Palantir's business growth has certainly been impressive, but most of the gains in the stock price have come from its expanding multiple. The stock now trades at a price-to-sales ratio of 100, which is extraordinary for any stock, especially one that's now one of the most valuable companies in the world.

Palantir Technologies (NASDAQ: PLTR) is probably the hottest stock on Wall Street. First things first, Palantir shares have been on an incredible ride. Indeed, one year ago, I argued that "Palantir is a great company and a solid investment,

Move aside Apple, Microsoft, Alphabet and Tesla. There's a new group of Magnificent Seven stocks in the S&P 500.

One of the country's largest pension funds has taken a stake in the artificial intelligence (AI) and data mining specialist.