US data analytics startup Palantir valued at $20 bn files for IPO

US-based data analytics startup Palantir Technologies, co-founded by Peter Thiel, has filed an initial public offering. It's one of the largest public listings of a tech startup since Uber filed an IPO last year. Palantir, valued at $20 billion, has raised over $3 billion in funding and recently indicated that it is raising more capital in a $1 billion round.