Jan 28 : Elon Musk's SpaceX is weighing a mid-June initial public offering, aiming to raise as much as $50 billion at a valuation of roughly $1.5 trillion, the Financial Times said on Wednesday, citing people familiar with the matter.  Reuters could not immediately verify the report. SpaceX did not respond to a Reuters request for comment. The reported fundraising target doubles prior reports, positioning the rocket and satellite company's listing as the largest in history in terms of deal size,