Ken Griffin
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Ken Griffin’s Atomera ATOM Stock Holding History

Ken Griffin’s Portfolio ATOM Stock Details ATOM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$4M Buy
1,049,979
+970,686
+1,224% +$3.66M ﹤0.01% 4710
2025
Q4 		$175K Sell
79,293
-104,305
-57% -$315K ﹤0.01% 11153
2025
Q3 		$812K Buy
183,598
+93,373
+103% +$383K ﹤0.01% 7993
2025
Q2 		$455K Sell
90,225
-13,465
-13% -$71.8K ﹤0.01% 8860
2025
Q1 		$415K Buy
103,690
+58,277
+128% +$454K ﹤0.01% 8891
2024
Q4 		$527K Sell
45,413
-27,815
-38% -$160K ﹤0.01% 8436
2024
Q3 		$193K Buy
73,228
+1,148
+2% +$3.58K ﹤0.01% 10208
2024
Q2 		$275K Sell
72,080
-57,688
-44% -$272K ﹤0.01% 9306
2024
Q1 		$799K Buy
+129,768
New +$890K ﹤0.01% 7396
2023
Q4 		– Sell
-320
Closed -$2.12K – 14235
2023
Q3 		$2K Sell
320
-16,509
-98% -$118K ﹤0.01% 13774
2023
Q2 		$148K Sell
16,829
-71,853
-81% -$567K ﹤0.01% 10365
2023
Q1 		$565K Buy
88,682
+24,119
+37% +$163K ﹤0.01% 8073
2022
Q4 		$402K Buy
64,563
+20,062
+45% +$164K ﹤0.01% 8707
2022
Q3 		$451K Buy
+44,501
New +$526K ﹤0.01% 8688
2022
Q1 		– Sell
-31,891
Closed -$477K – 13541
2021
Q4 		$642K Sell
31,891
-11,941
-27% -$281K ﹤0.01% 9047
2021
Q3 		$1.01M Buy
43,832
+10,221
+30% +$222K ﹤0.01% 8119
2021
Q2 		$721K Sell
33,611
-26,418
-44% -$543K ﹤0.01% 9188
2021
Q1 		$1.47M Buy
+60,029
New +$1.76M ﹤0.01% 7156

Other funds holding ATOM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
AC
Avenir Corporation Alexandria, Virginia $820M AUM 2.4% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Baird Financial Group
Baird Financial Group Milwaukee, Wisconsin $64B AUM 22.64% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
QPW
Quantum Private Wealth Tampa, Florida $390M AUM 58.18% 1-Year Est. Return
HCM
Hollencrest Capital Management Newport Beach, California $2.7B AUM 23.62% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Ken Griffin's ATOM Position: Q1 2026 in Review

Ken Griffin increased its Atomera (ATOM) stake by 1,224% in Q1 2026, buying an estimated $3.66M and bringing the position to 1,049,979 shares worth $4M. The position accounts for ﹤0.01% of the portfolio, ranked #4710.

Ken Griffin first reported a position in ATOM in Q1 2021 and has held it in 18 quarters since. 108 funds tracked by Wall St. Rank hold ATOM as of Q1 2026.

  • Ken Griffin held 1,049,979 shares of Atomera worth $4M as of Q1 2026.
  • Ken Griffin bought 970,686 Atomera shares in Q1 2026, an estimated $3.66M.
  • Atomera made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #4710 holding.
  • Ken Griffin first reported a position in Atomera in Q1 2021 and has held it in 18 quarters since.
  • 108 funds tracked by Wall St. Rank held Atomera as of Q1 2026.

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