USA TODAY | Relief rally stalls as oil prices head south, Dow falls more than 200 USA TODAY The market math equation that has doomed stock investors for most of 2016 is back in play on Wall Street: Falling oil prices plus tumbling energy and commodity shares equals a lower price for the Dow Jones industrial average. The Dow's relief rally of ... Europe trades lower as oil declines hit markets Stocks Slide as Oil Tumbles; Investors Seek Havens Stock futures extend losses as oil slump hurts energy sector |