AtaiBeckley Inc.

ATAIDelisted Sep 11, 2026

Industry: Pharmaceutical Preparations
SEC CIK: 0002081043

SEC filings (opens in a new tab)

AtaiBeckley Inc. was delisted on Sep 11, 2026; its insiders filed their last Form 4 on Sep 11, 2026; 242 institutions reported holding it in 13F filings for Q2 2026, worth $710.6M in total; no superinvestor held it.

Q4 2024 vs. Q3 2024

How the institutions holding AtaiBeckley Inc. changed between Q3 2024 and Q4 2024.

All holders in Q4 2024 All holders in Q3 2024

13F holders of ATAI: Q3 2024 compared with Q4 2024
Measure	Q3 2024	Of which not filed for Q4 2024	Q4 2024	Change
Holders	75	2	88	+15
Shares	11.6M	29.7K	14.5M	+2.91M (+25.1%)
Value	$13.5M	$34.4K	$19.3M	+$5.89M (+43.8%)

2 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (25)

Institutions that held AtaiBeckley Inc. at the end of Q4 2024 but not at the end of Q3 2024.

Institutions new to ATAI in Q4 2024
Institution	Shares	Value	% of portfolio
Davidson Kempner Capital Management LP	949,373	$1.26M	0.02%
Citadel Advisors LLC	416,772	$554.3K	0.00%
Catalio Capital Management, LP	196,858	$261.8K	0.06%
XTX Topco Ltd	140,544	$186.9K	0.02%
Diametric Capital, LP	104,543	$139.0K	0.09%
Jane Street Group, LLC	100,626	$133.8K	0.00%
PEAK6 LLC	100,000	$133.0K	0.01%
ADAR1 Capital Management, LLC	100,000	$133.0K	0.03%
Virtu Financial LLC	98,595	$131.0K	0.01%
Essential Planning, LLC.	84,370	$111.9K	0.00%
Kingswood Wealth Advisors, LLC	50,000	$66.5K	0.00%
Claudia M.P. Batlle, CRP (R) LLC	49,922	$66.4K	0.02%
Cerity Partners LLC	48,145	$64.0K	0.00%
BNP Paribas Arbitrage, SA	43,863	$58.3K	0.00%
Prelude Capital Management, LLC	35,341	$47.0K	0.00%
Raymond James Financial Inc	28,871	$38.4K	0.00%
Two Sigma Advisers, LP	26,700	$35.5K	0.00%
D. E. Shaw & Co., Inc.	15,034	$20.0K	0.00%
R Squared Ltd	9,820	$13.1K	0.01%
SBI Securities Co., Ltd.	898	$1.19K	0.00%
Caitong International Asset Management Co., Ltd	386	$513	0.00%
Optiver Holding B.V.	302	$402	0.00%
MAI Capital Management	300	$399	0.00%
Legend Financial Advisors, Inc.	233	$310	0.00%
Nelson, Van Denburg & Campbell Wealth Management Group, LLC	57	$75	0.00%

Sold out (10)

Institutions that held AtaiBeckley Inc. at the end of Q3 2024 and filed for Q4 2024 without it.

Institutions that sold out of ATAI in Q4 2024
Institution	Shares, Q3 2024	Value, Q3 2024
Walleye Capital LLC	2,264,912	$2.63M
CI Private Wealth, LLC	49,085	$56.9K
Objectivity Squared, LLC	45,209	$50.6K
China Universal Asset Management Co., Ltd.	32,273	$37.4K
XML Financial, LLC	27,457	$31.9K
HRT Financial LP	27,524	$31.0K
Wealthspire Advisors, LLC	20,874	$24.2K
Conservest Capital Advisors, Inc.	10,002	$19.7K
Mirae Asset Global Investments Co., Ltd.	6,069	$7.10K
Daiwa Securities Group Inc.	468	$1.00K

Not filed for Q4 2024 yet (2)

Institutions that held AtaiBeckley Inc. at the end of Q3 2024 and haven't filed a 13F for Q4 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ATAI in Q3 2024 that haven't filed for Q4 2024
Institution	Shares, Q3 2024	Value, Q3 2024
Raymond James Financial Services Advisors, Inc.	29,571	$34.3K
Naples Money Management LLC	100	$116