Notable ETF Outflow Detected - XLE, XOM, SLB, COP
July 23, 2014 at 10:50 AM EDT
Symbols mentioned in this story: XLE, XOM, SLB, COP Exchange traded funds (ETFs) trade just like stocks, but instead of ''shares'' investors are actually buying and selling ''units''. These ''units'' can be traded back and forth just like stocks, but can also be created or destroyed to accommodate investor demand..