Best Buy quarterly sales jump, but outlook weighs on shares

NEW YORK (AP) — Best Buy Co. saw the biggest quarterly sales growth at established stores in 15 years, helping push revenue and profit beyond Wall Street expectations.

Same-store sales, a key measure of a retailer's health, jumped 6 percent as shoppers bought products from home theater components to gaming devices to mobile phones. Consumers also took advantage of expanded services.

Best Buy has shown resilience in the face of increasing online competition, improving its stores to allow shoppers to test new technology, investing in price matching and offering speedier delivery options. And it's even joined with Amazon to let the company sell voice-controlled TVs at its stores.