Denison Mines Corp. (AMEX: DNN) climbed in price 7.42 percent to $3.33 early Wednesday afternoon. Volume was 4,929,037 shares, twice-and-a-half its normal daily volume.

Motorola Corp. (NYSE: MOT) proved quite the popular stock early Wednesday, trading in 33,997,244 shares, its normal share average around 25,960,500 for a full day. Shares in the electronics maker improved 5.55 percent to $8.09. Motorola said late Tuesday that it will split into two entities in January; Motorola Mobility Holdings, including the mobile phone and television set-top box operations, and Motorola Solutions, which will include other communications devices used in government and industry, like bar-code scanners and walkie-talkies.

Orexigen Therapeutics Inc. (NasdaqGM: OREX) fell in price 9.25 percent to $4.71. Volume of 1,798,407 shares nipped ahead the stock’s full-day average. The San Diego-based company brings its weight-loss drug Contrave to an FDA panel next week