PowerShares S&P 500 High Beta Portfolio Experiences Big Outflow
April 23, 2014 at 11:14 AM EDT
Symbols mentioned in this story: SPHB 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..