The two biggest stocks on the market have grown even bigger so far this year. Apple (NASDAQ: AAPL) shares have soared close to 40%, while (NASDAQ: MSFT) stock is up around 23%.

Investors' excitement about artificial intelligence (AI) has helped boost many tech stocks. However, you can find big winners outside of tech, too. This stock-split stock is beating both Apple and Microsoft -- with no AI tailwind at all.

Sometimes, stock splits serve as key catalysts for stocks. That wasn't the case for Novo Nordisk (NYSE: NVO), though.

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Source Fool.com