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 Q3	–	Sell	-110,019	Closed	-$580K	–	3138
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

IFP Advisors Tampa, Florida $5.86B AUM 20.09% 1-Year Est. Return

Allworth Financial Folsom, California $28.2B AUM 13.34% 1-Year Est. Return

SBI Securities Tokyo, Japan $4.38B AUM 56.37% 1-Year Est. Return

Marshall Wace's ATAI Position: Q3 2026 in Review

Marshall Wace sold out of AtaiBeckley Inc (ATAI) in Q3 2026, closing a stake of 110,019 shares — an estimated $580K sold.

Marshall Wace first reported a position in ATAI in Q4 2021 and held it in 9 quarters. The position peaked at $10.9M in Q4 2025. 3 funds tracked by Wall St. Rank hold ATAI as of Q3 2026.

Marshall Wace reported no remaining AtaiBeckley Inc position as of Q3 2026 after selling out during the quarter.
Marshall Wace sold 110,019 AtaiBeckley Inc shares in Q3 2026, an estimated $580K.
Marshall Wace first reported a position in AtaiBeckley Inc in Q4 2021 and held it in 9 quarters.
Marshall Wace's AtaiBeckley Inc position peaked at $10.9M in Q4 2025.
3 funds tracked by Wall St. Rank held AtaiBeckley Inc as of Q3 2026.

Based on Marshall Wace's 13F filing for Q3 2026, filed 13 Nov 2026.