‘White knuckle’ week for tech titans as shares and fortunes fall

Nine of world’s 10 richest billionaires see wealth dented as rising interest rates spur sell-off of ‘stay at home’ stocksThe world’s richest billionaires have lost more than $50bn (£37bn) this week as their fortunes – mostly held in technology companies – dropped in a “white knuckle” rout on tech shares.Elon Musk, the wealthiest person on the planet, saw his fortune fall by $25.8bn in a single day on Thursday, according to the latest data ava