Roger Federer's billion-dollar fortune evaporated in a single trading session.
His estimated net worth fell to £705 million ($952.4 million) on Tuesday, 11 August 2026, according to Forbes, after shares in On Holding, the Swiss sportswear firm he co-owns, plunged roughly 19 per cent. The single-day slide erased at least £38.5 million ($52 million) from his fortune within hours. It leaves Federer, 45, just below the billionaire threshold he crossed for the first time only a year ago.