Stock futures move lower as hectic week of earnings comes to a close

Stock-index futures edged lower Friday as one of the busiest weeks of earnings season comes to a close with investors weighing blockbuster earnings from e-commerce giant Amazon.com Inc. while keeping an eye on weaker economic data out of China.

On Thursday, the S&P 500 SPX, +0.68% posted a record close, rising 0.7%, while the Dow DJIA, +0.71% advanced 239.98 points, or 0.7%, and the Nasdaq Composite COMP, +0.22% trailed behind, eking out a gain of 0.2%. Major benchmarks remained on track for solid monthly gains.