Citadel Advisors
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Citadel Advisors’s Data I/O DAIO Stock Holding History

Citadel Advisors’s Portfolio DAIO Stock Details DAIO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$133K Sell
52,400
-341,400
-87% -$994K ﹤0.01% 11790
2025
Q4 		$1.25M Buy
+393,800
New +$1.18M ﹤0.01% 6917
2025
Q2 		– Sell
-2,100
Closed -$5.14K – 12959
2025
Q1 		$5.14K Sell
2,100
-100
-5% -$279 ﹤0.01% 13839
2024
Q4 		$6.09K Buy
+2,200
New +$5.77K ﹤0.01% 13819
2024
Q3 		– Sell
-6,500
Closed -$17.9K – 14372
2024
Q2 		$17.9K Buy
6,500
+5,100
+364% +$15.8K ﹤0.01% 12731
2024
Q1 		$4.93K Buy
+1,400
New +$4.59K ﹤0.01% 13779
2023
Q4 		– Sell
-1,300
Closed -$4.95K – 14394
2023
Q3 		$4.95K Buy
1,300
+800
+160% +$3.24K ﹤0.01% 13432
2023
Q2 		$2.15K Sell
500
-1,300
-72% -$5.76K ﹤0.01% 13820
2023
Q1 		$8.95K Sell
1,800
-2,100
-54% -$9.19K ﹤0.01% 13615
2022
Q4 		$15.5K Buy
+3,900
New +$14.1K ﹤0.01% 13325
2022
Q1 		– Sell
-15,800
Closed -$73K – 13736
2021
Q4 		$73K Sell
15,800
-4,700
-23% -$25.2K ﹤0.01% 13004
2021
Q3 		$133K Buy
+20,500
New +$125K ﹤0.01% 12515

Other funds holding DAIO

KWM
Kanen Wealth Management Coconut Creek, Florida $278M AUM 38.85% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
PM
Penbrook Management New York $132M AUM 29.91% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
KA
Kovack Advisors Ft. Lauderdale, Florida $1.87B AUM 29.51% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
EIM
Essex Investment Management Boston, Massachusetts $632M AUM 95.36% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM

Citadel Advisors's DAIO Position: Q1 2026 in Review

Citadel Advisors sold out of Data I/O (DAIO) in Q1 2026, closing a stake of 32,882 shares — an estimated $95.7K sold.

Citadel Advisors first reported a position in DAIO in Q1 2014 and held it in 16 quarters. The position peaked at $139K in Q3 2025. 29 funds tracked by Wall St. Rank hold DAIO as of Q1 2026.

  • Citadel Advisors reported no remaining Data I/O position as of Q1 2026 after selling out during the quarter.
  • Citadel Advisors sold 32,882 Data I/O shares in Q1 2026, an estimated $95.7K.
  • Citadel Advisors first reported a position in Data I/O in Q1 2014 and held it in 16 quarters.
  • Citadel Advisors's Data I/O position peaked at $139K in Q3 2025.
  • 29 funds tracked by Wall St. Rank held Data I/O as of Q1 2026.

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