PEAK6
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PEAK6’s AtaiBeckley Inc ATAI Stock Holding History

PEAK6’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
Q1 		– Sell
-586,000
Closed -$2.4M – 2694
2025
Q4 		$2.4M Sell
586,000
-42,600
-7% -$201K ﹤0.01% 1334
2025
Q3 		$3.33M Buy
+628,600
New +$2.55M ﹤0.01% 1229
2025
Q2 		– Sell
-3,500
Closed -$4.76K – 2968
2025
Q1 		$4.76K Buy
+3,500
New +$5.89K ﹤0.01% 2814

Other funds holding ATAI

DTC
Deep Track Capital Greenwich, Connecticut $6.12B AUM 144% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
CS
Candriam SCA Strassen, Luxembourg, Luxembourg $19.3B AUM 39.18% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $89.9B AUM 20.22% 1-Year Est. Return

PEAK6's ATAI Position: Q3 2025 in Review

PEAK6 sold out of AtaiBeckley Inc (ATAI) in Q3 2025, closing a stake of 208,548 shares — an estimated $847K sold.

PEAK6 first reported a position in ATAI in Q4 2024 and held it in 3 quarters. The position peaked at $457K in Q2 2025. 129 funds tracked by Wall St. Rank hold ATAI as of Q3 2025.

  • PEAK6 reported no remaining AtaiBeckley Inc position as of Q3 2025 after selling out during the quarter.
  • PEAK6 sold 208,548 AtaiBeckley Inc shares in Q3 2025, an estimated $847K.
  • PEAK6 first reported a position in AtaiBeckley Inc in Q4 2024 and held it in 3 quarters.
  • PEAK6's AtaiBeckley Inc position peaked at $457K in Q2 2025.
  • 129 funds tracked by Wall St. Rank held AtaiBeckley Inc as of Q3 2025.

Based on PEAK6's 13F filing for Q3 2025, filed 14 Nov 2025.