Tuesday Sector Laggards: Energy, Materials By: Market News Video September 30, 2014 at 14:35 PM EDT The worst performing sector as of midday Tuesday is the Energy sector, showing a 1.8% loss. Within that group, Newfield Exploration Co.. Read More >> Related Stocks: Allegheny Technologies Chesapeake Energy Energy Select Sector SPDR LyondellBasell Industries Newfield Exploration