Among the companies with shares expected to actively trade in Wednesday's session are Tempur-Pedic International Inc. (TPX), Mattress Firm Holding Corp. (MFRM), and Chesapeake Energy Corp. (CHK). Tempur-Pedic International Inc. (TPX) forecast a disappointing second quarter as the mattress company reported its sales in North America are running below plan, leading the company to cut it guidance for the year. Shares were down 43% at $24.70 in premarket trading. Mattress Firm's fiscal first-quarter profit soared as the retailer posted stronger same-store sales. However, shares slumped 15% to $29.90 premarket as revenue missed analyst expectations. The combination of negative news from Mattress Firm and Tempur-Pedic weighed on shares of peer mattress company Select Comfort Corp. (SCSS), which fell 16% to $21.75 premarket. Chesapeake Energy Corp. (CHK) is in advanced talks to sell all of its interests in Chesapeake Midstream Partners LP (CHKM) and other pipeline assets to Global Infrastructure Partners, Bloomberg News reported on its website Wednesday, citing two people with knowledge of the matter. Separately, Argus Research upgraded its stock-investment rating on the company to hold from sell, citing the planned changes at the board level following Carl Icahn's investment. Mitcham Industries Inc.'s (MIND) fiscal first-quarter earnings rose 39% as the geophysical-equipment supplier saw equipment-leasing revenue continue to support stronger results. However, shares fell 10% premarket to $16.39 as the company missed earnings and revenue expectations and gross margin sank. MasterCard Inc.'s (MA) board has approved $1.5 billion in share repurchases, the credit-card company's latest move to boost shareholder value. MasterCard's stock climbed 1.9% to $415.94 in recent premarket trading. Iron Mountain Inc. (IRM) said its board approved its conversion into a real estate investment trust, saying the new corporate structure should help maximize company value and increase distributions to shareholders. Shares of the records-management and storage company jumped 13% to $32.20 premarket as the company also boosted its quarterly dividend by 8%. UnitedHealth Group Inc.'s (UNH) board raised the quarterly dividend 31% and authorized a new stock repurchase plan as the health insurer joins many other companies seeking to deliver a greater return to investors. Shares of UnitedHealth edged up 1.5% to $56.89 premarket. FuelCell Energy Inc.'s (FCEL) fiscal second-quarter loss narrowed as the power-equipment maker recorded stronger margins, though product sales fell. Shares plunged 11% to $1.10 premarket as results missed analyst expectations. Watchlist: Bob Evans Farms Inc.'s (BOBE) fiscal fourth-quarter earnings rose 20% as the restaurant-chain operator posted fewer charges and stronger operating margins. However, the company projected full-year earnings mostly below analyst estimates. Christopher & Banks Corp.'s (CBK) first-quarter loss widened as the women's apparel company's sales declined amid continued merchandising challenges. Cyberonics Inc.'s (CYBX) fiscal fourth-quarter earnings jumped 44% on continued strength from the medical-device maker's world-wide epilepsy sales. Guidewire Software Inc.'s (GWRE) fiscal third-quarter earnings fell 89% amid a year-earlier tax benefit, masking double-digit percentage revenue growth across the insurance-software maker's business segments. The company's adjusted earnings exceeded expectations of analysts, which had expected an adjusted loss. Merck & Co. (MRK) said the U.S. Food and Drug Administration rejected its new drug application for an investigational maintenance treatment for patients with metastatic soft tissue, or bone sarcoma. Netflix Inc. (NFLX) shareholders went against the online movie rental company's wishes by voting to declassify the company's board and to allow certain shareholders to call special meetings, according to a regulatory filing. Nordion Inc.'s (NDZ, NDN.T) swung to a fiscal second-quarter profit as special items weighed on the medical-science company's year-ago results, though revenue slipped across its main business segments. Results missed analyst expectations. Oxford Industries Inc.'s (OXM) fiscal first-quarter profit edged down 0.5% as higher costs masked higher revenue. The apparel company also raised its full-year adjusted earnings-per-share outlook. Ulta Salon Cosmetics & Fragrance Inc.'s (ULTA) fiscal first-quarter earnings jumped 50%, topping its already raised guidance, as the beauty-products retailer saw store expansions and same-store sales growth continue to drive improved results. -Write to Corrie Driebusch and Nathalie Tadena at corrie.driebusch@dowjones.com and nathalie.tadena@dowjones.com
