June 15 : SpaceX said on Monday that its underwriters had exercised the "greenshoe" option to purchase additional shares, increasing the total proceeds from its initial public offering to $85.7 billion from $75 billion that it raised last week. Elon Musk's rocket, AI and internet conglomerate, which sold 555.56 million shares at $135 apiece to raise the record $75 billion, became the largest IPO in history even before the greenshoe option was exercised. The 'greenshoe' is a standard feature of