The burger chain Shake Shack told investors on Monday that it plans to expand aggressively in the years ahead. Its goal is to eventually operate 1,500 stores. Currently, it has just over 300. The move comes as the fast casual segment of the restaurant business is growing much quicker than other parts of the industry.

Shake Shack has raised its target for company-operated restaurants in America to “at least" 1,500 in the long-term, the company revealed.

The burger chain is targeting 1,500 company-owned units by enhancing leadership, boosting operations and entering new markets, executives said at ICR.