Citadel Advisors
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Citadel Advisors’s Atomera ATOM Stock Holding History

Citadel Advisors’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
Q2 		$1.93M Sell
221,842
-828,137
-79% -$6.5M ﹤0.01% 6632
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
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AC
Avenir Corporation Alexandria, Virginia $821M AUM 4.23% 1-Year Est. Return
Baird Financial Group
Baird Financial Group Milwaukee, Wisconsin $72.7B AUM 26.4% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
QPW
Quantum Private Wealth Tampa, Florida $390M AUM 58.18% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Citadel Advisors's ATOM Position: Q2 2026 in Review

Citadel Advisors reduced its Atomera (ATOM) stake by 79% in Q2 2026, selling an estimated $6.5M and leaving 221,842 shares worth $1.93M. The position accounts for ﹤0.01% of the portfolio, ranked #6632.

Citadel Advisors first reported a position in ATOM in Q1 2021 and has held it in 19 quarters since. The position peaked at $4M in Q1 2026. 122 funds tracked by Wall St. Rank hold ATOM as of Q2 2026.

  • Citadel Advisors held 221,842 shares of Atomera worth $1.93M as of Q2 2026.
  • Citadel Advisors sold 828,137 Atomera shares in Q2 2026, an estimated $6.5M.
  • Atomera made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #6632 holding.
  • Citadel Advisors first reported a position in Atomera in Q1 2021 and has held it in 19 quarters since.
  • Citadel Advisors's Atomera position peaked at $4M in Q1 2026.
  • 122 funds tracked by Wall St. Rank held Atomera as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.