Manchester United shares suffered a record 1-day rout, plummeting 18% on report the group's owners won't sell

• Manchester United's stock price suffered a record one-day fall on Tuesday.
• Shares plummeted 18%, wiping over $800 million off the soccer giant's market value.
• The plunge came after the Mail on Sunday reported the club’s owners were no longer looking to sell.

Manchester United shares suffered their biggest-ever one-day wipeout Tuesday after a report said the club's unpopular American owners would be taking it off the market.