Out of FB Oct 04 '13 $49 Calls @ $2.44...

Original straddle = $2.71...

Expecting this thing to retrace as the calls are getting sold, so will get into the $51 strike straddles...

$1.11 per share gain on this leg, or 83.45% gross gain...

If puts expire, then loss will be $0.27, or 9.96% haircut...