Stocks fell as investors shrugged off a spate of mergers and acquisitions activity to focus on the persistently weak labor market and a resurgence of European debt worries.
The Dow Jones Industrial Average fell more than 60 points, after a week that ended with the major indexes falling in the wake of a disappointing December jobs report.
DuPont AT&T and Microsoft led blue-chips lower, while GE rose.
So which individual stocks are worth watching today? Here are six that are on the move:
Union Pacific Corp
The railroad company was trading at all-time highs Monday morning. The shares were up about 1%.
Exxon Mobil Corp
The oil and gas company was downgraded to equal-weight from overweight at Barclays Capital.
Blue Nile Inc
The online jewelry retailer was upgraded to hold from sell at benchmark company. The firm increased the price target to $46 from $31 per share.
The home construction company was downgraded to underperform from neutral at credit suisse. The firm said they are downgrading on expectations of falling gross margins.
Warnaco Group Inc
The clothing company was upgraded to outperform from market perform at Wells Fargo.
The accessories and apparel company was initiated buy at Brean Murray, Carret with a $65 price target.
Get the latest stock picks on the CNBC Stock Blog, and see what analysts and others are watching before the bell each day at Analyst Watch.