Key Highlights

● The burrito chain was a standout S&P 500 gainer on October 29.

● Chipotle missed earnings-per-share estimates for the third quarter.

● Comparable sales rose for a third straight quarter.

● Investors will watch for a fourth quarter of comparable sales growth.

Chipotle Mexican Grill (NYSE:CMG) missed on profit, but investors focused on a number restaurant watchers follow closely, and the burrito chain's shares jumped on Thursday.

The miss that didn't matter

Chipotle Mexican Grill was one of the S&P 500's standout gainers on October 29, according to market data, in the first full Trading session after the company reported third-quarter results late on Wednesday. The rally began in after-hours trading on Wednesday evening and carried through Thursday's regular session.

On the surface, the report did not look like a recipe for a rally. Market commentary noted that Chipotle missed earnings-per-share estimates for the quarter. On its own, that might have been expected to weigh on the stock.

Comparable sales: the real headline

What changed the narrative was comparable-store sales. According to that commentary, Chipotle's comparable sales rose for a third straight quarter. Comparable sales measure growth at restaurants open for at least a year, stripping out the effect of new openings, and are widely watched as the cleanest gauge of whether customers are visiting more often or spending more per visit.

Three consecutive quarters of growth on that measure gave bulls something concrete to point to. Traders evidently decided that steady sales momentum outweighed a shortfall on the bottom line, which can be influenced by costs for ingredients, labor and new store openings.

A rotation toward consumer names

Chipotle's bounce came on a day that was rough for the biggest technology stocks but kind to much of the rest of the market. The S&P 500 slipped 23.59 points to 7,720.39 and the Nasdaq Composite slid 365.13 points to 26,184.72, as Alphabet (NASDAQ:GOOGL) suffered its worst day since its 2004 IPO following a Revenue miss and a quarter of negative free cash flow.

Consumer discretionary, Chipotle's sector, ended lower overall, weighed by Amazon (NASDAQ:AMZN) ahead of its own earnings. But individual consumer names caught a bid. Home Depot (NYSE:HD) and Nike (NYSE:NKE) both rose, and more than 400 S&P 500 members finished in positive territory. One analyst summed up the mood: "markets are no longer rewarding companies simply for investing heavily in AI."

The consumer under pressure, but spending

The economic data published Thursday morning painted the backdrop restaurant operators are navigating. Third-quarter GDP grew faster than forecast and accelerated from the second quarter, with consumer spending a key contributor. At the same time, September PCE Inflation ran hotter than in August, with energy and gasoline prices climbing sharply as a war-related oil squeeze hit the pump.

That combination, solid spending alongside rising prices, can cut both ways for a fast-casual chain. Customers keep coming, but food and wage costs can climb too, putting pressure on margins even when sales are healthy. In Chipotle's case, sales grew while Earnings fell short of expectations.

What to watch

The next milestones for Chipotle are whether comparable sales can extend their winning streak to a fourth quarter and whether the company can get back to beating profit estimates after this quarter's miss. Investors will watch commentary on menu pricing, ingredient costs and new restaurant openings for signs of how management is balancing growth and profitability. Results from other restaurant chains reporting in the coming weeks will offer a useful comparison.

The macro picture will matter too. The Federal Reserve held rates steady on Wednesday, and markets lean toward another hike in December. Friday's Employment Cost index will offer fresh evidence on wage growth, a key cost line for a labor-intensive restaurant business.