SpaceX delivered a historic stock market debut on Friday, with its shares jumping 19% on the first day of trading following the largest initial public offering (IPO) ever recorded.

Trading under the ticker symbol SPCX on the Nasdaq exchange, SpaceX shares opened at $150 and climbed as high as $176.52 during the session before closing at approximately $161 per share.

The strong investor demand valued the aerospace and technology company at around $2.1 trillion by the end of trading. The rally continued in after-hours trading, adding an estimated $100 billion more to the company’s market value.

SpaceX raised $75 billion through its IPO, making it the largest public offering in stock market history. The successful debut reflects significant investor confidence in the company’s businesses, which include space launches, satellite communications, and artificial intelligence initiatives.

Trading activity was exceptionally strong, with more than 500 million shares changing hands during the first day. The volume approached the record set by Facebook’s 2012 public debut, when roughly 580 million shares were traded.

The blockbuster listing further strengthens the position of founder Elon Musk, whose wealth is closely tied to SpaceX and other major technology ventures. Market analysts said investor enthusiasm was driven by the company’s dominant position in the commercial space industry and expectations for future growth.

The successful debut marks a major milestone for SpaceX as it transitions from a privately held company to one of the most valuable publicly traded corporations in the world. Investors will now be closely watching the company’s financial performance and future expansion plans as trading continues in the coming weeks.