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CenterBook Partners’s AtaiBeckley Inc ATAI Stock Holding History

CenterBook Partners’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 		$1.35M Sell
256,623
-450,746
-64% -$1.9M 0.07% 306
2026
Q1 		$2.5M Sell
707,369
-73,132
-9% -$275K 0.13% 192
2025
Q4 		$3.19M Buy
780,501
+129,370
+20% +$610K 0.16% 181
2025
Q3 		$3.44M Buy
+651,131
New +$2.64M 0.17% 171

Other funds holding ATAI

BlackRock
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
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
CS
Candriam SCA Strassen, Luxembourg, Luxembourg $22.2B AUM 58.34% 1-Year Est. Return

CenterBook Partners's ATAI Position: Q2 2026 in Review

CenterBook Partners reduced its AtaiBeckley Inc (ATAI) stake by 64% in Q2 2026, selling an estimated $1.9M and leaving 256,623 shares worth $1.35M. The position accounts for 0.07% of the portfolio, ranked #306.

CenterBook Partners first reported a position in ATAI in Q3 2025 and has held it in 4 quarters since. The position peaked at $3.44M in Q3 2025. 242 funds tracked by Wall St. Rank hold ATAI as of Q2 2026.

  • CenterBook Partners held 256,623 shares of AtaiBeckley Inc worth $1.35M as of Q2 2026.
  • CenterBook Partners sold 450,746 AtaiBeckley Inc shares in Q2 2026, an estimated $1.9M.
  • AtaiBeckley Inc made up 0.07% of CenterBook Partners's portfolio in Q2 2026, its #306 holding.
  • CenterBook Partners first reported a position in AtaiBeckley Inc in Q3 2025 and has held it in 4 quarters since.
  • CenterBook Partners's AtaiBeckley Inc position peaked at $3.44M in Q3 2025.
  • 242 funds tracked by Wall St. Rank held AtaiBeckley Inc as of Q2 2026.

Based on CenterBook Partners's 13F filing for Q2 2026, filed 11 Aug 2026.