New store openings continue to push Bed Bath & Beyond sales higher, but profit margins lag as it's forced to be overly promotional to attract customers to them.

The retail landscape for home goods is evolving, but it's the same forces that drove Linens 'n' Things from the market that are now pressuring Bed Bath & Beyond (NASDAQ:BBBY). Though it still dominates the niche, the retailer's recent 2015 fiscal third-quarter earnings suggest that its efforts to combat the challenges are pressuring its profitability. Meanwhile, its determinedness to maintain its current course could mean there's little hope it will recover anytime soon.

The home goods retailer's net sales increased by 0.7% from the year-ago period, ending at $2.95 billion on a constant-currency basis; its same-store sales were essentially flat. Although sales through its digital channels increased by more than 25%, traffic into its stores was disappointing. Bed Bath & Beyond nevertheless said that it's on track to open 29 new stores across the fiscal year, with 12 locations in the third quarter alone.

Many of the retailer's rivals are closing stores to align their operations with market conditions. Macy's said recently that it is closing hundreds of stores and laying off thousands of employees as it struggles to attract customers in this uncertain economic period. Similarly J.C. Penney, which is doing demonstrably better than its peers, just announced that it will close seven stores, and Wal-Mart declared its plans to close 269 locations, more than half of which are in the U.S.

Bed Bath & Beyond may be steadfast in its determination to plow ahead, but it's not the market share land grab it appears.

The home goods retailer is relying on constant promotions to get customers into its stores. Its sales and couponing practices are pressuring its already-slim operating margins, which have fallen over the past three years. In effect, its running harder and faster merely to stay in place.

Despite this, Bed Bath & Beyond's financial strength remains fairly solid, and it's still producing strong free cash flow. But because it self-funds the construction of new stores out of those cash flows, it's important they provide a good return quickly. Declining traffic, weak sales, and falling profitability upsets that delicate balance.

Now it's forecasting comps for the fourth quarter to be anywhere from flat to 2% higher, but whatever growth it achieves will be from its digital sales channel and not from its physical locations. That can only mean it will be hard-pressed to reverse its long decline, and though its stock trades 40% lower today than it did a year ago, investors could see Bed Bath & Beyond drop lower still.

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