(Close): US markets closed little changed on Monday after falling oil prices and disturbing economic news from Europe dampened sentiment.
German business confidence fell again, and the European Banking Authority said 24 banks out of 123 had failed its "stress test" measuring their ability to withstand another financial crisis.
The S&P 500 lost 0.15% to 1,961.63.
Energy companies were the biggest downward drag on the indexes as oil briefly fell below $80 (£49) a barrel after Goldman Sachs slashed its forecasts for crude oil citing slowing demand and oversupply.
On the upside, shares of Gilead Sciences rose 1.7%, a day ahead of third quarter earnings on Tuesday.
And Micron Technology shares jumped 4 percent to $32.30 after it announced a $1bn stock repurchase.