Emily Yang is VP at DIODES INC /DEL/ (DIOD). They have made 31 open-market trades across 1 company since 2019, most recently 2026-05-27.
CIK 0001726369
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 31 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| DIOD | 61,878 | $4.9M |
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 | $109.06 | $545K | -2.2% | -3.0% | -13.2% |
| DIOD | SELL | 2026-05-20 | 2026-05-21 | $96.81 | $194K | +18.7% | +24.8% | -3.7% |
| DIOD | SELL | 2026-05-15 | 2026-05-19 | $101.47 | $203K | +4.7% | +22.6% | +10.6% |
| DIOD | SELL | 2026-02-24 | 2026-02-26 | $69.89 | $151K | -7.2% | -5.4% | +60.9% |
| DIOD | SELL | 2026-02-13 | 2026-02-17 | $71.89 | $72K | -0.5% | -2.1% | +38.4% |
| DIOD | SELL | 2026-02-03 | 2026-02-04 | $60.85 | $58K | +15.8% | +6.1% | +92.9% |
| DIOD | SELL | 2025-08-28 | 2025-08-28 | $56.36 | $56K | -5.7% | -5.3% | -17.3% |
| DIOD | SELL | 2025-08-19 | 2025-08-21 | $53.22 | $53K | -1.4% | +2.9% | -19.2% |
| DIOD | SELL | 2025-02-04 | 2025-02-05 | $56.04 | $53K | -5.0% | -15.4% | -33.3% |
| DIOD | SELL | 2024-08-30 | 2024-09-03 | $70.48 | $70K | -1.6% | -0.8% | +4.5% |
| DIOD | SELL | 2024-08-26 | 2024-09-03 | $72.16 | $182K | -1.6% | -0.8% | +4.5% |
| DIOD | SELL | 2024-02-02 | 2024-02-05 | $66.81 | $127K | +3.0% | -0.1% | +10.2% |
| DIOD | SELL | 2023-05-30 | 2023-05-31 | $96.62 | $531K | +3.6% | +2.4% | -9.6% |
| DIOD | SELL | 2023-05-17 | 2023-05-19 | $94.58 | $461K | -3.9% | -2.9% | -15.5% |
| DIOD | SELL | 2023-02-23 | 2023-02-27 | $91.92 | $719K | -0.8% | +0.0% | +0.5% |
| DIOD | SELL | 2023-02-17 | 2023-02-22 | $91.75 | $356K | -1.3% | -2.3% | -0.4% |
| DIOD | SELL | 2023-02-16 | 2023-02-16 | $95.12 | $95K | -1.5% | -3.7% | -1.1% |
| DIOD | SELL | 2023-02-02 | 2023-02-03 | $93.72 | $89K | +4.6% | -1.1% | -9.3% |
| DIOD | SELL | 2021-11-04 | 2021-11-05 | $105.00 | $133K | -0.9% | -2.0% | -18.3% |
| DIOD | SELL | 2021-11-02 | 2021-11-03 | $100.00 | $100K | +7.5% | +6.9% | -9.1% |
| DIOD | SELL | 2021-08-27 | 2021-08-31 | $95.30 | $123K | -1.3% | -6.7% | +11.5% |
| DIOD | SELL | 2021-08-23 | 2021-08-25 | $92.30 | $196K | +2.4% | +1.2% | +15.0% |
| DIOD | SELL | 2021-01-07 | 2021-01-08 | $78.33 | $78K | +4.7% | +4.3% | +6.5% |
| DIOD | SELL | 2020-12-31 | 2021-01-05 | $73.43 | $260K | +3.8% | +0.7% | +13.1% |
| DIOD | SELL | 2020-11-30 | 2020-12-01 | $66.74 | $67K | -2.1% | +2.0% | +18.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.