Latest Institutional Purchases of Atai Life Sciences N.V. (ATAI)
This list provides information on the latest institutional transactions involving Atai Life Sciences N.V. (ATAI) stock that were buys. The list includes the name of the institution, the number of shares exchanged, the range of values for the transaction, and the number of shares held by the institution after the purchase has occurred.
| Report Date | Institution (Fund) | Operation | Option | Shares change | Value Range | Shares Held | Trade History |
|---|---|---|---|---|---|---|---|
|
Jan 13, 2026
Q4 2025
|
Stableford Capital Ii LLC
Scottsdale, AZ |
BUY
|
- |
292KNew |
$1.17M - $1.88M
|
292K
$1.17M
|
|
|
Jan 28, 2026
Q4 2025
|
Klp Kapitalforvaltning As
Oslo, Q8 |
BUY
|
- |
69.8KNew |
$279K - $450K
|
69.8K
$279K
|
|
|
Jan 28, 2026
Q4 2025
|
Caprock Group, Inc.
|
BUY
|
- |
52.1KNew |
$208K - $336K
|
52.1K
$208K
|
|
|
Jan 27, 2026
Q4 2025
|
Zurcher Kantonalbank (Zurich Cantonalbank)
Zurich, V8 |
BUY
|
- |
46.4KNew |
$186K - $299K
|
46.4K
$186K
|
|
|
Jan 28, 2026
Q4 2025
|
Arizona State Retirement System
|
BUY
|
- |
46.1KNew |
$184K - $297K
|
46.1K
$184K
|
|
|
Jan 28, 2026
Q4 2025
|
Teacher Retirement System Of Texas
Austin, TX |
BUY
|
- |
24.5KNew |
$98.2K - $158K
|
24.5K
$98.2K
|
|
|
Jan 29, 2026
Q4 2025
|
Pictet Asset Management Holding Sa
Carouge, V8 |
BUY
|
- |
22.3KNew |
$89K - $144K
|
22.3K
$89K
|
|
|
Jan 26, 2026
Q4 2025
|
Mirae Asset Global Investments Co., Ltd.
|
BUY
|
- |
17.6KNew |
$70.6K - $114K
|
17.6K
$70.6K
|
|
|
Jan 15, 2026
Q4 2025
|
Victory Financial Group, LLC
Austin, TX |
BUY
|
- |
6.5K+ 54.85% |
$26K - $41.9K
|
18.3K
$73.4K
|
|
| Q3 2025 | |||||||
|
Nov 14, 2025
Q3 2025
|
Ally Bridge Group (Ny) LLC
New York, NY |
BUY
|
- |
2.29MNew |
$5.99M - $12.8M
|
2.29M
$9.15M
|
|
|
Nov 12, 2025
Q3 2025
|
Cathie Wood
Ark Investment Management LLC | St. Petersburg, Fl
|
BUY
|
- |
2.02MNew |
$5.29M - $11.3M
|
2.02M
$8.08M
|
|
|
Nov 14, 2025
Q3 2025
|
T. Rowe Price Investment Management, Inc.
Baltimore, MD |
BUY
|
- |
1.94MNew |
$5.08M - $10.9M
|
1.94M
$7.76M
|
|
|
Nov 14, 2025
Q3 2025
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
BUY
|
- |
1.4M+ 118.39% |
$3.66M - $7.83M
|
2.58M
$10.3M
|
|
|
Nov 14, 2025
Q3 2025
|
Morgan Stanley
New York, NY |
BUY
|
- |
1.32M+ 37.81% |
$3.46M - $7.41M
|
4.82M
$19.3M
|
|
|
Nov 14, 2025
Q3 2025
|
Adar1 Capital Management, LLC
Austin, TX |
BUY
|
- |
913KNew |
$2.39M - $5.12M
|
913K
$3.65M
|
|
|
Nov 13, 2025
Q3 2025
|
Marshall Wace, LLP
London, X0 |
BUY
|
- |
786K+ 280.84% |
$2.06M - $4.41M
|
1.07M
$4.26M
|
|
|
Nov 07, 2025
Q3 2025
|
Jpmorgan Chase & CO
New York, NY |
BUY
|
- |
756K+ 5629.6% |
$1.98M - $4.24M
|
770K
$3.08M
|
|
|
Nov 07, 2025
Q3 2025
|
Center Book Partners LP
Greenwich, CT |
BUY
|
- |
651KNew |
$1.71M - $3.65M
|
651K
$2.6M
|
|
|
Nov 13, 2025
Q3 2025
|
Peak6 LLC
Chicago, IL |
BUY
|
CALL |
629KNew |
$1.65M - $3.53M
|
629K
$2.51M
|
|
|
Nov 12, 2025
Q3 2025
|
Group One Trading, L.P.
Chicago, IL |
BUY
|
- |
563K+ 1490.62% |
$1.47M - $3.16M
|
601K
$2.4M
|
|
|
Nov 13, 2025
Q3 2025
|
Jane Street Group, LLC
New York, NY |
BUY
|
- |
501K+ 518.68% |
$1.31M - $2.81M
|
597K
$2.39M
|
|
|
Nov 14, 2025
Q3 2025
|
Fred Alger Management, LLC
New York, NY |
BUY
|
- |
489KNew |
$1.28M - $2.74M
|
489K
$1.96M
|
|
|
Nov 14, 2025
Q3 2025
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
BUY
|
- |
450KNew |
$1.18M - $2.52M
|
450K
$1.8M
|
|
|
Nov 14, 2025
Q3 2025
|
Hrt Financial LP
New York, NY |
BUY
|
- |
401KNew |
$1.05M - $2.25M
|
401K
$1.61M
|
|
|
Nov 14, 2025
Q3 2025
|
Orbimed Advisors LLC
San Diego, CA |
BUY
|
- |
347KNew |
$909K - $1.95M
|
347K
$1.39M
|
|
|
Nov 12, 2025
Q3 2025
|
American Century Companies Inc
Kansas City, MO |
BUY
|
- |
248KNew |
$649K - $1.39M
|
248K
$991K
|
|
|
Nov 12, 2025
Q3 2025
|
Nikko Asset Management Americas, Inc.
|
BUY
|
- |
203KNew |
$531K - $1.14M
|
203K
$811K
|
|
|
Oct 27, 2025
Q3 2025
|
Sumitomo Mitsui Trust Holdings, Inc.
|
BUY
|
- |
203KNew |
$531K - $1.14M
|
203K
$811K
|
|
|
Nov 14, 2025
Q3 2025
|
Rockefeller Capital Management L.P.
New York, NY |
BUY
|
- |
179KNew |
$469K - $1M
|
179K
$716K
|
|
|
Nov 14, 2025
Q3 2025
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
BUY
|
PUT |
166K+ 122.53% |
$435K - $931K
|
301K
$1.21M
|
|
|
Nov 14, 2025
Q3 2025
|
Numerai Gp LLC
San Francisco, CA |
BUY
|
- |
154KNew |
$403K - $863K
|
154K
$615K
|
|
|
Nov 14, 2025
Q3 2025
|
Squarepoint Ops LLC
New York, NY |
BUY
|
- |
152KNew |
$397K - $851K
|
152K
$607K
|
|
|
Nov 14, 2025
Q3 2025
|
Balyasny Asset Management LLC
Chicago, IL |
BUY
|
- |
119KNew |
$311K - $667K
|
119K
$475K
|
|
|
Nov 14, 2025
Q3 2025
|
Bank Of America Corp
Charlotte, NC |
BUY
|
- |
118K+ 107.72% |
$310K - $664K
|
228K
$913K
|
|
|
Nov 14, 2025
Q3 2025
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
BUY
|
PUT |
117K+ 147.36% |
$307K - $658K
|
197K
$788K
|
|
|
Nov 05, 2025
Q3 2025
|
Advisor Shares Investments LLC
Bethesda, MD |
BUY
|
- |
117K+ 29.9% |
$305K - $654K
|
506K
$2.03M
|
|
|
Nov 14, 2025
Q3 2025
|
Goldman Sachs Group Inc
New York, NY |
BUY
|
- |
101K+ 29.09% |
$265K - $568K
|
449K
$1.8M
|
|
|
Nov 12, 2025
Q3 2025
|
Geode Capital Management, LLC
Boston, MA |
BUY
|
- |
98K+ 67.86% |
$257K - $550K
|
242K
$969K
|
|
|
Nov 14, 2025
Q3 2025
|
Stem Point Capital LP
New York, NY |
BUY
|
- |
76KNew |
$199K - $427K
|
76K
$304K
|
|
|
Nov 14, 2025
Q3 2025
|
Qube Research & Technologies LTD
London, X0 |
BUY
|
- |
69.9KNew |
$183K - $392K
|
69.9K
$280K
|
|
|
Nov 10, 2025
Q3 2025
|
Td Asset Management Inc
|
BUY
|
- |
68.6KNew |
$180K - $385K
|
68.6K
$274K
|
|
|
Nov 14, 2025
Q3 2025
|
Shay Capital LLC
New York, NY |
BUY
|
- |
68KNew |
$178K - $381K
|
68K
$272K
|
|
|
Nov 14, 2025
Q3 2025
|
State Street Corp
Boston, MA |
BUY
|
- |
63K+ 79.22% |
$165K - $354K
|
143K
$570K
|
|
|
Nov 12, 2025
Q3 2025
|
Dld Asset Management, LP
New York, NY |
BUY
|
- |
60KNew |
$157K - $337K
|
60K
$240K
|
|
|
Nov 10, 2025
Q3 2025
|
Citigroup Inc
|
BUY
|
- |
59.4K+ 1247.41% |
$156K - $333K
|
64.2K
$257K
|
|
|
Nov 12, 2025
Q3 2025
|
Simplex Trading, LLC
|
BUY
|
- |
58.1K+ 73.06% |
$152K - $326K
|
138K
$551K
|
|
|
Nov 05, 2025
Q3 2025
|
Iq Eq Fund Management (Ireland) LTD
|
BUY
|
- |
52.4KNew |
$137K - $294K
|
52.4K
$210K
|
|
|
Nov 06, 2025
Q3 2025
|
High Tower Advisors, LLC
Chicago, IL |
BUY
|
- |
52.1K+ 191.52% |
$137K - $292K
|
79.4K
$317K
|
|
|
Nov 19, 2025
Q3 2025
|
Captrust Financial Advisors
Raleigh, NC |
BUY
|
- |
50KNew |
$131K - $281K
|
50K
$200K
|
|
|
Nov 10, 2025
Q3 2025
|
Thoroughbred Financial Services, LLC
|
BUY
|
- |
47.2KNew |
$124K - $265K
|
47.2K
$189K
|
|