Hung-Lun (Fred) Chang is *** See Remarks at APPLIED OPTOELECTRONICS, INC. (AAOI). They have made 21 open-market trades across 1 company since 2014, most recently 2026-09-08.
CIK 0001587462
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 21 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AAOI | 249,276 | $18.8M |
Shares reported on the most recent Form 4, priced at the 2026-09-10 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 |
|---|---|---|---|---|---|---|---|---|
| AAOI | SELL | 2026-09-08 | 2026-09-10 | $110.21 | $3.5M | +1.3% | -4.7% | — |
| AAOI | SELL · 10b5-1 | 2026-06-17 | 2026-06-18 | $170.60 | $6.9M | -14.5% | -36.7% | -40.6% |
| AAOI | SELL | 2026-06-12 | 2026-06-16 | $166.53 | $5.7M | -14.1% | -42.7% | -45.2% |
| AAOI | SELL | 2026-06-05 | 2026-06-08 | $200.07 | $800K | -21.5% | -44.4% | -45.9% |
| AAOI | SELL | 2026-05-19 | 2026-05-19 | $173.26 | $5.8M | +5.3% | -8.2% | -12.1% |
| AAOI | SELL | 2026-03-16 | 2026-03-18 | $100.25 | $7.3M | -4.4% | +78.9% | +91.7% |
| AAOI | SELL | 2025-08-13 | 2025-08-14 | $22.70 | $717K | +14.9% | +35.5% | +9.8% |
| AAOI | SELL | 2025-05-13 | 2025-05-14 | $19.06 | $909K | -2.0% | -18.3% | +20.3% |
| AAOI | SELL · 10b5-1 | 2024-11-08 | 2024-11-12 | $25.04 | $223K | +31.5% | +14.2% | +5.6% |
| AAOI | SELL | 2024-11-08 | 2024-12-10 | $28.82 | $1.6M | +11.2% | -7.1% | -58.4% |
| AAOI | SELL | 2023-08-10 | 2023-08-11 | $14.08 | $384K | +25.1% | -4.9% | -20.3% |
| AAOI | SELL | 2023-08-08 | 2023-08-10 | $12.07 | $781K | +10.6% | -16.8% | -29.6% |
| AAOI | SELL | 2022-11-10 | 2022-11-14 | $2.15 | $217K | -8.8% | -11.3% | +10.0% |
| AAOI | SELL · 10b5-1 | 2021-02-16 | 2021-02-18 | $12.25 | $13K | -28.1% | -29.3% | -35.2% |
| AAOI | SELL | 2021-01-27 | 2021-01-29 | $12.00 | $65K | +2.5% | -21.3% | -31.0% |
| AAOI | SELL · 10b5-1 | 2020-08-17 | 2020-08-19 | $13.36 | $14K | -10.7% | -21.0% | -42.6% |
| AAOI | SELL · 10b5-1 | 2020-07-20 | 2020-07-22 | $12.00 | $13K | +11.3% | -19.3% | -24.7% |
| AAOI | SELL | 2020-07-06 | 2020-07-08 | $11.58 | $137K | +6.4% | +39.9% | -0.8% |
| AAOI | SELL | 2020-06-08 | 2020-06-10 | $10.01 | $50K | +10.4% | +27.9% | +10.4% |
| AAOI | SELL | 2017-06-15 | 2017-06-19 | $60.11 | $601K | -5.2% | +46.3% | +4.8% |
| AAOI | SELL | 2017-05-09 | 2017-05-11 | $59.50 | $595K | +7.6% | +0.6% | +5.0% |
| AAOI | SELL | 2017-03-07 | 2017-03-09 | $54.50 | $164K | -7.3% | -14.5% | +37.4% |
| AAOI | SELL | 2016-11-17 | 2016-11-18 | $25.74 | $515K | -13.0% | -7.2% | +33.0% |
| AAOI | SELL | 2016-08-01 | 2016-08-09 | $13.99 | $24K | -2.5% | +42.1% | +66.8% |
| AAOI | SELL | 2016-03-17 | 2016-03-21 | $17.50 | $13K | -13.0% | -34.1% | -41.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.