Our Stock Market Is Broken

Mr. Zamost is a tech communications consultant and a former executive at Square.

Steven Spielberg has an alien movie opening this month, but that may not be the biggest science fiction blockbuster of the summer. That could be the SpaceX initial public offering.

As part of its pitch to sell shares on the stock market, Elon Musk’s aerospace and technology company says it will capture over $28 trillion of the A.I. market (nearly the size of the entire United States........

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