Anthony Ambrose is President at DATA I/O CORP (DAIO). They have made 11 open-market trades across 2 companies since 2011, most recently 2024-06-01.
CIK 0001439759
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
5 open-market purchases totalling $90K since 2011, against 6 sales. Across 5 scored buys the stock is up 1.7% at ninety days, and 2.7 points behind the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 0% | 60% | 60% |
| Avg Move | -4.2% | +1.2% | +1.7% |
| Alpha | +2.1% | +0.1% | -2.7% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DAIO | SELL | 2021-11-01 | 2021-11-01 | $5.31 | $112K | +0.0% | -16.6% | -6.5% |
| DAIO | SELL · 10b5-1 | 2021-10-01 | 2021-10-04 | $6.30 | $50K | +3.8% | -9.7% | -24.1% |
| DAIO | SELL | 2021-09-01 | 2021-09-02 | $5.65 | $305K | +11.8% | +9.7% | -22.4% |
| DAIO | SELL | 2021-06-02 | 2021-06-04 | $6.15 | $231K | +10.0% | +1.3% | -7.2% |
| DAIO | SELL | 2021-04-05 | 2021-04-07 | $5.56 | $299K | -3.0% | -4.8% | +10.7% |
| DAIO | BUY | 2020-03-12 | 2020-03-12 | $2.74 | $27K | -2.0% | +7.0% | +9.4% |
| DAIO | SELL | 2017-11-27 | 2017-11-29 | $15.97 | $319K | -0.2% | -4.2% | -37.4% |
| DAIO | SELL | 2017-11-01 | 2017-11-03 | $12.73 | $107K | -2.0% | -8.9% | -9.2% |
| DAIO | BUY | 2012-11-21 | 2012-11-27 | $1.50 | $10K | -0.4% | +0.7% | +0.7% |
| DAIO | BUY | 2012-11-12 | 2012-11-14 | $1.73 | $17K | -0.4% | +0.7% | +0.7% |
| RSYS | BUY | 2011-06-07 | 2011-06-09 | $8.05 | $3K | -9.1% | -1.1% | -1.1% |
| RSYS | BUY | 2011-06-06 | 2011-06-07 | $8.08 | $32K | -9.1% | -1.1% | -1.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.