July 28 (Reuters) - U.S. stock indexes opened lower on Friday as Amazon's profit miss took a toll on technology shares.
The Dow Jones Industrial Average fell 9.29 points, or 0.04 percent, to 21,787.26.
The S&P 500 lost 5.78 points, or 0.23 percent, to 2,469.64.
The Nasdaq Composite dropped 40.28 points, or 0.63 percent, to 6,341.90. (Reporting by Tanya Agrawal; Editing by Anil D'Silva)