| 日期 | 代碼 | 券商 | 原評等→升級後評等 | 新目標價 |
| 2012/3/1 | ATW | Dahlman Rose | Hold >> Buy | 58 |
| 2012/2/3 | ATW | Global Hunter Securities | Accumulate >> Buy | $47 >> $56 |
| 2011/12/7 | ATW | Morgan Keegan | Mkt Perform >> Outperform | |
| 2011/4/15 | ATW | Howard Weil | Market Perform >> Market Outperform | $40 >> $56 |
| 2010/3/1 | ATW | Howard Weil | Market Perform >> Market Outperform | 48 |