Six Flags Shares Rise on WSJ Report of Activist Jana Partners Urging Sale

By Elias SchisgallShares of Six Flags Entertainment rose after The Wall Street Journal reported that activist hedge fund Jana Partners is pushing for the amusement-park operator to explore a sale.Shares rose 5% to $12.91 in after-hours trading on Tuesday. The stock closed at $12.30, down 0.7% for t…