Seoul stocks opened lower Friday, diverging from overnight gains on Wall Street as investors stayed cautious ahead of the Jackson Hall meeting, which is expected to provide clues about the Federal Reserve's rate policy. The Korea Composite Stock Price Index opened down 65.83 points, or 0.95 percent, at 6,846.54 as of 9:15 a.m. Major U.S. stock indexes closed higher overnight, with the S&P 500 gaining 0.72 percent and the tech-heavy Nasdaq rising 1.57 percent. The U.S. market was mainly led by [the source ends here].