Personally, I use the depth of the consolidation right before the breakout to gauge a good sell point. Basically, if you measure the depth of the consolidation (I'm usually pretty conservative with that), and then you measure up from the breakout point, then generally one might do well to sell within that space. With this chart, I would personally would have sold about $1 or $1.25 (at most) above the breakout point, or between $11 (or a bit below it, since it's best to set profit targets a bit below round numbers) to $11.25 (where it ended up stopping anyway). However, since today's move was on fantastic volume, I might have sold half near the close, and then kept the other half to see what might happen next. I hope this helps a bit!