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 Q2	$294K	Sell	74,558 -83	-0.1%	-$261	0.04%	196
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 New York $72.6B AUM 54.88% 1-Year Est. Return

Penbrook Management New York $157M AUM 46.57% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Kovack Advisors Ft. Lauderdale, Florida $2.08B AUM 38.95% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM

Essex Investment Management's DAIO Position: Q2 2026 in Review

Essex Investment Management reduced its Data I/O (DAIO) stake by 0.11% in Q2 2026, selling an estimated $261 and leaving 74,558 shares worth $294K. The position accounts for 0.04% of the portfolio, ranked #196.

Essex Investment Management first reported a position in DAIO in Q4 2016 and has held it in 20 quarters since. The position peaked at $505K in Q4 2017. 35 funds tracked by Wall St. Rank hold DAIO as of Q2 2026.

Essex Investment Management held 74,558 shares of Data I/O worth $294K as of Q2 2026.
Essex Investment Management sold 83 Data I/O shares in Q2 2026, an estimated $261.
Data I/O made up 0.04% of Essex Investment Management's portfolio in Q2 2026, its #196 holding.
Essex Investment Management first reported a position in Data I/O in Q4 2016 and has held it in 20 quarters since.
Essex Investment Management's Data I/O position peaked at $505K in Q4 2017.
35 funds tracked by Wall St. Rank held Data I/O as of Q2 2026.

Based on Essex Investment Management's 13F filing for Q2 2026, filed 6 Aug 2026.