From India#39;s Byju#39;s to Brazil#39;s Nubank, here are top 15 unicorn startups worldwide According to the data collected by CB Insights, a private equity company, Chinese tech startup ByteDance is the most valuable unicorn in the world. As of October 2021, there are more than 800 unicorns around the world. A unicorn is a privately held startup company with the valuation of $1 billion or more. Multinational educational technology company BYJU’s is India’s most valuable unicorn startup and ranked among the top 15 unicorns in the world. Let’s take a look at the top 15 unicorns in the world