Ant Group, China's financial technology conglomerate, filed its listing documents in Shanghai and Hong Kong on Tuesday, according to its filings on the two cities' exchanges.

The fintech giant will sell not less than 10 percent of its total capital post-issuance, split between Hong Kong and Shanghai's STAR Market, which was established last year to attract local high-tech firms.

Ant, with 33 percent owned by e-commerce guru Alibaba Group, announced a concurrent IPO plan last month and since then has kicked off a process for what's likely to be the largest fundraising in global finance.