MarketWatch Article Warns Investors The Brexit Related Rally Can Vanish As Easily As It Appeared

On Monday, investors reacted strongly to indications that Britain would remain a part of the European Union. Poll data showed growing support for the "stay" campaign and the Dow closed up 0.73 percent, the S&P 500 up .58 percent. But Marketwatch advised caution as the week continues and the actual Brexit vote draws near. With markets so susceptible to headlines, sentiment can be swung one way or the other very quickly. Market jitters are expected this week, with poll margin of error, and uncertainty surrounding undecided voters and voter turnout adding to unease regarding the sustainability of Monday's cheerful mood.