Stocks ended sharply lower but off session lows Friday after disappointing earnings, ending a brutal and volatile week that saw the S&P 500 and Dow Jones Industrial Average turn lower for 2018. The S&P 500 SPX, +1.59% dropped 1.7% to close near 2,569, while the Dow DJIA, +1.33% suffered a decline of around 296 points, or 1.2%, to finish near 24,688, according to preliminary figures. That left the S&P 500 down 3.9% for the week and the Dow off 3%. For the year, the S&P 500 is off 0.6%, while the Dow is down 0.1%. The Nasdaq Composite COMP, +2.26% slumped 2.1% to end near 7,167, contributing to a 3.8% weekly fall. The tech-heavy index entered correction territory earlier this week. Disappointing results from Amazon.com AMZN, +2.49% and Google parent Alphabet Inc. GOOG, +1.16% GOOGL, +1.13% helped set the tone for Friday's session.