U.S. stocks are drifting at the start of a week with many potential flashpoints for markets including earnings reports and economic data. The S&P 500 was up 0.3% in early trading Monday. The Dow Jones Industrial Average was up 207 points,

It's been an erratic year for the stock market. Through everything that's happened so far, the broader benchmark S&P 500 is down about 6%, although much more from highs the market reached in mid-February.

For a while, the theory that Donald Trump would avoid doing anything that tanked the stock market—named the “Trump put” after an options contract that can protect traders from downside losses—seemed to have failed catastrophically.