NYSE

Regal Entertainment Group, up 22 cents at $13.95

A Stifel Nicolaus analyst kept his "Buy" rating on the movie theater operator citing a rise in box office sales this year.

Duff & Phelps Corp., up $2.57 at $15.62

The investment banking firm said that it agreed to be acquired for $665.5 million in cash by a group of private equity companies.

Bank of America Corp., up 25 cents at $11.61

The bank's stock was the biggest gainer on the Dow Jones industrial average this year. Its shares more than doubled in 2012.

Herbalife Ltd., up $3.55 at $32.94

Shares of the nutritional supplements company continued to rise ahead of an analysts' day meeting to discuss its business model.

Hewlett-Packard Co., up 57 cents at $14.25

The computer maker was the biggest loser on the Dow Jones industrial average in 2013. Shares fell about 45 percent this year.

Nasdaq

Apple Inc., up $22.58 at $532.17

The iPhone and iPad maker saw its shares hit an all-time high of $705.07 in September. They have since fallen about 26 percent.

Cal-Maine Foods Inc., down $4.24 at $40.22

The egg producer said that its second-quarter profit dropped because of higher feed prices and costs related to a recent acquisition.

Smith & Wesson Holding Corp., up 26 cents at $8.44

Shares of the gun maker nearly doubled this year as demand for firearms rose in the U.S. Shares hit a high of $11.25 in December.