Casino owners and makers of gaming equipment were front and center in a day of big gains and losses for the industry Thursday. Gambling equipment maker WMS Industries (WMS) scorched ahead 51% after Scientific Games (SGMS) said it would buy the company for $1.5 billion. Casino owner Las Vegas Sands (LVS) jumped 6% in heavy trade after its fourth-quarter report. All are part of the Leisure-Gaming/Equipment industry group, which held a No. 17 ranking