A 5.7 percent drop to USD 140.64 in IBM also weighed on the market. The stock hit a five-year intraday low at USD 140.28 after it reported a bigger-than-expected decline in quarterly revenue and cut its full-year profit forecast.
The S&P healthcare sector fell 1.5 percent, while the Nasdaq Biotech Index .NBI dropped 3.2 percent.
Concerns about drug pricing have hit biotech and other healthcare shares.
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