| 日期 | 代碼 | 券商 | 原評等→升級後評等 | 新目標價 |
| 2010/12/3 | NSM | FBR Capital | Mkt Perform >> Outperform | $17.50 >> $20 |
| 2010/3/12 | NSM | Bernstein | Underperform >> Mkt Perform | |
| 2009/9/24 | NSM | Citigroup | Hold >> Buy | |
| 2006/6/9 | NSM | JMP Securities | Mkt Perform Mkt Outperform | 30 |
| 2005/3/22 | NSM | UBS | Neutral->Buy | |