Question 1

Does D. E. Shaw own ATAI stock?

Accepted Answer

As of its Q4 2025 13F, D. E. Shaw held 264,517 shares of ATAI (Atai Life Sciences), worth $1.1M.

Question 2

How many shares of ATAI does D. E. Shaw own?

Accepted Answer

As of its Q4 2025 13F, D. E. Shaw held 264,517 shares of ATAI (Atai Life Sciences).

Question 3

What is D. E. Shaw's ATAI position worth?

Accepted Answer

As of its Q4 2025 13F, D. E. Shaw's ATAI position was worth $1.1M.

Question 4

When did D. E. Shaw first buy ATAI?

Accepted Answer

D. E. Shaw first reported ATAI in its Q4 2021 13F and listed it in 11 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q1 Latest	Exited	0	-100.0%	$0	0.0%	$3.69	0
2025-Q4	Decreased	264,517	-62.9%	$1.1M	0.0%	—	0
2025-Q3	Increased	712,445	+2.5%	$3.8M	0.0%	—	27
2025-Q2	Decreased	695,031	-30.0%	$1.5M	0.0%	$2.20	0
2025-Q1	Increased	993,361	+6507.4%	$1.4M	0.0%	—	41
2024-Q4	New	15,034	—	$19,995	0.0%	—	29