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

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

The artificial intelligence narrative has dominated Wall Street over the past two years, and for good reason. According to a report from Statista, the AI market is forecast to expand at a compounded annual growth rate of 27.

Palantir was a business worth more than Wells Fargo, one of the top banks in the entire country. It's also worth more than McDonald's, Walt Disney, and many more top blue-chip companies. Its valuation doesn't make sense, and if it was a speculative buy before this recent rally, it's even more of one now.