Citadel Advisors
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Citadel Advisors’s System1 SST Stock Holding History

Citadel Advisors’s Portfolio SST Stock Details SST Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-12,759
Closed -$50K – 14177
2025
Q4 		$50K Buy
12,759
+2,703
+27% +$14K ﹤0.01% 12034
2025
Q3 		$70.8K Buy
+10,056
New +$69.5K ﹤0.01% 12032
2025
Q1 		– Sell
-1,731
Closed -$10.6K – 15515
2024
Q4 		$15.5K Buy
1,731
+823
+91% +$8.28K ﹤0.01% 13342
2024
Q3 		$10.2K Buy
+908
New +$11.7K ﹤0.01% 13221
2024
Q1 		– Sell
-324
Closed -$7.18K – 15402
2023
Q4 		$7.18K Buy
324
+229
+241% +$3.39K ﹤0.01% 13305
2023
Q3 		$1.15K Buy
+95
New +$2.28K ﹤0.01% 13912
2023
Q1 		– Sell
-10
Closed -$444 – 15480
2022
Q4 		$474 Buy
+10
New +$514 ﹤0.01% 14647
2022
Q2 		– Sell
-1,268
Closed -$160K – 14055
2022
Q1 		$184K Sell
1,268
-418,402
-100% -$51.4M ﹤0.01% 11637
2021
Q4 		$41.8M Buy
419,670
+49,249
+13% +$4.9M 0.01% 1308
2021
Q3 		$36.7M Buy
370,421
+174,482
+89% +$17.3M 0.01% 1366
2021
Q2 		$19.4M Buy
195,939
+173,726
+782% +$17.3M ﹤0.01% 2122
2021
Q1 		$2.21M Buy
+22,213
New +$2.37M ﹤0.01% 6149

Other funds holding SST

CH
Cannae Holdings Las Vegas, Nevada $134M AUM 85.46% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
Cerity Partners
Cerity Partners New York $70.8B AUM 21.68% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
NMC
Nine Masts Capital Central, Hong Kong $995M AUM 22.79% 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

Citadel Advisors's SST Position: Q1 2026 in Review

Citadel Advisors sold out of System1 (SST) in Q1 2026, closing a stake of 12,759 shares — an estimated $50K sold.

Citadel Advisors first reported a position in SST in Q1 2021 and held it in 12 quarters. The position peaked at $41.8M in Q4 2021. 25 funds tracked by Wall St. Rank hold SST as of Q1 2026.

  • Citadel Advisors reported no remaining System1 position as of Q1 2026 after selling out during the quarter.
  • Citadel Advisors sold 12,759 System1 shares in Q1 2026, an estimated $50K.
  • Citadel Advisors first reported a position in System1 in Q1 2021 and held it in 12 quarters.
  • Citadel Advisors's System1 position peaked at $41.8M in Q4 2021.
  • 25 funds tracked by Wall St. Rank held System1 as of Q1 2026.

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