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ATAI

AtaiBeckley Inc
ATAI

Delisted

ATAI was delisted on the 10th of September, 2026.

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Name Holding Trade Value Shares
Change 		Change in
Stake
AWG
1
Alpha Wave Global
New York
$48.6M +$48.5M +2,626,473 New
PVI
2
Pura Vida Investments
New York
$23.2M +$25.3M +1,371,824 New
Morgan Stanley
3
Morgan Stanley
New York
$18.9M +$18.9M +1,023,489 New
WP
4
Woodline Partners
California
$14.6M +$14.6M +791,585 New
Citadel Advisors
5
Citadel Advisors
Florida
$12.1M +$12M +651,488 New
T. Rowe Price Associates
6
T. Rowe Price Associates
Maryland
$12M +$12M +650,000 New
Millennium Management
7
Millennium Management
New York
$9.61M +$9.6M +519,486 New
GGHC
8
Gilder Gagnon Howe & Co
New York
$8.09M +$8.08M +437,373 New
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
9
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$7.78M +$7.77M +420,500 New
BU
10
Brown University
Rhode Island
$7.21M +$7.2M +390,000 New
APM
11
Avidity Partners Management
Texas
$6.49M +$6.48M +350,987 New
ECM
12
Element Capital Management
New York
$6.38M +$6.37M +345,000 New
RSCM
13
Rock Springs Capital Management
Maryland
$5.83M +$5.82M +315,028 New
AC
14
Antara Capital
New York
$5.51M +$4.77M +258,080 New
NM
15
Newtyn Management
New York
$3.61M +$4.71M +255,136 New
Alyeska Investment Group
16
Alyeska Investment Group
Illinois
$3.24M +$3.23M +175,000 New
ECP
17
Empyrean Capital Partners
California
$2.77M +$2.77M +150,000 New
Walleye Capital
18
Walleye Capital
New York
$2.77M +$2.77M +150,000 New
Geode Capital Management
19
Geode Capital Management
Massachusetts
$2.01M +$2.01M +108,543 New
NAM
20
Nexpoint Asset Management
Texas
$1.67M +$1.66M +90,000 New
KPF
21
K2 Principal Fund
Ontario, Canada
$1.58M +$1.97M +106,672 New
MIM
22
Monashee Investment Management
Massachusetts
$1.48M +$1.48M +80,000 New
HM
23
HealthCor Management
New York
$1.39M +$1.39M +75,000 New
PCM
24
Pinz Capital Management
New York
$892K +$890K +48,200 New
TD Asset Management
25
TD Asset Management
Ontario, Canada
$722K +$860K +46,574 New
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