Keh Shew Lu is CEO & President at DIODES INC /DEL/ (DIOD). They have made 115 open-market trades across 2 companies since 2006, most recently 2026-05-26.
CIK 0001196531
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.
9 open-market purchases totalling $3.9M since 2006, against 106 sales. Across 9 scored buys the stock is down 1.4% at ninety days, and 1.7 points behind the S&P over the same stretch.
9 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| DIOD | 90,305 | $7.5M |
Shares reported on the most recent Form 4, priced at the 2026-05-28 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 0% | 0% | 0% |
| Avg Move | -11.8% | -1.4% | -1.4% |
| Alpha | -6.0% | -1.7% | -1.7% |
| Scored | 9 | 9 | 9 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DIOD | SELL | 2026-02-20 | 2026-02-24 | $67.76 | $7.5M | -12.4% | +0.5% | +53.1% |
| DIOD | SELL | 2025-11-12 | 2025-11-13 | $47.43 | $384K | +3.2% | +15.4% | +78.1% |
| DIOD | SELL | 2024-08-19 | 2024-08-21 | $67.25 | $1.3M | -8.0% | -12.9% | -20.8% |
| DIOD | SELL | 2024-05-22 | 2024-05-24 | $75.30 | $1.1M | -0.3% | -3.0% | -8.8% |
| DIOD | SELL | 2024-05-16 | 2024-05-20 | $73.40 | $1.8M | +2.1% | -0.8% | -7.3% |
| DIOD | SELL | 2024-05-14 | 2024-05-16 | $73.05 | $1.9M | -1.0% | +1.0% | -12.7% |
| DIOD | SELL | 2024-02-29 | 2024-03-01 | $68.14 | $204K | -3.2% | +0.0% | +3.3% |
| DIOD | SELL | 2024-02-26 | 2024-02-27 | $68.87 | $1.0M | +4.7% | +5.0% | +9.9% |
| DIOD | SELL | 2024-02-20 | 2024-02-22 | $68.71 | $618K | -3.0% | -0.5% | +8.9% |
| DIOD | SELL | 2023-05-30 | 2023-05-31 | $97.00 | $291K | +3.6% | +2.4% | -9.6% |
| DIOD | SELL | 2023-05-26 | 2023-05-26 | $96.40 | $289K | -4.4% | -9.4% | -16.7% |
| DIOD | SELL | 2023-05-22 | 2023-05-24 | $95.71 | $418K | -0.1% | -4.3% | -8.2% |
| DIOD | SELL | 2023-05-17 | 2023-05-19 | $94.05 | $4.2M | -3.9% | -2.9% | -15.5% |
| DIOD | SELL | 2023-02-14 | 2023-02-16 | $97.00 | $485K | -1.5% | -3.7% | -1.1% |
| DIOD | SELL | 2023-02-07 | 2023-02-09 | $96.20 | $289K | -4.7% | -5.9% | -7.6% |
| DIOD | SELL | 2023-02-01 | 2023-02-03 | $93.40 | $2.3M | +4.6% | -1.1% | -9.3% |
| DIOD | SELL | 2022-11-30 | 2022-12-01 | $91.38 | $731K | -0.3% | -14.5% | +3.9% |
| DIOD | SELL | 2022-11-23 | 2022-11-28 | $89.88 | $714K | -0.4% | -16.1% | +3.9% |
| DIOD | SELL | 2022-11-18 | 2022-11-22 | $89.50 | $539K | +0.3% | -11.8% | +0.8% |
| DIOD | SELL | 2022-11-15 | 2022-11-15 | $85.32 | $3.7M | +2.4% | -4.4% | +11.5% |
| DIOD | SELL | 2022-11-10 | 2022-11-14 | $82.33 | $988K | +5.8% | +2.1% | +13.4% |
| DIOD | SELL | 2022-08-16 | 2022-08-18 | $83.11 | $249K | -10.1% | -17.0% | +6.9% |
| DIOD | SELL | 2022-01-03 | 2022-01-05 | $113.18 | $423K | -11.7% | -14.4% | -24.8% |
| DIOD | SELL | 2021-12-27 | 2021-12-29 | $112.45 | $675K | -10.3% | -21.9% | -14.2% |
| DIOD | SELL | 2021-12-07 | 2021-12-09 | $112.00 | $336K | -3.9% | -9.8% | -22.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.