EIM
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Essex Investment Management’s Data I/O DAIO Stock Holding History

Essex Investment Management’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 		$189K Hold
74,641
– – 0.03% 202
2025
Q4 		$237K Hold
74,641
– – 0.04% 195
2025
Q3 		$249K Hold
74,641
– – 0.04% 193
2025
Q2 		$231K Buy
74,641
+30,950
+71% +$78K 0.04% 187
2025
Q1 		$107K Buy
43,691
+4,628
+12% +$12.9K 0.02% 218
2024
Q4 		$108K Buy
39,063
+10,679
+38% +$28K 0.02% 221
2024
Q3 		$72.9K Hold
28,384
– – 0.01% 245
2024
Q2 		$78.3K Sell
28,384
-53,606
-65% -$166K 0.01% 238
2024
Q1 		$289K Buy
81,990
+18,053
+28% +$59.1K 0.06% 194
2023
Q4 		$188K Sell
63,937
-23,228
-27% -$74.8K 0.04% 214
2023
Q3 		$332K Sell
87,165
-5,031
-5% -$20.4K 0.05% 251
2023
Q2 		$396K Buy
92,196
+1,780
+2% +$7.89K 0.06% 261
2023
Q1 		$449K Buy
+90,416
New +$396K 0.07% 253
2019
Q2 		– Sell
-34,614
Closed -$192K – 487
2019
Q1 		$192K Buy
+34,614
New +$204K 0.03% 346
2018
Q1 		– Sell
-41,922
Closed -$505K – 376
2017
Q4 		$505K Hold
41,922
– – 0.07% 269
2017
Q3 		$418K Buy
41,922
+25,361
+153% +$217K 0.06% 282
2017
Q2 		$132K Buy
16,561
+3,055
+23% +$20.4K 0.02% 325
2017
Q1 		$67K Hold
13,506
– – 0.01% 342
2016
Q4 		$56K Buy
+13,506
New +$53.7K 0.01% 336

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
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
SPIA
Steward Partners Investment Advisory New York $19.6B AUM 29.84% 1-Year Est. Return

Essex Investment Management's DAIO Position: Q1 2026 in Review

Essex Investment Management held its Data I/O (DAIO) position steady in Q1 2026 at 74,641 shares worth $189K. The position accounts for 0.03% of the portfolio, ranked #202.

Essex Investment Management first reported a position in DAIO in Q4 2016 and has held it in 19 quarters since. The position peaked at $505K in Q4 2017. 29 funds tracked by Wall St. Rank hold DAIO as of Q1 2026.

  • Essex Investment Management held 74,641 shares of Data I/O worth $189K as of Q1 2026.
  • Essex Investment Management left its Data I/O share count unchanged in Q1 2026.
  • Data I/O made up 0.03% of Essex Investment Management's portfolio in Q1 2026, its #202 holding.
  • Essex Investment Management first reported a position in Data I/O in Q4 2016 and has held it in 19 quarters since.
  • Essex Investment Management's Data I/O position peaked at $505K in Q4 2017.
  • 29 funds tracked by Wall St. Rank held Data I/O as of Q1 2026.

Based on Essex Investment Management's 13F filing for Q1 2026, filed 11 May 2026.