MARKET PULSE-AMD, Cbeyond, Halliburton, Plug Power, Prosensa, Sarepta
April 21 (Reuters) - U.S. stocks opened flat on Monday as investors found few reasons to keep buying following a strong rally last week and ahead of a heavy week of corporate earnings. The Dow Jones industrial average was up 0.25 percent at 16,448.9, the S&P 500 was up 0.22 percent at 1,868.98 and the Nasdaq Composite was up 0.26 percent at 4,106.1.
** HALLIBURTON CO, $63.289, +3.92 pct
The world's No. 2 oilfield services company, reported better-than-expected quarterly results, helped by robust drilling activity in Russia, Saudi Arabia and Angola.
** HASBRO INC, $55.255, +1.18 pct
The toymaker reported a quarterly profit, compared with a year-ago loss, helped by strong demand for its toys for girls. Sales of girls' toys such as My Little Pony and Nerf Rebelle increased 21 percent to $138.7 million in the first quarter ended March 30.