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Douglas Wells Brown

DAIO
DIRECTOR · DATA I/O CORP · CIK 0001517364
FILING MIX · LIFETIME67%/33%
BUYS
8
SELLS
4
TOTAL VALUE
$546.1K
COMPANIES
1
ACTIVE SINCE
May 2020
HOLDINGS NOW
101,759
AVG SELL PX
$6.56
TRADE KIND
SHOWING 12 / 12
Trades · vs SPY
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Performance · forward returns vs SPY
5 backtested trades · 8 horizons · 1 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Douglas Wells Brown, 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
7d5+40.00%-0.46%+0.05%-0.52%-2.04%
14d5+40.00%-3.03%-0.99%-2.03%-7.55%
30d5+60.00%-5.60%+1.84%-7.45%-8.70%
60d5+20.00%-3.61%+3.24%-6.85%-0.73%
90d5+80.00%-12.85%+6.52%-19.37%-15.27%
180d5+100.00%-19.25%+3.92%-23.17%-29.81%
1y5+100.00%-35.95%+0.38%-36.33%-43.20%
2y5(1 pending)+100.00%-33.97%+3.86%-37.83%-35.43%
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 · 101,759 shares · as of May 15, 2025
025,44050,88076,319101,75920212022202320242025SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
FLOW · 8 buys / 4 sellsCOVERAGE · 21 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
20,300$2.48$50.3K101,759May 15, 2025May 19, 2025View →
DAIO
DATA I/O CORP
PURCHASE
3,000$2.66$8.0K81,459Aug 26, 2024Aug 29, 2024View →
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
14,100$2.93$41.3K78,459May 16, 2024May 16, 2024View →
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
10,400$4.45$46.3K64,359May 18, 2023May 22, 2023View →
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
10,800$3.09$33.4K53,959May 19, 2022May 20, 2022View →
DAIO
DATA I/O CORP
SALE
12,000$7.28$87.3K44,159Sep 9, 2021Sep 9, 2021View →
DAIO
DATA I/O CORP
SALE
5,360$6.47$34.7K56,159Aug 4, 2021Aug 4, 2021View →
DAIO
DATA I/O CORP
SALE
15,714$6.09$95.7K60,519Jun 7, 2021Jun 8, 2021View →
DAIO
DATA I/O CORP
SALE
2,900$6.26$18.2K76,233Jun 4, 2021Jun 8, 2021View →
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
9,300$6.38$59.3K79,133May 20, 2021May 21, 2021View →
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
4,859$3.21$15.6K69,833Sep 30, 2020Oct 2, 2020View →
DAIO
DATA I/O CORP
PURCHASEGRANT
Stock grant
18,600$3.01$56.0K64,974May 18, 2020May 19, 2020View →
Other insiders · DAIO
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About this filer
CIK 0001517364
ROLE
Director
PRIMARY
DAIO
COMPANIES
1
ACTIVE SINCE
May 2020
MARKETPEEL · /INSIDER/0001517364DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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