S&P briefly turn negative for the year as yuan tumbles

The Dow fell to a six-month low on Wednesday, while the Nasdaq and the S&P hit a one-month low in a broad decline. Nine of the 10 major S&P 500 sectors were lower. The financial index's 1.96 percent fall led the decliners on speculation that the yuan's devaluation might push the Fed to hold off until December to raise rates.