What happened

Domino's Pizza (NYSE:DPZ) stock gained 19% last year to essentially match the rally in the broader stock market, according to data provided by S&P Global Market Intelligence.

^SPX Chart

^SPX data by YCharts.

The stock had been up by as much as 35% at one point in the year, but shareholders are still likely happy with the final 2017 result, considering rival Papa John's fell 34% during the year.

So what

Domino's put up better operating results than Papa John's or Yum! Brands and its Pizza Hut franchise. The pizza delivery leader's comparable-store sales growth was a market-beating 8.4% in the most recent quarter (and 9.5% in the prior quarter), compared to Pizza Hut's 3% boost and Papa John's 1% uptick.

A man and a woman biting into pizza slices.

Image source: Getty Images.

This gap isn't a short-term phenomenon, either. Thanks to its low-cost operating model and strong digital sales infrastructure, Domino's share of the pizza delivery business recently passed 27% -- up from 19% in 2007.

Now what

Whether Domino's extends its positive stock price momentum will depend on its ability to steal more market share in a competitive industry. That's why investors will be keeping close tabs on comps, which management expects to rise by between 3% and 6% annually in the domestic segment and in an international division that's showing signs of stress. Combine that established sales growth with the 6% to 8% store unit expansion that the chain predicts, and Domino's appears set for healthy sales and profit growth over the long term.

Demitrios Kalogeropoulos has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.