The investment seeks daily investment results that correspond to three times the inverse (-3x) of the daily performance of the Barclays U.S. 20+ Year Treasury Bond Index.
The fund invests in derivatives that ProShare Advisors believes, in combination, should have similar daily return characteristics as three times the inverse (-3x) of the daily return of the index. The index includes all publicly issued, U.S. Treasury securities that have a remaining maturity greater than 20 years, are non-convertible, are denominated in U.S. dollars, are rated investment grade, are fixed rate, and have more than $250 million par outstanding. The fund is non-diversified.
Links:  http://www.globalfunddata.com/funds/new/performance/management?variant=ProShares
 http://www.globalfunddata.com/funds/new/performance/domicile?variant=United States
 http://www.globalfunddata.com/funds/new/performance/fund_administrator?variant=J. P. Morgan Chase Bank, N.A.
 http://www.globalfunddata.com/funds/new/performance/strategy?variant=Trading-Inverse Debt
 http://www.globalfunddata.com/funds/new/performance/structure?variant=Open Ended Investment Company
 http://www.globalfunddata.com/funds/new/performance/city?variant=Bethesda___United States
 http://www.globalfunddata.com/funds/new/performance/country?variant=United States
 http://www.globalfunddata.com/funds/new/performance/custodian?variant=J. P. Morgan Chase Bank, N.A.
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