Shake Shack Inc. on Monday raised its revenue guidance for the year as revenue surged 75% in the quarter that ended in June.

Shares jumped 11% in recent after-hours trading as results beat expectations.

The company now expects full-year revenue of $171 million to $174 million, up from its previous range of $161 million to $165 million. Analysts had called for revenue of $171 million.

New York-based Shake Shack is among a wave of so-called fast casual chains across the restaurant industry that offer fresh, made-to-order items. It is one of a handful of upmarket burger chains that have weighed on results at much larger restaurants like McDonald's Corp.

Shake Shack went public in January, with shares more than doubling in their stock-market debut. They reached a high of $52.50, up from their initial public offering price of $21. In Monday after-hours trading, the stock traded at $78.04.

In the latest quarter, comparable-store sales grew 13%.

Overall, the company reported income of $1.1 million, or 8 cents a share, compared to $1.9 million, or 6 cents a share, a year earlier.

Revenue increased to $48.5 million from $27.7 million a year earlier.

Analysts had expected per-share earnings of 3 cents on revenue of $43 million.

During the quarter, Shake Shack opened three company-opened stores in the U.S., as well as one in the United Kingdom and its third in Moscow. It expects to open at least 12 new domestic company-opened restaurants annually.

Write to Angela Chen at angela.chen@wsj.com

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