Six Flags Entertainment Corp (NYSE:FUN) shares are soaring late Tuesday after The Wall Street Journal reported that NFL star Travis Kelce is teaming up with activist investor Jana Partners to push for changes at the company.FUN is among today’s top performers. Get the latest updates here.What To Know: According to the Wall Street Journal report, the investor group has acquired a 9% stake and is advocating for strategic shifts to boost the theme-park operator’s lagging share price.The report sparked a wave o ...