News Summary: Stock market rally pauses

TAKING PAUSE: A record-breaking run for the stock market took a pause Monday as investors assessed whether stock valuations were overstating the recent improvement in the economy.

FAILURE TO BOOST: Even a report that showed retail sales unexpectedly rose in April failed to give the markets a boost.

NOT SO YUM?: Yum Brands fell $1.44, or 2 percent, to $68.92 after the owner of Kentucky Fried Chicken reported that sales in China fell 29 percent last month, driven by concerns about Avian flu.