TRCT
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Tower Research Capital (TRC)’s Data I/O DAIO Stock Holding History

Tower Research Capital (TRC)’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 		$4.25K Sell
1,681
-450
-21% -$1.31K ﹤0.01% 4219
2025
Q4 		$6.75K Buy
2,131
+1,100
+107% +$3.3K ﹤0.01% 4050
2025
Q3 		$3.44K Sell
1,031
-113
-10% -$366 ﹤0.01% 4505
2025
Q2 		$3.55K Sell
1,144
-463
-29% -$1.17K ﹤0.01% 4477
2025
Q1 		$3.94K Sell
1,607
-76
-5% -$212 ﹤0.01% 4324
2024
Q4 		$4.66K Sell
1,683
-179
-10% -$469 ﹤0.01% 4420
2024
Q3 		$4.79K Sell
1,862
-588
-24% -$1.51K ﹤0.01% 4425
2024
Q2 		$6.76K Sell
2,450
-275
-10% -$853 ﹤0.01% 4542
2024
Q1 		$9.59K Sell
2,725
-175
-6% -$573 ﹤0.01% 3828
2023
Q4 		$8.53K Buy
2,900
+615
+27% +$1.98K ﹤0.01% 4503
2023
Q3 		$8.71K Buy
2,285
+666
+41% +$2.7K ﹤0.01% 4313
2023
Q2 		$6.95K Sell
1,619
-2,032
-56% -$9K ﹤0.01% 4641
2023
Q1 		$18K Sell
3,651
-119
-3% -$521 ﹤0.01% 3539
2022
Q4 		$15K Buy
3,770
+2,113
+128% +$7.63K ﹤0.01% 3404
2022
Q3 		$4K Buy
1,657
+391
+31% +$1.26K ﹤0.01% 5238
2022
Q2 		$3K Buy
1,266
+835
+194% +$2.76K ﹤0.01% 5361
2022
Q1 		$2K Sell
431
-834
-66% -$3.9K ﹤0.01% 5527
2021
Q4 		$6K Buy
1,265
+211
+20% +$1.13K ﹤0.01% 5015
2021
Q3 		$7K Buy
+1,054
New +$6.42K ﹤0.01% 4630
2021
Q2 		– Sell
-822
Closed -$4K – 5525
2021
Q1 		$4K Buy
822
+225
+38% +$1.2K ﹤0.01% 4763
2020
Q4 		$3K Sell
597
-1,815
-75% -$7K ﹤0.01% 4787
2020
Q3 		$7K Sell
2,412
-3,257
-57% -$11.5K ﹤0.01% 4229
2020
Q2 		$19K Buy
5,669
+5,529
+3,949% +$17.3K ﹤0.01% 3703
2020
Q1 		$0 Sell
140
-251
-64% -$919 ﹤0.01% 3191
2019
Q4 		$2K Buy
391
+219
+127% +$878 ﹤0.01% 3032
2019
Q3 		$1K Buy
+172
New +$694 ﹤0.01% 3832
2019
Q2 		– Sell
-4,241
Closed -$24K – 3789
2019
Q1 		$24K Buy
4,241
+1,106
+35% +$6.5K ﹤0.01% 2162
2018
Q4 		$16K Buy
3,135
+2,482
+380% +$12.3K ﹤0.01% 2103
2018
Q3 		$3K Sell
653
-1,509
-70% -$8.48K ﹤0.01% 3284
2018
Q2 		$14K Sell
2,162
-257
-11% -$1.82K ﹤0.01% 2616
2018
Q1 		$18K Buy
2,419
+1,925
+390% +$19.1K ﹤0.01% 2216
2017
Q4 		$6K Buy
+494
New +$5.85K ﹤0.01% 2804
2017
Q3 		– Sell
-3,783
Closed -$30K – 3828
2017
Q2 		$30K Buy
+3,783
New +$25.2K ﹤0.01% 1000
2016
Q4 		– Sell
-621
Closed -$2K – 3895
2016
Q3 		$2K Sell
621
-282
-31% -$924 ﹤0.01% 3053
2016
Q2 		$2K Buy
903
+345
+62% +$834 ﹤0.01% 3878
2016
Q1 		$1K Buy
558
+190
+52% +$433 ﹤0.01% 3660
2015
Q4 		$1K Buy
368
+268
+268% +$733 ﹤0.01% 4048
2015
Q3 		$0 Sell
100
-629
-86% -$1.78K ﹤0.01% 4122
2015
Q2 		$2K Buy
729
+468
+179% +$1.59K ﹤0.01% 3708
2015
Q1 		$1K Buy
+261
New +$860 ﹤0.01% 4038
2014
Q4 		– Sell
-1,962
Closed -$6K – 4121
2014
Q3 		$6K Buy
1,962
+1,308
+200% +$4.03K ﹤0.01% 3156
2014
Q2 		$2K Buy
654
+68
+12% +$183 ﹤0.01% 3373
2014
Q1 		$1K Sell
586
-106
-15% -$293 ﹤0.01% 4123
2013
Q4 		$2K Buy
+692
New +$1.94K ﹤0.01% 3987

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

Tower Research Capital (TRC)'s DAIO Position: Q1 2026 in Review

Tower Research Capital (TRC) reduced its Data I/O (DAIO) stake by 21% in Q1 2026, selling an estimated $1.31K and leaving 1,681 shares worth $4.25K. The position accounts for ﹤0.01% of the portfolio, ranked #4219.

Tower Research Capital (TRC) first reported a position in DAIO in Q4 2013 and has held it in 44 quarters since. The position peaked at $30K in Q2 2017. 29 funds tracked by Wall St. Rank hold DAIO as of Q1 2026.

  • Tower Research Capital (TRC) held 1,681 shares of Data I/O worth $4.25K as of Q1 2026.
  • Tower Research Capital (TRC) sold 450 Data I/O shares in Q1 2026, an estimated $1.31K.
  • Data I/O made up ﹤0.01% of Tower Research Capital (TRC)'s portfolio in Q1 2026, its #4219 holding.
  • Tower Research Capital (TRC) first reported a position in Data I/O in Q4 2013 and has held it in 44 quarters since.
  • Tower Research Capital (TRC)'s Data I/O position peaked at $30K in Q2 2017.
  • 29 funds tracked by Wall St. Rank held Data I/O as of Q1 2026.

Based on Tower Research Capital (TRC)'s 13F filing for Q1 2026, filed 15 May 2026.