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 		$607K Sell
171,388
-1,370,118
-89% -$5.16M ﹤0.01% 8822
2025
Q4 		$6.3M Sell
1,541,506
-1,034,488
-40% -$4.88M ﹤0.01% 3928
2025
Q3 		$13.6M Buy
2,575,994
+1,396,451
+118% +$5.67M ﹤0.01% 2812
2025
Q2 		$2.58M Buy
1,179,543
+1,154,511
+4,612% +$2.07M ﹤0.01% 5238
2025
Q1 		$34K Sell
25,032
-391,740
-94% -$659K ﹤0.01% 12694
2024
Q4 		$554K Buy
+416,772
New +$554K ﹤0.01% 8334
2024
Q3 		– Sell
-3,085
Closed -$4.11K – 14209
2024
Q2 		$4.1K Sell
3,085
-304,741
-99% -$549K ﹤0.01% 13517
2024
Q1 		$606K Sell
307,826
-118,281
-28% -$218K ﹤0.01% 7958
2023
Q4 		$601K Buy
+426,107
New +$530K ﹤0.01% 7694
2023
Q3 		– Sell
-50,089
Closed -$85.8K – 14252
2023
Q2 		$86.2K Buy
50,089
+49,776
+15,903% +$91.6K ﹤0.01% 11146
2023
Q1 		$567 Sell
313
-12,590
-98% -$21.3K ﹤0.01% 14465
2022
Q4 		$34.3K Sell
12,903
-1,017,013
-99% -$3.09M ﹤0.01% 12589
2022
Q3 		$3.41M Buy
1,029,916
+754,242
+274% +$3.1M ﹤0.01% 4547
2022
Q2 		$1M Buy
275,674
+211,127
+327% +$863K ﹤0.01% 7000
2022
Q1 		$329K Sell
64,547
-584,028
-90% -$3.25M ﹤0.01% 10375
2021
Q4 		$4.95M Sell
648,575
-74,334
-10% -$902K ﹤0.01% 4311
2021
Q3 		$10.7M Buy
722,909
+71,421
+11% +$1.16M ﹤0.01% 2964
2021
Q2 		$12.1M Buy
+651,488
New +$12M ﹤0.01% 2799

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.