Hudson Bay Capital Management
ATAI

Hudson Bay Capital Management’s AtaiBeckley Inc ATAI Stock Holding History

Hudson Bay Capital Management’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 		– Sell
-188,485
Closed -$667K – 1371
2026
Q1 		$667K Buy
+188,485
New +$710K ﹤0.01% 943
2025
Q4 		– Sell
-19,700
Closed -$104K – 1195
2025
Q3 		$104K Buy
+19,700
New +$80K ﹤0.01% 1065

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Vanguard Capital Management
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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

Hudson Bay Capital Management's ATAI Position: Q2 2026 in Review

Hudson Bay Capital Management sold out of AtaiBeckley Inc (ATAI) in Q2 2026, closing a stake of 188,485 shares — an estimated $667K sold.

Hudson Bay Capital Management first reported a position in ATAI in Q3 2025 and held it in 2 quarters. The position peaked at $667K in Q1 2026. 242 funds tracked by Wall St. Rank hold ATAI as of Q2 2026.

  • Hudson Bay Capital Management reported no remaining AtaiBeckley Inc position as of Q2 2026 after selling out during the quarter.
  • Hudson Bay Capital Management sold 188,485 AtaiBeckley Inc shares in Q2 2026, an estimated $667K.
  • Hudson Bay Capital Management first reported a position in AtaiBeckley Inc in Q3 2025 and held it in 2 quarters.
  • Hudson Bay Capital Management's AtaiBeckley Inc position peaked at $667K in Q1 2026.
  • 242 funds tracked by Wall St. Rank held AtaiBeckley Inc as of Q2 2026.

Based on Hudson Bay Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.