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William O. Wentworth

DAIO
PRESIDENT · DATA I/O CORP · CIK 0001977418
FILING MIX · LIFETIME100%/0%
BUYS
8
SELLS
0
TOTAL VALUE
$664.8K
COMPANIES
1
ACTIVE SINCE
May 2023
HOLDINGS NOW
53,972
AVG SELL PX
TRADE KIND
SHOWING 8 / 8
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
2 backtested trades · 8 horizons · 2 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by William O. Wentworth, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d2+100.00%+7.44%+3.10%+4.34%+4.34%
14d2+100.00%+6.42%+5.91%+0.51%+0.51%
30d2+100.00%+16.58%+5.83%+10.75%+10.75%
60d2+100.00%+33.20%+11.27%+21.93%+21.93%
90d2+100.00%+40.27%+13.28%+26.99%+26.99%
180d2+100.00%+28.32%+22.66%+5.67%+5.67%
1y2+100.00%+19.15%+30.18%-11.04%-11.04%
2y2(2 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
DAIO · 53,972 shares · as of Dec 3, 2025
050,000100,000150,000200,00020242025SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
FLOW · 8 buys / 0 sellsCOVERAGE · 11 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
1,100$2.80$3.1K53,972Dec 3, 2025Dec 5, 2025View →
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
7,455$2.78$20.8K52,872Dec 2, 2025Dec 5, 2025View →
DAIO
DATA I/O CORP
PURCHASE
President
10,332$2.42$25.0K45,417May 6, 2025May 7, 2025View →
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
10,585$2.36$25.0K35,085May 2, 2025May 5, 2025View →
DAIO
DATA I/O CORP
PURCHASE
President
10,585$2.36$25.0K35,085May 1, 2025May 8, 2025View →
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
200,000$2.39$478.5K200,000Sep 3, 2024Sep 4, 2024View →
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
14,100$2.93$41.3K24,500May 16, 2024May 16, 2024View →
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
10,400$4.45$46.3K10,400May 18, 2023May 19, 2023View →
Other insiders · DAIO
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About this filer
CIK 0001977418
ROLE
President
PRIMARY
DAIO
COMPANIES
1
ACTIVE SINCE
May 2023
MARKETPEEL · /INSIDER/0001977418DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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