| 日期 | 代碼 | 券商 | 原評等→升級後評等 | 新目標價 |
| 2010/5/25 | ADTN | Barclays Capital | Equal Weight >> Overweight | $28 >> $31 |
| 2009/9/25 | ADTN | Thomas Weisel | Market Weight >> Overweight | |
| 2009/9/11 | ADTN | Morgan Keegan | Mkt Perform >> Outperform | |
| 2009/7/16 | ADTN | Credit Suisse | Underperform >> Neutral | |
| 2009/7/2 | ADTN | Citigroup | Hold >> Buy | |