| 日期 | 代碼 | 券商 | 原評等→降級後評等 | 新目標價 |
| 2011/4/12 | AA | BMO Capital Markets | Market Perform >> Underperform | |
| 2011/1/11 | AA | RBC Capital Mkts | Sector Perform >> Underperform | $15 >> $16 |
| 2010/11/11 | AA | BMO Capital Markets | Outperform >> Market Perform | |
| 2010/11/8 | AA | Davenport | Buy >> Neutral | |
| 2010/4/13 | AA | UBS | Buy >> Neutral | $17 >> $16 |