Groupon (GRPN) hit a home run in its quarter. EBITDA was higher than expected and revenue for the quarter and looking ahead were both strong. Will the 20 percent rise in after-hours trading hold? GRPN's still running on too many staff. Its revenue is up, but its efficiency could still improve. If Groupon holds its gains in tomorrow's market, then the momentum may be there to pull the stock closer to $10. Otherwise this stock's gain may be temporary. Short float is a moderate 16%. Stock trades at 2x book but 0.45 times sales. This stock is moderately cheap. $5 - $10 for GRPN is possible, but look for $2 - $4 first.