Elon Musk called a SpaceX bull case "interesting" after investor Brivael Le Pogam predicted a $30 trillion-$50 trillion valuation.

SpaceX's Wall Street debut is just hours away, and investors are betting that Elon Musk's aerospace empire could be worth more than $2 trillion once it starts trading publicly.

Nancy Tengler says SpaceX investors are betting on Elon Musk's vision, not near-term fundamentals. Here's why she compares the company to Amazon.