Market Midday: Stocks Mixed, IBM Weighs On Dow; JPMorgan Replaces J

I'm Jessica Edinger, CNBC. Mixed markets on Wall Street this afternoon. The Dow is down 124 points.IBM shares dragging it lower. They're down more than 24% this afternoon. The S&P 500 index up 14. The Nasdaq's up 187 points.Chipmaker shares are mixed this afternoon. Micron up 5%. Qualcomm down almost 3%.Companies whose shares hit fresh all-time highs Tuesday include oil names Marathon Petroleum, Philips 66, and Valero. Plus, some of the big banks including Bank of America, Morgan Stanley, Goldman Sachs, and ...