One trading session put Mukesh Ambani back on top of Asia’s rich list. A sharp rally in Reliance Industries on Monday added $8.5 billion to his estimated fortune, showing how quickly stock-market sentiment can redraw the billionaire rankings. According to Forbes’ report on Monday’s Real-Time Billionaires list, the Reliance chairman’s wealth rose 10.5% to $88.8 billion. That put him ahead of ByteDance co-founder Zhang Yiming, whose fortune was estimated at $84 billion.