Activist Jana Partners urges Six Flags to explore sale, WSJ reports

​Activist ​hedge ‌fund Jana ​Partners is urging ‌theme-park operator Six Flags Entertainment to explore ‌a sale, the ‌Wall Street Journal reported on ⁠Tuesday, citing ​people ⁠familiar with the ⁠matter. Shares of Six ​Flags rose 5.6% ⁠in after-market trading following ⁠the ​report.

Reuters could not Immediately ⁠verify the report.