ProShares ProShares UltraShort 20+ Year Treasury Experiences Big Outflow
October 30, 2018 at 10:45 AM EDT
Symbols mentioned in this story: TBT 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..