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 		$376K Sell
106,100
-98,100
-48% -$369K ﹤0.01% 9949
2025
Q4 		$835K Buy
204,200
+7,300
+4% +$34.4K ﹤0.01% 7818
2025
Q3 		$1.04M Buy
196,900
+117,300
+147% +$476K ﹤0.01% 7453
2025
Q2 		$174K Sell
79,600
-53,400
-40% -$95.7K ﹤0.01% 10811
2025
Q1 		$181K Buy
133,000
+91,400
+220% +$154K ﹤0.01% 10594
2024
Q4 		$55.3K Sell
41,600
-8,700
-17% -$11.6K ﹤0.01% 12289
2024
Q3 		$58.3K Sell
50,300
-54,300
-52% -$72.4K ﹤0.01% 11740
2024
Q2 		$139K Buy
104,600
+71,600
+217% +$129K ﹤0.01% 10454
2024
Q1 		$65K Buy
33,000
+27,900
+547% +$51.3K ﹤0.01% 11909
2023
Q4 		$7.19K Sell
5,100
-4,800
-48% -$5.97K ﹤0.01% 13304
2023
Q3 		$12.8K Sell
9,900
-11,700
-54% -$20K ﹤0.01% 12954
2023
Q2 		$37.2K Buy
21,600
+9,200
+74% +$16.9K ﹤0.01% 12131
2023
Q1 		$22.4K Sell
12,400
-55,500
-82% -$94K ﹤0.01% 12985
2022
Q4 		$181K Buy
67,900
+23,300
+52% +$70.8K ﹤0.01% 10312
2022
Q3 		$148K Buy
44,600
+29,400
+193% +$121K ﹤0.01% 10712
2022
Q2 		$55K Sell
15,200
-114,700
-88% -$469K ﹤0.01% 11864
2022
Q1 		$661K Sell
129,900
-25,500
-16% -$142K ﹤0.01% 8713
2021
Q4 		$1.19M Buy
155,400
+99,800
+179% +$1.21M ﹤0.01% 7529
2021
Q3 		$822K Buy
+55,600
New +$904K ﹤0.01% 8630

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.