NEW YORK (AP) - Shares of theme park company Six Flags Inc. gained Thursday, after an analyst expressed confidence in new Chief Executive Mark Shapiro's ability to turn around the company by selling off assets.

Six Flags, whose stock gained 37 percent last year, installed Shapiro as its new CEO and president in December, marking the end of a lengthy proxy fight launched by shareholder and Washington Redskins owner Dan Snyder to take control of the nation's No. 2 amusement park operator.