| 日期 | 代碼 | 券商 | 原評等→升級後評等 | 新目標價 |
| 2006/11/10 | AMCC | CIBC Wrld Mkts | Sector Perform Sector Outperform | 4 |
| 2005/10/4 | AMCC | Goldman Sachs | Underperform->In-Line | |
| 2005/3/17 | AMCC | Pacific Growth Equities | Equal Weight->Over Weight | |
| 2004/4/21 | AMCC | CIBC Wrld Mkts | Sector Underperform->Sector Perform | |
| 2004/1/15 | AMCC | Lehman Brothers | Equal-weight->Overweight | |