Stock Market Midday, Oct. 7: Rising Treasury Yields Pressure Stocks, Caterpillar tumbles over 6%

As of 11:36 AM ET, the S&P 500 (SNPINDEX:^GSPC) is down 0.51% to 7,779, the Nasdaq Composite (NASDAQINDEX:^IXIC) has slipped 0.55% to 27,449, and the Dow Jones Industrial Average (DJINDICES:^DJI) is trading 0.98% lower to 51,018 as the indices pull back from records set on Tu