Shares of Wynn Resorts, Limited tumbled more than 10 percent in after-hours trading after the company reported downbeat Q1 results and lowered its dividend to $0.50 per share from $1.5 per share. The Las Vegas, Nevada-based company reported a quarterly loss of $44.6 million, or $0.44 per share, down from $226.9 million, or $2.22 per share, in the year-earlier quarter.