Volatility in financial markets across geographies and asset classes is at record highs as the relentless spread of the coronavirus outbreak threatens to derail global economic growth, analysts at U.S. stock market index operator S&P Global said. The company, which runs Wall Street's Dow Jones (DJI) and S&P 500 (SPX) indexes, said the only comparison for the past month's sell-off on equity and other markets historically was the 2008 financial crash.