U.S. stocks rallied, after the Standard & Poor’s 500 Index posted one of its steepest drops this year, amid a respite from a global equities selloff.

A surge in the final minutes pushed the S&P 500 up 1.8 percent to 1,948.87 at 4 p.m. in New York, closing at the session high after the gauge fell 3.8 percent over the previous two sessions. Equities jumped in early trading and then trimmed their gains by more than half before an afternoon rebound along with oil prices.

The benchmark equity gauge’s 3 percent decline on Tuesday — its third-biggest of 2015 — marked a sour start to what has historically been the worst month of the year. The S&P 500 falls 1.1 percent on average in September, according to data compiled by Bloomberg going back to 1927.

Another troubling sign is that futures on Chicago Board Options Exchange Volatility Index have climbed, showing traders predict turbulent markets will endure. The gauge known as the VIX fell 11 percent Wednesday to 27.93, after a record monthly jump in August,up 135 percent.

The S&P 500 slumped 6.3 percent last month as China’s currency devaluation spurred concern over global growth, erasing more than $5.7 trillion in equity market values worldwide, while volatility surged the most on record. The equity index entered a correction last week, only to then rally more than 6 percent over two days. It closed Wednesday 9.1 percent below its all-time high set in May.

Source: Bloomberg