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
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 $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 $157M AUM 46.57% 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

Simplex Trading's DAIO Position: Q1 2026 in Review

Simplex Trading increased its Data I/O (DAIO) stake by 43% in Q1 2026, buying an estimated $2.41K and bringing the position to 2,759 shares worth $6.98K. The position accounts for ﹤0.01% of the portfolio, ranked #7663.

Simplex Trading first reported a position in DAIO in Q1 2022 and has held it in 8 quarters since. The position peaked at $16K in Q2 2025. 29 funds tracked by Wall St. Rank hold DAIO as of Q1 2026.

  • Simplex Trading held 2,759 shares of Data I/O worth $6.98K as of Q1 2026.
  • Simplex Trading bought 827 Data I/O shares in Q1 2026, an estimated $2.41K.
  • Data I/O made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #7663 holding.
  • Simplex Trading first reported a position in Data I/O in Q1 2022 and has held it in 8 quarters since.
  • Simplex Trading's Data I/O position peaked at $16K in Q2 2025.
  • 29 funds tracked by Wall St. Rank held Data I/O as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.