Yahoo Inc (YHOO)

Among the premarket stories for Thursday, Feb. 4, from AP Financial News:

- Shares of Visa jumped a day after the credit card company surprised Wall Street with surging first-quarter profits.

- Shares of Cisco Systems rose before the market opened Thursday after the maker of computer networking equipment provided a rosy sales forecast for the current quarter.

- Deutsche Bank analyst Jeetil Patel downgraded Monster Worldwide Inc. a day after the online jobs company posted a quarterly loss and purchased help-wanted site HotJobs from Yahoo Inc. for $225 million.

- A Rodman & Renshaw analyst upgraded shares of Arena Pharmaceuticals Inc., saying investors should not take short positions on the stock while regulators review its obesity drug candidate lorcaserin.

- A Merriman Curhan Ford analyst downgraded two companies in the LED, or light-emitting diode sector, citing short-term concerns over pricing and capacity.

- Double-Take Software was downgraded by an Oppenheimer analyst who wrote that recent signs of stabilization in the market the company serves have been misleading.

- Shares of NV Energy Inc. have tumbled to an attractive price, an analyst said as he upgraded his investment rating on the utility's stock.