SpaceX's $75B IPO has investors seeing stars

SpaceX has priced its blockbuster initial public offering at $135 a share, raising $75 billion and valuing Elon Musk's rocket biz at roughly $1.78 trillion. The haul could rise to about $86 billion if underwriters exercise their option to buy more stock, making it the largest IPO in US history. The company confirmed [PDF] that 555.6 million shares of Class A common stock were sold in the offering, with another 83.3 million available to underwriters. SpaceX is a loss-making company. In its Form S