Citadel Advisors
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Citadel Advisors’s AtaiBeckley Inc ATAI Stock Holding History

Citadel Advisors’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 		$925K Buy
261,200
+45,300
+21% +$171K ﹤0.01% 7837
2025
Q4 		$883K Buy
215,900
+34,500
+19% +$163K ﹤0.01% 7667
2025
Q3 		$960K Buy
181,400
+142,300
+364% +$578K ﹤0.01% 7619
2025
Q2 		$85.6K Sell
39,100
-64,300
-62% -$115K ﹤0.01% 11445
2025
Q1 		$141K Sell
103,400
-153,600
-60% -$258K ﹤0.01% 10973
2024
Q4 		$342K Buy
257,000
+198,700
+341% +$264K ﹤0.01% 9388
2024
Q3 		$67.6K Buy
58,300
+49,100
+534% +$65.4K ﹤0.01% 11601
2024
Q2 		$12.2K Sell
9,200
-68,200
-88% -$123K ﹤0.01% 12994
2024
Q1 		$152K Buy
77,400
+48,700
+170% +$89.6K ﹤0.01% 10743
2023
Q4 		$40.5K Sell
28,700
-5,400
-16% -$6.71K ﹤0.01% 12000
2023
Q3 		$44K Buy
34,100
+28,300
+488% +$48.5K ﹤0.01% 11895
2023
Q2 		$9.98K Sell
5,800
-5,400
-48% -$9.94K ﹤0.01% 13226
2023
Q1 		$20.3K Sell
11,200
-56,700
-84% -$96K ﹤0.01% 13061
2022
Q4 		$181K Buy
67,900
+31,000
+84% +$94.1K ﹤0.01% 10311
2022
Q3 		$122K Sell
36,900
-700
-2% -$2.88K ﹤0.01% 10918
2022
Q2 		$137K Sell
37,600
-13,100
-26% -$53.5K ﹤0.01% 11073
2022
Q1 		$258K Sell
50,700
-7,100
-12% -$39.5K ﹤0.01% 10928
2021
Q4 		$441K Buy
57,800
+35,500
+159% +$431K ﹤0.01% 9987
2021
Q3 		$330K Buy
+22,300
New +$363K ﹤0.01% 10855

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

Citadel Advisors's ATAI Position: Q1 2026 in Review

Citadel Advisors reduced its AtaiBeckley Inc (ATAI) stake by 89% in Q1 2026, selling an estimated $5.16M and leaving 171,388 shares worth $607K. The position accounts for ﹤0.01% of the portfolio, ranked #8822.

Citadel Advisors first reported a position in ATAI in Q2 2021 and has held it in 18 quarters since. The position peaked at $13.6M in Q3 2025. 183 funds tracked by Wall St. Rank hold ATAI as of Q1 2026.

  • Citadel Advisors held 171,388 shares of AtaiBeckley Inc worth $607K as of Q1 2026.
  • Citadel Advisors sold 1,370,118 AtaiBeckley Inc shares in Q1 2026, an estimated $5.16M.
  • AtaiBeckley Inc made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #8822 holding.
  • Citadel Advisors first reported a position in AtaiBeckley Inc in Q2 2021 and has held it in 18 quarters since.
  • Citadel Advisors's AtaiBeckley Inc position peaked at $13.6M in Q3 2025.
  • 183 funds tracked by Wall St. Rank held AtaiBeckley Inc as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.