Chevron Corp. (CVX) opened at 83.98. So far today, the stock has hit a low of 83.46 and a high of 85.46. CVX is now trading at 84.49, down 0.07 (-0.08%). The stock hit its 52 week high of 104.63 in May and set its 52 week low of 76.40 in January. CVX slipped during the second half of 2007, but has shown signs of strength this year. Chevron announced today its second-quarter profit rose 11% to $5.98 billion, despite losing money on the refining side of the business. The company came with earnings of $2.90 per share ... ...