| 日期 | 代碼 | 券商 | 原評等→升級後評等 | 新目標價 |
| 2011/4/21 | SLW | Canaccord Genuity | Hold >> Buy | |
| 2010/11/26 | SLW | BMO Capital Markets | Market Perform >> Outperform | $40 >> $46 |
| 2009/11/23 | SLW | RBC Capital Mkts | Sector Perform >> Outperform | |
| 2009/3/10 | SLW | CIBC Wrld Mkts | Sector Underperform Sector Perform | |
| 2009/1/13 | SLW | UBS | Neutral Buy | |