The DJIA average reaches 14296 on March 6, 2013, with a 7706 point rally since the 2008 financial crisis. Four blue chip stocks alone account for close to one third of the 7706 point rally- IBM, Caterpillar, 3M and Chevron. A 1% rise in IBM with a share price of $206 moves the DJIA average by 16 points because the DJIA is a price weighted average. The IBM contribution is about 1000 points to the 7706 point rally and Caterpillar about 500 points. Chevron and 3M each about 400 points. Boeing Caterpillar and Chevron were the largest contributors to the rally between 2003 and 2007. During the subsequent decline Boeing, Caterpillar and 3M were the biggest contributors. Bank of America contributed much less to the rally, but the DJIA took a big hit losing 388 points because of the debacle at Bank of America in 2008. The DJIA is a price weighted index so that the larger the price of a stock the larger its contribution. The S&P 500 Index by contrast is weighted by the capitalization of the companies in the index. IBM has the largest weighting in the DJIA of 11%....