American Century Companies’s AtaiBeckley Inc ATAI Stock Holding History

American Century Companies’s Portfolio ATAI Stock Details ATAI Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-270,451	Closed	-$1.11M	–	2836
2025 Q4	$1.11M	Buy	270,451 +22,582	+9%	+$107K	﹤0.01%	2284
2025 Q3	$1.31M	Buy	+247,869	New	+$1.01M	﹤0.01%	2213
2025 Q2	–	Sell	-37,981	Closed	-$51.7K	–	2856
2025 Q1	$51.7K	Buy	+37,981	New	+$63.9K	﹤0.01%	2860
2024 Q3	–	Sell	-10,541	Closed	-$14K	–	2887
2024 Q2	$14K	Sell	10,541 -36,087	-77%	-$65K	﹤0.01%	2878
2024 Q1	$91.9K	Buy	+46,628	New	+$85.8K	﹤0.01%	2868
2023 Q4	–	Sell	-47,663	Closed	-$61.5K	–	2879
2023 Q3	$61.5K	Buy	47,663 +12,756	+37%	+$21.9K	﹤0.01%	2782
2023 Q2	$60K	Buy	34,907 +11,014	+46%	+$20.3K	﹤0.01%	2752
2023 Q1	$38.2K	Buy	23,893 +5,266	+28%	+$8.92K	﹤0.01%	2640
2022 Q4	$49.5K	Buy	+18,627	New	+$56.6K	﹤0.01%	2538

Other funds holding ATAI

DTC

Deep Track Capital Greenwich, Connecticut $6.12B AUM 144% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return

Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Candriam SCA Strassen, Luxembourg, Luxembourg $19.3B AUM 39.18% 1-Year Est. Return

Qube Research & Technologies (QRT) London, United Kingdom $89.9B AUM 20.22% 1-Year Est. Return

American Century Companies's ATAI Position: Q1 2026 in Review

American Century Companies sold out of AtaiBeckley Inc (ATAI) in Q1 2026, closing a stake of 270,451 shares — an estimated $1.11M sold.

American Century Companies first reported a position in ATAI in Q4 2022 and held it in 9 quarters. The position peaked at $1.31M in Q3 2025. 183 funds tracked by Wall St. Rank hold ATAI as of Q1 2026.

American Century Companies reported no remaining AtaiBeckley Inc position as of Q1 2026 after selling out during the quarter.
American Century Companies sold 270,451 AtaiBeckley Inc shares in Q1 2026, an estimated $1.11M.
American Century Companies first reported a position in AtaiBeckley Inc in Q4 2022 and held it in 9 quarters.
American Century Companies's AtaiBeckley Inc position peaked at $1.31M in Q3 2025.
183 funds tracked by Wall St. Rank held AtaiBeckley Inc as of Q1 2026.

Based on American Century Companies's 13F filing for Q1 2026, filed 15 May 2026.