iShares Transportation Average ETF Experiences Big Outflow
August 16, 2013 at 10:54 AM EDT
Symbols mentioned in this story: IYT, KSU, FDX, ALK 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.