"It is a new day at Uber," the company says. : Uber has come a long way since its days of "Boob-er" -- the infamous nickname co-founder and former CEO Travis Kalanick gave himself because his role at the company helped him score women. On Thursday, Uber publicly filed with the US Securities and Exchange Commission for what could be as much as a $120 billion initial public offering -- that would make it the largest US IPO in history. As a private company, Uber raised $14.9 billion giving it an estimated valuation of $76 billion.