Many billionaires are active on Wall Street and largely built their wealth that way. So, paying attention to their moves and the stocks they invest in can teach us a lot. Of course, blindly following the lead of anyone -- billionaire or not -- isn't an advisable strategy when looking to grow wealth. It's essential to do some research of our own.

With that said, let's look at two dividend stocks that at least a couple of billionaires bought during the last quarter: (NYSE: PFE) and Merck (NYSE: MRK).

Pfizer hasn't performed well recently. Despite its important role in developing effective vaccines and medicines for COVID-19 -- efforts that were handsomely rewarded -- the company's shares have significantly lagged the market over the past couple of years.

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Source Fool.com