Ken Griffin
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Ken Griffin’s REX American Resources REX Stock Holding History

Ken Griffin’s Portfolio REX Stock Details REX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$269K Sell
5,900
-6,800
-54% -$246K ﹤0.01% 10721
2025
Q4 		$410K Sell
12,700
-200
-2% -$6.51K ﹤0.01% 9487
2025
Q3 		$395K Buy
+12,900
New +$367K ﹤0.01% 9697
2025
Q2 		– Sell
-77,400
Closed -$1.45M – 14657
2025
Q1 		$1.45M Buy
77,400
+36,800
+91% +$739K ﹤0.01% 6151
2024
Q4 		$846K Buy
40,600
+25,600
+171% +$566K ﹤0.01% 7403
2024
Q3 		$347K Buy
15,000
+7,200
+92% +$164K ﹤0.01% 9025
2024
Q2 		$178K Hold
7,800
– – ﹤0.01% 10091
2024
Q1 		$229K Buy
7,800
+4,800
+160% +$106K ﹤0.01% 10051
2023
Q4 		$71K Buy
3,000
+2,400
+400% +$48K ﹤0.01% 11373
2023
Q3 		$12.2K Sell
600
-2,400
-80% -$45.1K ﹤0.01% 12974
2023
Q2 		$52.2K Sell
3,000
-15,600
-84% -$242K ﹤0.01% 11746
2023
Q1 		$266K Buy
18,600
+18,200
+4,550% +$288K ﹤0.01% 9621
2022
Q4 		$6.37K Buy
+400
New +$6.03K ﹤0.01% 13925

Other funds holding REX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 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
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
SFM
Systematic Financial Management Teaneck, New Jersey $4.36B AUM 40.56% 1-Year Est. Return
MP
Mangrove Partners Greenwich, Connecticut $1.24B AUM 41.74% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

Ken Griffin's REX Position: Q1 2026 in Review

Ken Griffin increased its REX American Resources (REX) stake by 60% in Q1 2026, buying an estimated $1.65M and bringing the position to 121,861 shares worth $5.55M. The position accounts for ﹤0.01% of the portfolio, ranked #4172.

Ken Griffin first reported a position in REX in Q4 2013 and has held it in 30 quarters since. 234 funds tracked by Wall St. Rank hold REX as of Q1 2026.

  • Ken Griffin held 121,861 shares of REX American Resources worth $5.55M as of Q1 2026.
  • Ken Griffin bought 45,629 REX American Resources shares in Q1 2026, an estimated $1.65M.
  • REX American Resources made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #4172 holding.
  • Ken Griffin first reported a position in REX American Resources in Q4 2013 and has held it in 30 quarters since.
  • 234 funds tracked by Wall St. Rank held REX American Resources as of Q1 2026.

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