2001 Spring Rd, Ste 400, Oak Brook, IL 60523-3930
Approximately 95-100% of the Portillo’s restaurant locations are linked in the Atlas Research Platform.
Public profile metrics.
Portillo's is an Oak Brook, Illinois fast casual restaurant company headquartered at 2001 Spring Rd. The business dates to 1963, when Dick Portillo invested $1,100 in a small trailer hot dog stand in Villa Park called The Dog House, using savings and a loan to serve Chicago-style hot dogs without running water. The stand grew into a Chicago restaurant chain serving Italian beef, char-grilled sausages and chocolate cake, and the company later moved into public markets, trading on the Nasdaq under the ticker PTLO. Portillo's operates its restaurants as a company-run brand rather than through franchising, which lets the chain keep control over its recipes, high-volume kitchens and themed dining rooms. From its Chicago-area base the brand has expanded well beyond the Midwest, building a growing presence across the Sun Belt in the South and Southwest along with a foothold on the West Coast. Restaurants are fast casual and serve lunch and dinner with Chicago-style hot dogs, Italian beef sandwiches, burgers, salads and shakes, with busy double drive-thru lanes at many sites. Typical units seat about 100 guests in roughly 3,000 square feet, reflecting high-throughput restaurants built for dine-in, carryout and drive-thru traffic.
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October Week 4 · Source file: October Week 3, 2026
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