Stocks that split tend to beat the S 500 (SNPINDEX: ^GSPC), according to research from Bank of America. Since 1980, the average company has seen its share price increase 25.4% during the 12 months following a stock split announcement, while the S 500 has returned an average of 11.9% during the same period.

Nvidia is the most recent company to follow that pattern. Since announcing a 10-for-1 stock split on May 22, its share price has surged 43%, while the S 500 has returned just 3%. Nvidia's success is due to its market leadership in artificial intelligence (AI) chips and its expanding influence in other areas of the AI economy.

Super Micro Computer (NASDAQ: SMCI) and (NASDAQ: MSFT) also play important roles in the AI economy, and they could be the next companies to announce stock splits. Here's what investors should know.

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Source Fool.com