Shares of Wynn Resorts ( WYNN -0.08% ) rose 2.8% on a relatively quiet day Monday on speculation the company is gaining market share in Macau. Analysts at Sanford C. Bernstein think that not only will Macau grow double digits again in May, but Wynn will gain market share over rivals like Las Vegas Sands ( LVS 0.06% ) and Melco Entertainment ( MLCO -1.90% ).