PULL BACK: The stock market edged lower Monday as investors waited for economic reports that will give them more information about the state of the economy and, possibly, the outlook for the Federal Reserve's stimulus program. The government will release its first estimate of economic growth for the second quarter on Wednesday and its monthly jobs report on Friday.

PULL BACK: The stock market edged lower Monday as investors waited for economic reports that will give them more information about the state of the economy and, possibly, the outlook for the Federal Reserve's stimulus program. The government will release its first estimate of economic growth for the second quarter on Wednesday and its monthly jobs report on Friday.

MERGER MONDAY: A trio of big-name mergers made headlines but weren't enough to lift the market. Omnicom, a big advertiser, agreed to combine with France's Publicis to create the world's largest advertising company. Canadian retailer Hudson's Bay said it was buying Saks, and drugmaker Perrigo announced a deal to buy Ireland's Elan.

BLISTERING JULY: Despite Monday's drop, the Standard & Poor's 500 index remains on track to log its best month since January. The index is up 4.9 percent for the month, with only two trading days remaining.