| 日期 | 代碼 | 券商 | 原評等→降級後評等 | 新目標價 |
| 2010/8/5 | SONE | Northland Securities | Outperform >> Market Perform | |
| 2005/5/6 | SONE | Piper Jaffray | Outperform->Market Perform | 11 |
| 2005/5/6 | SONE | Friedman Billings | Outperform->Mkt Perform | |
| 2004/2/13 | SONE | Delafield Hambrecht | Buy->Hold | |
| 2003/4/7 | SONE | Stephens Inc | Overweight -> Equal-weight | |