Marshall Wace’s AtaiBeckley Inc ATAI Stock Holding History

Marshall Wace’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 Q2	$580K	Sell	110,019 -2,254,427	-95%	-$9.49M	﹤0.01%	2448
2026 Q1	$8.37M	Sell	2,364,446 -310,671	-12%	-$1.17M	0.01%	1060
2025 Q4	$10.9M	Buy	2,675,117 +1,609,236	+151%	+$7.59M	0.01%	838
2025 Q3	$5.64M	Buy	1,065,881 +786,007	+281%	+$3.19M	0.01%	1143
2025 Q2	$613K	Buy	+279,874	New	+$502K	﹤0.01%	2068
2024 Q2	–	Sell	-793,839	Closed	-$1.56M	–	2528
2024 Q1	$1.56M	Buy	793,839 +17,950	+2%	+$33K	﹤0.01%	1467
2023 Q4	$1.09M	Buy	+775,889	New	+$965K	﹤0.01%	1443
2022 Q4	–	Sell	-43,933	Closed	-$147K	–	2917
2022 Q3	$147K	Buy	+43,933	New	+$180K	﹤0.01%	3138
2022 Q1	–	Sell	-406,618	Closed	-$3.1M	–	3328
2021 Q4	$3.1M	Buy	+406,618	New	+$4.93M	0.01%	1742

Other funds holding ATAI

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

DTC

Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Candriam SCA Strassen, Luxembourg, Luxembourg $22.2B AUM 58.34% 1-Year Est. Return

Marshall Wace's ATAI Position: Q2 2026 in Review

Marshall Wace reduced its AtaiBeckley Inc (ATAI) stake by 95% in Q2 2026, selling an estimated $9.49M and leaving 110,019 shares worth $580K. The position accounts for ﹤0.01% of the portfolio, ranked #2448.

Marshall Wace first reported a position in ATAI in Q4 2021 and has held it in 9 quarters since. The position peaked at $10.9M in Q4 2025. 242 funds tracked by Wall St. Rank hold ATAI as of Q2 2026.

Marshall Wace held 110,019 shares of AtaiBeckley Inc worth $580K as of Q2 2026.
Marshall Wace sold 2,254,427 AtaiBeckley Inc shares in Q2 2026, an estimated $9.49M.
AtaiBeckley Inc made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #2448 holding.
Marshall Wace first reported a position in AtaiBeckley Inc in Q4 2021 and has held it in 9 quarters since.
Marshall Wace's AtaiBeckley Inc position peaked at $10.9M in Q4 2025.
242 funds tracked by Wall St. Rank held AtaiBeckley Inc as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.