Atai Life Sciences

ATAI • NASDAQ

Atai Life Sciences is a biotechnology company in the healthcare sector on NASDAQ, led by Srinivas Rao, with a market cap of $1.6B. As of Q3 2025, 19% of shares are held by 127 institutional investors, with UBS Group AG as the largest holder at 3.28%.

Co-Chief Executive OfficerSrinivas Rao

Market Cap$1.6B

Biotechnology

Healthcare

Employees83.0

Websiteatai.life

Country

United States of America

Overview

Overview of institutional ownership in ATAI as of Q3 2025 with a market cap of $1.2B

All Institutions

Institutions: 127
Value Held: $231.0M
Shares Held: 43.7M
Avg Position: $1.8M
Median Position: $155.4K

Hedge Funds

Hedge Funds: 17
Value Held: $52.3M
Shares Held: 9.9M
Avg Position: $3.1M
Median Position: $813.6K

Ownership Breakdown

Institutional (non-HF)

14.45%

$178.7M

Hedge Funds

4.23%

$52.3M

Retail & Other

81.32%

$1.0B

Based on market cap of $1.2B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in ATAI as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
UBS Group AG Institution	Sergio P. Ermotti CEO	$40.6M 0.01% of portfolio	3.28% 7.7M shares	Q2 2021 Held for 4y 5m	$511.54B
A ADAGE CAPITAL PARTNERS GP LLC Institution	-	$28.7M 0.05% of portfolio	2.32% 5.4M shares	Q2 2025 Held for 5 months	$63.0B
MORGAN STANLEY RIA/Wealth	Jed Finn CEO	$25.5M 0.00% of portfolio	2.06% 4.8M shares	Q2 2021 Held for 4y 5m	$1.65T
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	Kenneth Cordele Griffin CEO	$13.6M 0.01% of portfolio	1.10% 2.6M shares	Q2 2021 Held for 4y 5m	$122.08B
Ally Bridge Group LLC Hedge Fund•Sector	Slanix Paul T Alex President	$12.1M 10.13% of portfolio	0.98% 2.3M shares	Q3 2025 Held for 2 months	$119.4M
ARK Investment Management LLC ETF Provider	Catherine Duddy Wood CEO	$10.7M 0.06% of portfolio	0.86% 2.0M shares	Q3 2025 Held for 2 months	$16.5B
T T. Rowe Price Investment Management, Inc. Insurance Manager	John Edward Robison President	$10.3M 0.01% of portfolio	0.83% 1.9M shares	Q3 2025 Held for 2 months	$161.58B
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	Dan Michael Berkovitz Chairman	$5.8M 0.00% of portfolio	0.47% 1.1M shares	Q2 2021 Held for 4y 5m	$121.98B
P Pale Fire Capital SE Institution	-	$5.7M 0.63% of portfolio	0.46% 1.1M shares	Q2 2024 Held for 1y 5m	$912.4M
Marshall Wace LLP Institution	Diana Lj Harrison President	$5.6M 0.01% of portfolio	0.46% 1.1M shares	Q2 2025 Held for 5 months	$90.3B

Net Capital Flow

Institutional buying and selling activity for ATAI in Q3 2025

Traded: +$80.6M
Buyers: 79
Sellers: 28
Total Bought: +$94.4M
Total Sold: −$13.7M
Avg Position: $1.6M

Biggest Buyers

Institution	Net Bought	Current Position
Ally Bridge Group LLC Hedge Fund•Sector	+$12.1M +2.3M shares	$12.1M 2.3M shares
ARK Investment Management LLC ETF Provider	+$10.7M +2.0M shares	$10.7M 2.0M shares
T T. Rowe Price Investment Management, Inc. Insurance Manager	+$10.3M +1.9M shares	$10.3M 1.9M shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	+$7.4M +1.4M shares	$13.6M 2.6M shares
MORGAN STANLEY RIA/Wealth	+$7.0M +1.3M shares	$25.5M 4.8M shares
A ADAR1 Capital Management, LLC Hedge Fund•Long/Short	+$4.8M +913.2K shares	$4.8M 913.2K shares
Marshall Wace LLP Institution	+$4.2M +786.0K shares	$5.6M 1.1M shares
JPMORGAN CHASE & CO Institution	+$4.0M +756.2K shares	$4.1M 769.6K shares
CenterBook Partners LP Hedge Fund•Market Neutral	+$3.4M +651.1K shares	$3.4M 651.1K shares
G GROUP ONE TRADING, L.P. Institution	+$3.0M +562.8K shares	$3.2M 600.5K shares

Biggest Sellers

Institution	Net Sold	Current Position
P Pale Fire Capital SE Institution	−$8.3M −1.6M shares	$5.7M 1.1M shares
FRANKLIN RESOURCES INC Institution	−$780.4K −356.4K shares	Sold Off 0 shares
TWO SIGMA INVESTMENTS LLC Hedge Fund•Multi-Strategy	−$773.6K −146.2K shares	$1.9M 363.8K shares
Woodline Partners LP Hedge Fund•Long/Short	−$637.2K −290.9K shares	Sold Off 0 shares
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$478.2K −90.4K shares	$5.8M 1.1M shares
P PEAK6 LLC Institution	−$456.7K −208.5K shares	Sold Off 0 shares
H Hyperion Capital Advisors LP Hedge Fund•Long/Short	−$368.8K −168.4K shares	Sold Off 0 shares
BARCLAYS PLC Institution	−$356.3K −67.3K shares	$516.0K 97.5K shares
R ROYAL BANK OF CANADA Institution	−$307.8K −58.2K shares	$37.1K 7.0K shares
V Virtu Financial LLC Institution	−$209.7K −95.7K shares	Sold Off 0 shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited ATAI in Q3 2025

New Positions: 31
New Value: $37.7M
Exited Positions: 16
Exited Value: $3.0M

New Positions

Institution	Position Value
Ally Bridge Group LLC Hedge Fund•Sector	$12.1M 2.3M shares
T T. Rowe Price Investment Management, Inc. Insurance Manager	$10.3M 1.9M shares
CenterBook Partners LP Hedge Fund•Market Neutral	$3.4M 651.1K shares
F FRED ALGER MANAGEMENT INC Long Only Manager	$2.6M 488.9K shares
ORBIMED ADVISORS LLC Hedge Fund•Sector	$1.8M 347.0K shares
S Sumitomo Mitsui Trust Holdings, Inc. Institution	$1.1M 202.8K shares
Nikko Asset Management Americas, Inc. Long Only Manager	$1.1M 202.8K shares
Rockefeller Capital Management L.P. Long Only Manager	$946.9K 179.0K shares
Numerai GP LLC Hedge Fund•Quant	$813.6K 153.8K shares
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC RIA/Wealth	$608.2K 109.8K shares

Exited Positions

Institution	Previous Position
FRANKLIN RESOURCES INC Institution	$780.4K 356.4K shares
Woodline Partners LP Hedge Fund•Long/Short	$637.2K 290.9K shares
P PEAK6 LLC Institution	$456.7K 208.5K shares
H Hyperion Capital Advisors LP Hedge Fund•Long/Short	$368.8K 168.4K shares
V Virtu Financial LLC Institution	$209.7K 95.7K shares
C CAPITAL ADVISORS INC/OK Institution	$109.5K 50.0K shares
HPM Partners LLC RIA/Wealth	$101.4K 46.3K shares
Q Quadrature Capital Ltd Institution	$70.4K 32.2K shares
TWO SIGMA ADVISERS, LLC Hedge Fund•Multi-Strategy	$67.7K 30.9K shares
T TWO SIGMA SECURITIES, LLC Institution	$46.2K 21.1K shares

Options Activity

Institutions with the largest Call and Put options positions in ATAI as of Q3 2025

Call Positions: 5
Call Value: $10.0M
Put Positions: 5
Put Value: $2.9M

Call Positions

Institution	Position Value
P PEAK6 LLC Institution	$3.3M 6.3K contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$2.9M 5.6K contracts
DLD Asset Management, LP Hedge Fund•Multi-Strategy	$1.9M 3.6K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$959.6K 1.8K contracts
J JANE STREET GROUP, LLC Institution	$822.6K 1.6K contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$1.6M 3.0K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$1.0M 2.0K contracts
DLD Asset Management, LP Hedge Fund•Multi-Strategy	$168.1K 318.0 contracts
J JANE STREET GROUP, LLC Institution	$66.1K 125.0 contracts
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	- - contracts

Most Committed Institutions

Institutions with ATAI as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
Ally Bridge Group LLC Hedge Fund•Sector	Slanix Paul T Alex President	10.13% $12.1M	0.98% 2.3M shares	Q3 2025 Held for 2 months	$119.4M
B Brown University RIA/Wealth	David Alan Miller Founder	2.25% $3.8M	0.31% 718.5K shares	Q2 2021 Held for 4y 5m	$169.1M
P Pale Fire Capital SE Institution	-	0.63% $5.7M	0.46% 1.1M shares	Q2 2024 Held for 1y 5m	$912.4M
A ADAR1 Capital Management, LLC Hedge Fund•Long/Short	Daniel Pawel Schneeberger Managing Partner	0.49% $4.8M	0.39% 913.2K shares	Q3 2025 Held for 2 months	$993.7M
A AdvisorShares Investments LLC Institution	Noah Hamman CEO	0.44% $2.7M	0.22% 506.3K shares	Q3 2021 Held for 4y 2m	$602.4M
D Dauntless Investment Group, LLC Institution	-	0.43% $164.8K	0.01% 31.2K shares	Q3 2025 Held for 2 months	$38.1M
Catalio Capital Management, LP Venture Capital	Olga Eduardovna Maltseva COO	0.19% $1.0M	0.08% 196.9K shares	Q4 2024 Held for 11 months	$540.9M
CenterBook Partners LP Hedge Fund•Market Neutral	David Israel Stemerman CEO	0.17% $3.4M	0.28% 651.1K shares	Q3 2025 Held for 2 months	$2.0B
Numerai GP LLC Hedge Fund•Quant	Richard Malone Craib CEO	0.11% $813.6K	0.07% 153.8K shares	Q3 2025 Held for 2 months	$707.9M
B Bright Futures Wealth Management, LLC. RIA/Wealth	Keith Edward Condemi Managing Partner	0.11% $132.3K	0.01% 25.0K shares	Q3 2025 Held for 2 months	$124.9M

Hedge Fund Spotlight

Discover hedge funds investing in ATAI

DLD Asset Management, LP

Hedge Fund • Multi-Strategy

Portfolio ManagerMark Lawrence Friedman

Portfolio Value: $700.9M
Positions: 146
Last Reported: Q3 2025

Sector Allocation

Position in Atai Life Sciences

Market Value: $317.4K
Shares Held: 60.0K
Portfolio Weight: 0.05%
Owned Since: 2025-Q3

Top Holding	Sector	Market Value	Weight
1 EchoStar SATS	Communication Equipment Technology	$80.3M	11.46%
2 Merck & Co. MRK	Drug Manufacturers - General Healthcare	$47.1M	6.73%
3 Halozyme Therapeutics HALO	Biotechnology Healthcare	$42.3M	6.04%