Scared of a recession? Watch these 5 signals to stay ahead of the game (M, CAT)

Stocks have surged over the last few weeks, but investors remain worried about a recession. December's market drop shocked holiday shoppers and manufacturing is weakening, but employers are still hiring and the economy continues to grow. While there are few signs a major economic downturn is close, traders will be looking for clues things are getting worse. Below are five indicators they'd be well-advised to watch. If you thought a 12% rally in the stock market meant investors are in a...