Shares of Smith Micro Software Inc. rose more than 4 percent to $15.25 before the bell on Monday after Jefferies, a brokerage, raised its rating on the stock to buy from hold.

Shares of Dobson Communications rose more than 5 percent in electronic trade to $10.64 following a Wall Street Journal report saying the company was considering alternatives that may include a sale.

Shares of Walgreen Co. rose more than 1 percent to $45.50 before the bell after the drugstore chain posted a quarterly profit that topped Wall Street's forecasts.