Williams Partners (WPZ -0.6%) is downgraded to Hold from Buy and removed from the Select List at...

|About: Williams Partners L.P. (WPZ)|By:, SA News Editor

Williams Partners (WPZ -0.6%) is downgraded to Hold from Buy and removed from the Select List at Stifel Nicolaus after yesterday's explosion at the Louisiana olefins plant. The firm expects a significant financial impact, especially in the short term as ethylene margins had been relatively strong. Stifel is waiting before revising its estimates but is confident results will be below expectations.