Gary Yu is COO at DIODES INC /DEL/ (DIOD). They have made 11 open-market trades across 1 company since 2023, most recently 2026-05-27.
CIK 0001848176
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 11 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| DIOD | 108,147 | $8.6M |
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 | 2026-05-27 | 2026-05-27 | $110.08 | $400K | -2.2% | -3.0% | -13.2% |
| DIOD | SELL | 2026-02-24 | 2026-02-26 | $70.00 | $140K | -7.2% | -5.4% | +60.9% |
| DIOD | SELL | 2026-02-03 | 2026-02-04 | $60.85 | $176K | +15.8% | +6.1% | +92.9% |
| DIOD | SELL | 2025-02-04 | 2025-02-05 | $56.04 | $163K | -5.0% | -15.4% | -33.3% |
| DIOD | SELL | 2024-02-02 | 2024-02-05 | $66.81 | $194K | +3.0% | -0.1% | +10.2% |
| DIOD | SELL | 2023-08-30 | 2023-08-31 | $80.96 | $437K | -6.6% | -2.7% | -17.8% |
| DIOD | SELL | 2023-08-23 | 2023-08-25 | $82.62 | $273K | -2.9% | -5.7% | -15.0% |
| DIOD | SELL | 2023-05-26 | 2023-05-26 | $96.50 | $97K | -4.4% | -9.4% | -16.7% |
| DIOD | SELL | 2023-05-22 | 2023-05-24 | $95.07 | $95K | -0.1% | -4.3% | -8.2% |
| DIOD | SELL | 2023-05-16 | 2023-05-17 | $90.81 | $272K | -1.2% | -0.0% | -14.7% |
| DIOD | SELL | 2023-02-02 | 2023-02-03 | $93.72 | $119K | +4.6% | -1.1% | -9.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.