While much of the media's attention has been squarely focused on Nvidia, longtime tech behemoth Microsoft (NASDAQ: MSFT) is an artificial intelligence (AI) force to be reckoned with as well. Aside from this direct investment,

Ken Griffin is arguably one of the most successful investors of all time. He made a name for himself when he shorted stocks just ahead of the 1987 market crash that came to be known as "Black Monday." His profits last year topped $7 billion as his returns of roughly 15% outpaced many of his peers.

Griffin is also the founder of market maker Citadel Securities. Citadel Securities sold a minority stake to Sequoia Capital in 2022. He said Sequoia brought insights on how to manage a rapidly growing business. “We would look for a partner like Sequoia,” he said about the possibility of ever selling a minority stake on the hedge fund side.

Citadel Advisors, run by billionaire investor Ken Griffin, is one of the most prestigious hedge funds on Wall Street, and while reviewing the 13F it filed on Nov. 14, I noticed something. In the third quarter, the fund increased its stake by 172% in a semiconductor stock that isn't Nvidia.