Citadel Advisors
DAIO icon

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
Q2 		$342K Buy
+86,869
New +$273K ﹤0.01% 10825
2026
Q1 		– Sell
-32,882
Closed -$95.7K – 13176
2025
Q4 		$104K Sell
32,882
-8,690
-21% -$26.1K ﹤0.01% 11607
2025
Q3 		$139K Sell
41,572
-797
-2% -$2.58K ﹤0.01% 11593
2025
Q2 		$130K Buy
42,369
+1,148
+3% +$2.89K ﹤0.01% 11093
2025
Q1 		$101K Buy
41,221
+3,115
+8% +$8.69K ﹤0.01% 11447
2024
Q4 		$106K Sell
38,106
-2,414
-6% -$6.33K ﹤0.01% 11404
2024
Q3 		$104K Buy
40,520
+24,974
+161% +$64.3K ﹤0.01% 11063
2024
Q2 		$42.9K Sell
15,546
-13,672
-47% -$42.4K ﹤0.01% 11935
2024
Q1 		$103K Buy
29,218
+3,870
+15% +$12.7K ﹤0.01% 11323
2023
Q4 		$74.5K Buy
25,348
+11,849
+88% +$38.1K ﹤0.01% 11309
2023
Q3 		$51.4K Sell
13,499
-9,258
-41% -$37.5K ﹤0.01% 11731
2023
Q2 		$97.6K Buy
22,757
+4,639
+26% +$20.6K ﹤0.01% 10979
2023
Q1 		$90K Buy
18,118
+10,145
+127% +$44.4K ﹤0.01% 11413
2022
Q4 		$31.7K Buy
+7,973
New +$28.8K ﹤0.01% 12672
2022
Q1 		– Sell
-10,655
Closed -$49K – 13737
2021
Q4 		$49K Buy
+10,655
New +$57K ﹤0.01% 13259
2019
Q2 		– Sell
-13,808
Closed -$77K – 9260
2019
Q1 		$77K Buy
+13,808
New +$81.2K ﹤0.01% 8652
2014
Q2 		– Sell
-13,658
Closed -$33K – 8003
2014
Q1 		$33K Buy
+13,658
New +$37.8K ﹤0.01% 7030

Other funds holding DAIO

KWM
Kanen Wealth Management Coconut Creek, Florida $413M AUM 109.83% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
PM
Penbrook Management New York $157M AUM 46.57% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
KA
Kovack Advisors Ft. Lauderdale, Florida $2.08B AUM 38.95% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
EIM
Essex Investment Management Boston, Massachusetts $763M AUM 108.51% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM

Citadel Advisors's DAIO Position: Q2 2026 in Review

Citadel Advisors opened a new position in Data I/O (DAIO) in Q2 2026: 86,869 shares worth $342K. The stake represents ﹤0.01% of the portfolio and ranks #10825 among its holdings. This is a return to the name: Citadel Advisors previously reported a position in DAIO as recently as Q4 2025.

Citadel Advisors first reported a position in DAIO in Q1 2014 and has held it in 17 quarters since. 35 funds tracked by Wall St. Rank hold DAIO as of Q2 2026.

  • Citadel Advisors held 86,869 shares of Data I/O worth $342K as of Q2 2026.
  • Data I/O was a new Citadel Advisors position in Q2 2026.
  • Data I/O made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #10825 holding.
  • Citadel Advisors first reported a position in Data I/O in Q1 2014 and has held it in 17 quarters since.
  • 35 funds tracked by Wall St. Rank held Data I/O as of Q2 2026.

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