Trader Brian Jones on Twitter: "$GSUM Has a float of 20 million. Up 45% here premarket on improved sales figures. I don't think there's much left here on upside. Not interested in trading this one." / Twitter

$GSUM Has a float of 20 million. Up 45% here premarket on improved sales figures. I don't think there's much left here on upside. Not interested in trading this one.