| Upgrades & Downgrades History |
|---|
| Date | Research Firm | Action | From | To |
|---|
| Feb 27, 2012 | Dougherty & Company | Initiated | | Buy | | Nov 10, 2011 | Needham | Upgrade | Hold | Buy | | Apr 16, 2007 | WR Hambrecht | Downgrade | Buy | Hold | | Apr 16, 2007 | Needham & Co | Downgrade | Buy | Hold | | Jan 9, 2007 | Needham & Co | Initiated | | Buy | | Jan 8, 2007 | Thomas Weisel | Initiated | | Overweight | | Jan 8, 2007 | WR Hambrecht | Initiated | | Buy |
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| Current Month | Last Month | Two Months Ago | Three Months Ago |
|---|
| Strong Buy | 1 | 1 | 0 | 0 |
|---|
| Buy | 0 | 0 | 0 | 0 |
|---|
| Hold | 0 | 0 | 0 | 0 |
|---|
| Underperform | 0 | 0 | 0 | 0 |
|---|
| Sell | 0 | 0 | 0 | 0 |
|---|
|
Data provided by Thomson/First Call
Currency in USD. |