Ruane, Cunniff & Goldfarb’s AtaiBeckley Inc ATAI Stock Holding History

Ruane, Cunniff & Goldfarb’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	$222K	Hold	42,112	–	–	﹤0.01%	48
2026 Q1	$149K	Buy	+42,112	New	+$159K	﹤0.01%	49
2025 Q4	–	Sell	-42,112	Closed	-$223K	–	49
2025 Q3	$223K	Hold	42,112	–	–	﹤0.01%	43
2025 Q2	$92.2K	Hold	42,112	–	–	﹤0.01%	43
2025 Q1	$57.3K	Hold	42,112	–	–	﹤0.01%	38
2024 Q4	$56K	Hold	42,112	–	–	﹤0.01%	39
2024 Q3	$48.9K	Hold	42,112	–	–	﹤0.01%	37
2024 Q2	$56K	Hold	42,112	–	–	﹤0.01%	37
2024 Q1	$83K	Hold	42,112	–	–	﹤0.01%	33
2023 Q4	$59.4K	Hold	42,112	–	–	﹤0.01%	33
2023 Q3	$54.3K	Hold	42,112	–	–	﹤0.01%	36
2023 Q2	$72.4K	Hold	42,112	–	–	﹤0.01%	34
2023 Q1	$76.2K	Buy	+42,112	New	+$71.3K	﹤0.01%	31

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

Ruane, Cunniff & Goldfarb's ATAI Position: Q2 2026 in Review

Ruane, Cunniff & Goldfarb held its AtaiBeckley Inc (ATAI) position steady in Q2 2026 at 42,112 shares worth $222K. The position accounts for ﹤0.01% of the portfolio, ranked #48.

Ruane, Cunniff & Goldfarb first reported a position in ATAI in Q1 2023 and has held it in 13 quarters since. The position peaked at $223K in Q3 2025. 243 funds tracked by Wall St. Rank hold ATAI as of Q2 2026.

Ruane, Cunniff & Goldfarb held 42,112 shares of AtaiBeckley Inc worth $222K as of Q2 2026.
Ruane, Cunniff & Goldfarb left its AtaiBeckley Inc share count unchanged in Q2 2026.
AtaiBeckley Inc made up ﹤0.01% of Ruane, Cunniff & Goldfarb's portfolio in Q2 2026, its #48 holding.
Ruane, Cunniff & Goldfarb first reported a position in AtaiBeckley Inc in Q1 2023 and has held it in 13 quarters since.
Ruane, Cunniff & Goldfarb's AtaiBeckley Inc position peaked at $223K in Q3 2025.
243 funds tracked by Wall St. Rank held AtaiBeckley Inc as of Q2 2026.

Based on Ruane, Cunniff & Goldfarb's 13F filing for Q2 2026, filed 14 Aug 2026.