Chipotle Mexican Grill's assembly-line business model of slinging burritos and carnitas had a banner day on Wall Street. As the much of the market saw increased volatility Friday, Chipotle saw record highs, boosted by much better-than-expected earnings.
Much of the company's solid growth came from its ability to quickly serve long lines of hungry customers during peak rush hours, a concept known as throughput, said Stephen Anderson, a restaurant analyst with Miller Tabak & Co. The efficiency at which customers move through Chipotle lines during busy hours seems to be increasing, he said.
"Chipotle has been doing very well on execution," Anderson said on "Squawk on the Street."
(Read more: Chipotle eyes price hike after strong quarter)
Chipotle reported a 30 percent increase in earnings Thursday, setting up its share price for a more than 13 percent jump on Friday. Chipotle also reported fast-growing same-store restaurant sales, with traffic increasing 9.3 percent in the fourth quarter.