Citadel Advisors
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Citadel Advisors’s ECARX Holdings ECX Stock Holding History

Citadel Advisors’s Portfolio ECX Stock Details ECX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$22.4K Sell
22,937
-2,440,670
-99% -$3.87M ﹤0.01% 12644
2025
Q4 		$4.24M Buy
2,463,607
+1,441,676
+141% +$2.92M ﹤0.01% 4546
2025
Q3 		$2.05M Buy
+1,021,931
New +$1.81M ﹤0.01% 6017
2025
Q2 		– Sell
-2,215,466
Closed -$2.79M – 13117
2025
Q1 		$2.79M Buy
2,215,466
+2,183,311
+6,790% +$4.67M ﹤0.01% 4894
2024
Q4 		$67.8K Buy
+32,155
New +$59.3K ﹤0.01% 12017

Other funds holding ECX

Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
Tudor Investment Corp
Tudor Investment Corp Stamford, Connecticut $53.9B AUM 29.12% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Legal & General Group
Legal & General Group London, United Kingdom $432B AUM 29.4% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
Mitsubishi UFJ Asset Management
Mitsubishi UFJ Asset Management Tokyo, Japan $180B AUM 37.51% 1-Year Est. Return
Barclays
Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return

Citadel Advisors's ECX Position: Q1 2026 in Review

Citadel Advisors reduced its ECARX Holdings (ECX) stake by 99% in Q1 2026, selling an estimated $3.87M and leaving 22,937 shares worth $22.4K. The position accounts for ﹤0.01% of the portfolio, ranked #12644.

Citadel Advisors first reported a position in ECX in Q4 2024 and has held it in 5 quarters since. The position peaked at $4.24M in Q4 2025. 39 funds tracked by Wall St. Rank hold ECX as of Q1 2026.

  • Citadel Advisors held 22,937 shares of ECARX Holdings worth $22.4K as of Q1 2026.
  • Citadel Advisors sold 2,440,670 ECARX Holdings shares in Q1 2026, an estimated $3.87M.
  • ECARX Holdings made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #12644 holding.
  • Citadel Advisors first reported a position in ECARX Holdings in Q4 2024 and has held it in 5 quarters since.
  • Citadel Advisors's ECARX Holdings position peaked at $4.24M in Q4 2025.
  • 39 funds tracked by Wall St. Rank held ECARX Holdings as of Q1 2026.

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