The Standard & Poor’s 500 Index trimmed its worst quarterly decline since 2011, as health-care shares rebounded from their est losing streak in four years.

The S&P 500 Index rose 0.1 percent to 1,884.03, at 4:03 in New York, and is down 4.5 percent in September, following August’s 6.3 percent retreat. The Nasdaq Composite Index lost 0.6 percent as Apple Inc. sank 3 percent.

Stocks have been volatile in recent weeks amid confusion over the Federal Reserve’s rate-tightening policy while concern lingers that an economic slowdown in Asia will curb demand for commodities and crimp global growth. The S&P 500 is poised for its worst quarter since 2011, down 9 percent. The benchmark is 12 percent below its all-time high set in May.

Source: Bloomberg