Notable ETF Outflow Detected - SDY, O, IBM, NNN
September 18, 2018 at 11:08 AM EDT
Symbols mentioned in this story: SDY, O, IBM, NNN 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..