Sports Direct have 536,970,000 shares.
Mike Ashley owns about 327,552,000 of them.
July's share price was 410p, worth £1,342,963,000.20b to Ashley.
Today's share price is 345.6p, worth £1,132,019,000.71b to Ashley.
He's lost £210,944,000 in six weeks. He's not bulletproof.