David T. Riddiford is Director at VICOR CORP (VICR). They have made 5 open-market trades across 1 company since 2007, most recently 2016-11-29.
CIK 0001111768
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.
0 open-market purchases, against 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| VICR | SELL | 2016-11-23 | 2016-11-29 | $14.81 | $266K | +3.7% | +3.4% | +8.7% |
| VICR | SELL | 2011-03-08 | 2011-03-09 | $15.40 | $56K | -15.1% | +1.6% | +1.6% |
| VICR | SELL | 2010-11-02 | 2010-11-03 | $17.60 | $88K | -15.1% | +1.6% | +1.6% |
| VICR | SELL | 2008-06-06 | 2008-06-10 | $11.00 | $50K | -15.1% | +1.6% | +1.6% |
| VICR | SELL | 2007-05-31 | 2007-06-01 | $11.89 | $54K | -15.1% | +1.6% | +1.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.