Dunkin Donuts (DNKN) - Get Report shares could get a boost Tuesday after analysts at Argus upgraded the stock to "buy" from "hold" with a $68 price target.

The price target represents a potential 15% upside from the stock's previous closing price. 

Analyst John Staszak believes the company has "strong opportunities to expand its brand both in the U.S. and internationally," a rare quality among the restaurant chains he covers. Staszak is also bullish on Dunkin's future free cash flow opportunities.

Dunkin shares are up more than 12% year to date and have risen nearly 30% over the past 12 months. 

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