Golden Finance reports, sources reveal that SpaceX executives are initiating the process to select Wall Street banks to advise on its initial public offering (IPO). The sources said that the investment bank is scheduled to give an initial presentation next week, marking the most concrete step towards what could be a significant IPO for the rocket manufacturer. SpaceX informed employees last Friday that the company is preparing for a possible public offering next year. Earlier this month, The Wall Street Journal reported that SpaceX is also seeking a secondary stock sale, which would value the company at approximately $800 billion, more than double the $400 billion valuation this summer. (Jin10)