Kroger (NYSE: KR) stock has been pressured this year as the supermarket chain lost ground to major rivals such as Walmart (NYSE: WMT). Yet the retailer's rebound strategy started to show signs of success in the second quarter, which investors were hoping to see carried over into the second half of its fiscal year. On Thursday, Kroger did show more progress along that turnaround plan. But its operating trends still look weak compared to those of Walmart and other major national retailers. Image source: Getty Images. Sales gains Comparable-store sales sped up for the second consecutive quarter and again reached the highest point since Kroger started its rebound initiative over two years ago. The 2.9% comps boost was a welcome improvement over the prior quarter's 2.2% increase. Yet it wasn't enough to close the gap between Kroger and its consumer staples peers. Walmart boosted comps by over 3% this past quarter, and Target (NYSE: TGT) enjoyed a 4.5% increase. Executives were still happy to see progress in winning more customer traffic, and they highlighted successes such as growth in Kroger's popular in-store brand franchises. The chain has also expanded its pickup and home delivery offerings to its entire selling base. "Kroger's customer obsession and focus on operational excellence," CEO Rodney McMullen said in a press release, "continued to generate positive results in the third quarter." Capital returns Kroger took a significant charge related to its investment in Lucky's Market, but its financial position still improved with help from cost cuts and new profit streams. In fact, the stronger cash-flow profile has allowed management to lower its debt burden by $1.5 billion in just the past year. Investors saw a direct benefit from that cash surge when Kroger in late June raised its dividend 14%. The company announced another positive payoff in this past week's report by resuming its stock repurchase spending following a pause through the first half of 2019. "Kroger continues to generate strong and durable free cash flow," McMullen said, which is being used both to invest in the business and boost shareholder returns. Looking ahead Kroger affirmed all of its core growth and profit targets and still sees comps rising by about 2% this year and accelerating to at least 2.25% in 2020, even as operating margins improve. These predictions amount to several years of strengthening demand and financial trends that nevertheless pale in comparison to major retailing peers. Walmart and Target are each seeing some of their fastest growth in a decade, after all, and are crediting fast fulfillment offerings for pushing profitability higher than management could have hoped just a year ago. In contrast, Kroger shareholders have a trade-off to accept in seeing the retailer slowly improve its market position while promising more cash returns in the form of dividends and stock repurchases. The supermarket chain is building similar multichannel retailing assets to the ones that have helped Walmart and Target supercharge their growth outlooks. But so far, investors aren't seeing much of a positive impact from those moves, either in terms of sales gains or profitability. 10 stocks we like better than KrogerWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has quadrupled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Kroger wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of June 1, 2019 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.Source