Bedding stock volatility is keeping investors "up at night", Barron's reports

Sealy (ZZ) is fighting back on the memory-foam front, and not just with cheeky ads, Barron's says. It has created a special unit to make memory-foam products, and just rolled out a new product aimed at rival Tempur-Pedic (TPX), which makes the majority of memory-foam mattresses. Barron's contends that Tempur-Pedic's market-share growth could be coming to an end. The other big publicly traded player in the mattress business is Select Comfort (SCSS).