Discretionary plays casinos and gaming stocks are benefiting from some strong buying interest today. In addition to broad market support, their advance stems partly from the decision by analysts at UBS to upgrade Las Vegas Sands (LVS 42.61, +0.65), which is a new two-week high. Wynn Resorts (WYNN 127.97, +3.73) has made an especially strong bounce in the wake of the LVS upgrade, but it is still several dollars shy of its 52-week high.