Digital financial services giant Ant Group is set to pull off the world’s biggest initial public offering, or IPO. Chinese billionaire Jack Ma, the co-founder and former executive chairman of Alibaba which owns the Post, controls Ant Group through ownership of over half of its shares. Ant operates China’s massive e-payment system Alipay, but its services also extend into lending, investment and insurance products. With 95.6 per cent of its revenue coming from within China mainland, the Hangzhou…