A company controlled by Alibaba Group Holding Ltd Chairman Jack Ma will pay 3.3 billion yuan ($535 million) to become the largest shareholder of financial software company Hundsun Technologies Inc.

Zhejiang Rongxin, 99.1 percent controlled by Ma, purchased all of Hundsun Technologies Group, which owns a 20.6 percent stake of the listed Hundsun Technologies Inc, according to a filing with the Shanghai Stock Exchange. Shares of Hangzhou-based Hundsun have been suspended since March 17.

Alibaba is investing in US and Chinese companies before an initial public offering in New York as early as this month. China's largest e-commerce company said on Wednesday it put money into a $250 million funding round for the ride-sharing application developer Lyft Inc, and last month it led a $280 million investment in TangoMe Inc, a messaging application.