Stocks Slide Most Since ’09 as Two-Year Yield Reaches Record Low

A global rout in equities drove the Standard & Poor’s 500 Index to its worst slump since February 2009, while two-year Treasury yields plunged to a record low amid concern the economy is weakening. The yen pared losses, recovering from the biggest drop versus the dollar since 2008 that was triggered by Japan selling its currency.

The S&P 500 tumbled 4.8 percent to 1,200.07 at 4 p.m. in New York with futures on the gauge slipping 0.2 percent as of 6:17 p.m. The S&P 500 has dropped 11 percent since July 22, the biggest loss over the same amount of time since March 2009. The MSCI All-Country World Index slid 4.1 percent as Brazil’s stocks slumped to a two-year low and Switzerland’s entered a bear market. Two-year yields declined as low as 0.25 percent. The yen sank 4.1 percent against the dollar before trimming its loss almost in half. Oil sank 5.8 percent to help the Thomson Reuters/Jefferies CRB Index of materials erase its 2011 gain.