Ken Griffin
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Ken Griffin’s Iris Energy IREN Stock Holding History

Ken Griffin’s Portfolio IREN Stock Details IREN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$309M Sell
9,023,600
-2,336,800
-21% -$106M 0.05% 302
2025
Q4 		$429M Buy
11,360,400
+2,336,100
+26% +$121M 0.06% 228
2025
Q3 		$424M Buy
9,024,300
+2,088,800
+30% +$50.7M 0.06% 234
2025
Q2 		$101M Buy
6,935,500
+3,854,100
+125% +$31.3M 0.02% 764
2025
Q1 		$18.8M Sell
3,081,400
-3,062,900
-50% -$29.8M ﹤0.01% 2113
2024
Q4 		$60.3M Buy
6,144,300
+3,963,500
+182% +$42.2M 0.01% 1118
2024
Q3 		$18.4M Sell
2,180,800
-356,100
-14% -$3.27M ﹤0.01% 2134
2024
Q2 		$28.6M Buy
2,536,900
+2,018,800
+390% +$15.1M 0.01% 1648
2024
Q1 		$2.8M Buy
518,100
+415,700
+406% +$2.26M ﹤0.01% 4902
2023
Q4 		$732K Buy
102,400
+82,600
+417% +$355K ﹤0.01% 7292
2023
Q3 		$73.5K Buy
+19,800
New +$105K ﹤0.01% 11271

Other funds holding IREN

DE
Defiance ETFs New York $6.98B AUM
SA
Situational Awareness San Francisco, California $13.7B AUM 334.5% 1-Year Est. Return
Citigroup
Citigroup New York $303B AUM 53.02% 1-Year Est. Return
BC
BIT Capital Berlin, Germany $2.07B AUM 157.17% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
VARA
Value Aligned Research Advisors Princeton, New Jersey $20.7B AUM 292.88% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
MG
Marex Group London $15.8B AUM 31.44% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Ken Griffin's IREN Position: Q1 2026 in Review

Ken Griffin increased its Iris Energy (IREN) stake by 110% in Q1 2026, buying an estimated $41.8M and bringing the position to 1,765,514 shares worth $60.5M. The position accounts for 0.01% of the portfolio, ranked #1186.

Ken Griffin first reported a position in IREN in Q4 2021 and has held it in 13 quarters since. The position peaked at $163M in Q3 2025. 503 funds tracked by Wall St. Rank hold IREN as of Q1 2026.

  • Ken Griffin held 1,765,514 shares of Iris Energy worth $60.5M as of Q1 2026.
  • Ken Griffin bought 925,482 Iris Energy shares in Q1 2026, an estimated $41.8M.
  • Iris Energy made up 0.01% of Ken Griffin's portfolio in Q1 2026, its #1186 holding.
  • Ken Griffin first reported a position in Iris Energy in Q4 2021 and has held it in 13 quarters since.
  • Ken Griffin's Iris Energy position peaked at $163M in Q3 2025.
  • 503 funds tracked by Wall St. Rank held Iris Energy as of Q1 2026.

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