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
2025
Q1 		– Sell
-50
Closed -$449 – 15516
2024
Q4 		$449 Buy
50
+40
+400% +$403 ﹤0.01% 14323
2024
Q3 		$112 Buy
+10
New +$128 ﹤0.01% 14087
2024
Q1 		– Sell
-4,190
Closed -$93K – 15403
2023
Q4 		$93K Buy
4,190
+3,980
+1,895% +$58.9K ﹤0.01% 11022
2023
Q3 		$2.54K Sell
210
-10
-5% -$240 ﹤0.01% 13703
2023
Q2 		$9.9K Sell
220
-40
-15% -$1.51K ﹤0.01% 13231
2023
Q1 		$11.2K Sell
260
-8,360
-97% -$371K ﹤0.01% 13485
2022
Q4 		$404K Sell
8,620
-7,470
-46% -$384K ﹤0.01% 8689
2022
Q3 		$1.01M Buy
16,090
+8,920
+124% +$778K ﹤0.01% 6968
2022
Q2 		$500K Sell
7,170
-5,050
-41% -$637K ﹤0.01% 8650
2022
Q1 		$1.77M Buy
+12,220
New +$1.5M ﹤0.01% 6361
2021
Q4 		– Sell
-2,080
Closed -$206K – 14715
2021
Q3 		$206K Buy
2,080
+880
+73% +$87.1K ﹤0.01% 11931
2021
Q2 		$119K Buy
+1,200
New +$119K ﹤0.01% 12752

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 $5.72T AUM 30.48% 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 $693M AUM 31.93% 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 $2.9T AUM 29.55% 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.