Wal-Mart disappointed investors on many fronts Thursday when it missed earnings forecasts, posted its fourth consecutive U.S. same-store sales loss and offered fiscal 2015 guidance well below what analysts were expecting.
But despite myriad pressures that continue to inhibit the store's target low-income shopper, there was a bright spot amid all the gloom.
The discounter announced that it will accelerate the expansion of its small-format stores—an area which many analysts have called integral in the evolving shopping environment.
"This is a key area for Wal-Mart and one of the few potential areas for growth," said Ken Perkins, president of Retail Metrics.
On the company's earnings call, Wal-Mart U.S. President Bill Simon said the retailer now plans to open between 270 and 300 small-format stores this year—an increase from its earlier projection of 120 to 150. This would double its small-store count.
The openings will largely include its Neighborhood Market stores—which average about 38,000 square feet and sell groceries, household supplies and pharmaceuticals—as well as an expansion of its Walmart Express stores, which average about 15,000 square feet.
(Read more: Gap to raise minimum wage; Wal-Mart still 'neutral')
Analysts have said that growing a small-store footprint is crucial for the big-box retailer, as a shift toward e-commerce and high gas prices have caused it to lose sales to dollar stores and grocers in recent quarters.
Wal-Mart stores have typically targeted rural locations, where they can find the square footage to build out a supercenter that is nearly 200,000 square feet. But as consumers' budgets tighten, the retailer's traffic has struggled from shoppers who are less likely to make one large trip to a destination store, instead opting to make more frequent, lower-ticket and nearby trips during the week.
To this sentiment, the Neighborhood Market stores were a bright spot on Wal-Mart's disappointing earnings report. Comparable-store sales for the format grew 5 percent for the fourth quarter, excluding gas, compared with a same-store sales loss of 0.4 percent, excluding fuel, for the retailer's overall U.S. segment.
"Customers appreciate the broad assortment of our supercenters for their stock-up trips as well as our small store formats for fill-in trips," Simon said in a release. "By unlocking this growth opportunity and further combining our supercenters and small store formats with an unlimited selection available through e-commerce, we provide our customers with anytime, anywhere access to our brand."
Although Belus Capital Advisors analyst Brian Sozzi said small stores are a step in the right direction, he said it's "worrisome" that the retailer is still not addressing the problems in its larger-format locations. These issues include unproductive space and running out of stock in products such as fresh food.
Plus, with Wal-Mart's domestic fourth-quarter inventory growing 3.8 percent, its inventory is outpacing its comparable-store sales, Sozzi said.
After the retailer's lowered fourth-quarter forecast last month, Sozzi said he was hoping for Wal-Mart to announce about 100 store closings among its larger-format locations. Instead, the retailer announced plans to open 115 large stores this fiscal year.
(Read more: Time to close Wal-Mart stores? Analysts think so)
"That turning a blind eye is a recipe for long-term margin and returns pressure," he said.
Earlier this week, Credit Suisse issued a note suggesting that Wal-Mart acquire Family Dollar to jump-start its small-store effort. With more than 8,000 locations, the dollar store has a much larger presence in urban centers than Wal-Mart, including 50 locations in New York City and 82 in Chicago.
While Wal-Mart has tested small stores in the Chicago market, it has long struggled to gain a foothold in major cities. Despite a U.S. store count topping 4,200 units, the discounter has yet to break ground in New York City or Boston. And as it continues with its small-store expansion, this may be an aspect where Wal-Mart continues to slack.
Wal-Mart spokesperson Randy Hargrove told CNBC that it will expand its Express stores beyond its initial three markets (Arkansas, North Carolina and Chicago), but will continue its focus on its "core markets in rural and suburban locations."
In a call following its earnings report, Simon said that Wal-Mart always looks at opportunities to make acquisitions, but its small-store formats do between three to seven times the sales a typical dollar store would do, and maybe even more. Therefore, it's hard for the retailer to find an acquisition that fits its needs, Simon said.
David Birnbrey, chairman and CEO of The Shopping Center Group, said "there are a great deal of opportunities available to Wal-Mart for the smaller stores." He believes the retailer can accomplish its goal without an acquisition, saying in his 35 years in the business, "I've learned not to doubt Wal-Mart's ability to do anything."
Sozzi wrote that a material bump in the retailer's capital expenditures guidance for small stores put the idea of an acquisition to rest. He added the retailer protects its culture by promoting and growing from within, and typically goes against bringing outsiders into the mix.
"Moreover, a Family Dollar transaction would be an acknowledgment by Wal-Mart that its prior executives missed the small-store opportunity years ago," he said. "Wal-Mart is not one to acknowledge operating missteps."
—By CNBC's Krystina Gustafson. Follow her on Twitter @KrystinaGustafs.