principia Wealth Advisory
Texas
– – -4,267 Closed
1 2 3
4
5