Andy Tsong is VP at DIODES INC /DEL/ (DIOD). They have made 5 open-market trades across 1 company since 2023, most recently 2026-05-26.
CIK 0001966189
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 | Shares | Value |
|---|---|---|
| DIOD | 48,170 | $3.8M |
Shares reported on the most recent Form 4, priced at the 2026-05-27 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DIOD | SELL | 2026-05-26 | 2026-05-27 | $106.96 | $169K | -2.2% | -3.0% | -13.2% |
| DIOD | SELL | 2026-05-12 | 2026-05-13 | $110.00 | $292K | +6.2% | +6.8% | +1.2% |
| DIOD | SELL | 2026-02-13 | 2026-02-17 | $70.46 | $231K | -0.5% | -2.1% | +38.4% |
| DIOD | SELL | 2024-05-15 | 2024-05-16 | $73.22 | $167K | -1.0% | +1.0% | -12.7% |
| DIOD | SELL | 2023-08-23 | 2023-08-23 | $82.50 | $164K | -3.8% | -9.5% | -17.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.