RateGain Travel Technologies has raised ₹598.83 crore from 34 anchor investors, including the Government of Singapore, Monetary Authority of Singapore, Nomura, Goldman Sachs, BNP Paribas, HSBC, the company said. RateGain, a SaaS provider to the hospitality and travel industry, aims to raise ₹1,335 crore through IPO. The issue will open for subscription on December 7 and close on December 9.