The S&P 500 rebalances four times a year, admitting stocks that are powering today's economy -- and in recent reshuffles two potential artificial intelligence (AI) winners found a spot in the index. Super Micro Computer ( SMCI 4.28%) joined the benchmark earlier this year, while Palantir Technologies ( PLTR 4.05%) entered this fall.

Top investors can become legends, and few have achieved such status like Izzy Englander, the mastermind behind Millennium Management, a hedge

Earlier this year, Super Micro Computer, Inc. (SMCI) was on top of the world. The company’s server solutions were in high demand, thanks to the artificial intelligence boom. Investors were hungry for stocks that were riding the wave,