Jan. 27 (Bloomberg) -- U.S. stocks fluctuated following the worst week since 2012 for benchmark indexes as Caterpillar Inc. led industrial shares higher after better-than-estimated results while technology and shares led declines.

Caterpillar jumped 6 percent after announcing a stock buyback and forecasting earnings above analysts’ estimates amid growth in demand for construction equipment. AT&T Inc. gained 0.3 percent after telling the U.K. takeover panel that it doesn’t plan to make an offer for Vodafone Group Plc. Apple Inc. increased 1.5 percent before reporting its results. Cisco Systems Inc. dropped 0.9 percent after an analyst downgrade.

The Standard & Poor’s 500 Index was little changed at 1,790.19 at 10:17 a.m. in New York after tumbling 2.6 percent last week. The Dow Jones Industrial Average climbed 16.95 points, or 0.1 percent, to 15,896.06. Trading in S&P 500 stocks was 11 percent above the 30-day average during this time of the day.