Tracking what billionaire hedge fund managers are doing is a great way to get ideas for your portfolio. Most of the time, they have a proven track record, but you need to make sure they're buying stocks for reasons similar to yours. Otherwise, you may get stuck holding a stock with strong short-term movements but a poor long-term outlook.

Bridgewater Associates, run by Ray Dalio, is a massive hedge fund with nearly $175 billion in assets under management. In Q1, it bought many stocks, but among its biggest buys were companies related to artificial intelligence (AI). With AI being such a broad field, looking at what billionaires are buying is a great way to double-check yourself, and you might even find a new idea.

In Q1, Bridgewater Associates increased its positions in the following stocks:

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Source Fool.com