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 2023 vs. Q3 2023

How the institutions holding AtaiBeckley Inc. changed between Q3 2023 and Q4 2023.

All holders in Q4 2023 All holders in Q3 2023

13F holders of ATAI: Q3 2023 compared with Q4 2023
Measure	Q3 2023	Of which not filed for Q4 2023	Q4 2023	Change
Holders	96	1	88	−7
Shares	14.6M	240	13.4M	−1.27M (−8.7%)
Value	$19.1M	$310	$18.9M	−$197.0K (−1.0%)

1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so the changes leave them out.

New holders (19)

Institutions that held AtaiBeckley Inc. at the end of Q4 2023 but not at the end of Q3 2023.

Institutions new to ATAI in Q4 2023
Institution	Shares	Value	% of portfolio
Marshall Wace, LLP	775,889	$1.09M	0.00%
Citadel Advisors LLC	426,107	$600.8K	0.00%
HRT Financial LP	130,849	$184.0K	0.00%
D. E. Shaw & Co., Inc.	108,168	$152.5K	0.00%
Diametric Capital, LP	53,129	$74.9K	0.05%
Objectivity Squared, LLC	42,261	$59.6K	0.06%
Two Sigma Securities, LLC	34,053	$48.0K	0.00%
Virtu Financial LLC	29,140	$41.0K	0.00%
Prelude Capital Management, LLC	17,952	$25.3K	0.00%
Simplex Trading, LLC	16,545	$23.0K	0.00%
Squarepoint Ops LLC	12,047	$17.0K	0.00%
Detalus Advisors, LLC	10,000	$14.1K	0.01%
CIBC World Markets Inc.	10,007	$14.0K	0.00%
Advisory Services Network, LLC	1,500	$2.12K	0.00%
Baystate Wealth Management LLC	300	$423	0.00%
1832 Asset Management L.P.	100	$141	0.00%
Naples Money Management LLC	100	$141	0.00%
Rothschild Investment LLC	50	$71	0.00%
Resources Management Corp	139	$0	0.00%

Sold out (26)

Institutions that held AtaiBeckley Inc. at the end of Q3 2023 and filed for Q4 2023 without it.

Institutions that sold out of ATAI in Q4 2023
Institution	Shares, Q3 2023	Value, Q3 2023
Bank of Montreal	971,455	$1.41M
Swiss National Bank	268,600	$346.5K
Rafferty Asset Management, LLC	171,740	$221.5K
Simplify Asset Management Inc.	140,000	$180.6K
California State Teachers Retirement System	110,065	$142.0K
Northern Trust Corp	100,401	$129.5K
UBS Asset Management Americas Inc	72,480	$93.5K
Quattro Financial Advisors LLC	70,976	$91.6K
Janus Henderson Group PLC	61,391	$78.9K
Virtus ETF Advisers LLC	55,554	$71.7K
American Century Companies Inc	47,663	$61.5K
Verition Fund Management LLC	44,482	$57.4K
Teacher Retirement System of Texas	35,376	$46.0K
Arizona State Retirement System	35,451	$45.7K
Tudor Investment Corp Et Al	35,000	$45.1K
Wedmont Private Capital	27,419	$37.3K
Zurcher Kantonalbank (Zurich Cantonalbank)	28,085	$36.0K
SG Americas Securities, LLC	15,613	$20.0K
North Star Investment Management Corp.	15,430	$19.9K
State of Wisconsin Investment Board	15,179	$19.6K
Pictet Asset Management Holding SA	14,052	$18.1K
HSBC Holdings PLC	11,003	$14.4K
Mariner, LLC	10,244	$13.2K
Itau Unibanco Holding S.A.	6,760	$8.72K
Signaturefd, LLC	1,450	$1.87K
FinTrust Capital Advisors, LLC	100	$129

Not filed for Q4 2023 yet (1)

Institutions that held AtaiBeckley Inc. at the end of Q3 2023 and haven't filed a 13F for Q4 2023. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ATAI in Q3 2023 that haven't filed for Q4 2023
Institution	Shares, Q3 2023	Value, Q3 2023
Column Capital Advisors, LLC	240	$310