Here are 3 themes that drove another challenging week on Wall Street

There was no shortage of setbacks for stocks last week. Surprising economic data, another batch of earnings, and an intensifying conflict in the Middle East all combined to move the market, mostly downward. The S & P 500 closed out Friday with a weekly loss of 2% as the broad-market index flipped between the positive and negative sessions over the past five trading days. The Nasdaq fell 1.2% over the same period, while the Dow Jones Industrial Average dropped 3%. It was the second consecutive week of losses ...