Simplex Trading
DAIO icon

Simplex Trading’s Data I/O DAIO Stock Holding History

Simplex Trading’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 		$38.2K Buy
+9,700
New +$30.4K ﹤0.01% 6549
2025
Q2 		– Sell
-1,100
Closed -$2K – 8832
2025
Q1 		$2K Hold
1,100
– – ﹤0.01% 7960
2024
Q4 		$3K Buy
+1,100
New +$2.88K ﹤0.01% 7860

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
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return
EIM
Essex Investment Management Boston, Massachusetts $763M AUM 108.51% 1-Year Est. Return

Simplex Trading's DAIO Position: Q2 2026 in Review

Simplex Trading increased its Data I/O (DAIO) stake by 55% in Q2 2026, buying an estimated $4.77K and bringing the position to 4,279 shares worth $16.9K. The position accounts for ﹤0.01% of the portfolio, ranked #7259.

Simplex Trading first reported a position in DAIO in Q1 2022 and has held it in 9 quarters since. 35 funds tracked by Wall St. Rank hold DAIO as of Q2 2026.

  • Simplex Trading held 4,279 shares of Data I/O worth $16.9K as of Q2 2026.
  • Simplex Trading bought 1,520 Data I/O shares in Q2 2026, an estimated $4.77K.
  • Data I/O made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #7259 holding.
  • Simplex Trading first reported a position in Data I/O in Q1 2022 and has held it in 9 quarters since.
  • 35 funds tracked by Wall St. Rank held Data I/O as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.