Note 1  Organization Invesco DB US Dollar Index Bearish Fund (the Fund), a separate series of Invesco DB US Dollar Index Trust (the Trust) was formed as a Delaware statutory trust on August 3, 2006. The term of the Fund is perpetual (unless terminated earlier in certain circumstances) as provided for in the Fifth Amended and Restated Declaration of Trust and Trust Agreement of the Trust, as amended (the Trust Agreement). The Fund has an unlimited number of shares authorized for issuance. Invesco Capital Management LLC (Invesco) has served as the managing owner (the Managing Owner), commodity pool operator and a commodity trading advisor of the Trust and the Fund since February 23, 2015. The Managing Owner holds 40 general shares (the General Shares) of the Fund. The fiscal year end of the Fund is December 31st. The Fund establishes short positions in certain futures contracts (the DX Contracts) with a view to tracking the changes, whether positive or negative, in the level of the Deutsche Bank Short USD Currency Portfolio IndexExcess Return TM (the Index) over time. The Index was renamed effective January 17, 2017. Prior to January 17, 2017, the Index was known as the Deutsche Bank Short US Dollar Index (USDX) Futures IndexExcess Return TM . The Index, as renamed, is identical to the Index prior to its name change on January 17, 2017. The performance of the Fund also is intended to reflect the excess, if any, of the sum of the Funds interest income from its holdings of United States Treasury Obligations (Treasury Income), dividends from its holdings in money market mutual funds (affiliated or otherwise) (Money Market Income) and dividends or distributions of capital gains from its holdings of T-Bill ETFs (as defined below) (T-Bill ETF Income) over the expenses of the Fund. The Fund may invest directly in United States Treasury Obligations. The Fund may also gain exposure to United States Treasury Obligations through investments in exchange-traded funds (ETFs) (affiliated or otherwise) that track indexes that measure the performance of United States Treasury Obligations with a maximum remaining maturity of up to 12 months (T-Bill ETFs). The Fund invests in United States Treasury Obligations, money market mutual funds and T-Bill ETFs (affiliated or otherwise), if any, for margin and/or cash management purposes. While the Funds performance reflects the appreciation and depreciation of those holdings, the Funds performance, whether positive or negative, is driven primarily by its strategy of trading DX Contracts with the aim of seeking to track the Index. The Index is calculated to reflect the changes in market value over time, whether positive or negative, of short positions in DX Contracts. DX Contracts are traded through the currency markets of ICE Futures U.S. (formerly known as the New York Board of Trade  ), under the symbol DX. The changes in market value over time, whether positive or negative, of the DX Contracts are related to the changes, whether positive or negative, in the level of the Index. The Index provides a general indication of the international value of the U.S. dollar relative to the six major world currencies (each an Index Currency, and collectively, the Index Currencies), which comprise the IndexEuro, Japanese Yen, British Pound, Canadian Dollar, Swedish Krona and Swiss Franc. The Fund offers common units of beneficial interest (the Shares) only to certain eligible financial institutions (the Authorized Participants) in one or more blocks of 200,000 Shares (Basket). The Fund commenced investment operations on February 15, 2007. The Fund commenced trading on the American Stock Exchange (which became the NYSE Alternext US LLC) on February 20, 2007 and, since November 25, 2008, has been listed on the NYSE Arca, Inc. (the NYSE Arca). This Quarterly Report (the Report) covers the three and six months ended June 30, 2019 and 2018. The accompanying unaudited financial statements were prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) for interim financial information and with the instructions for Form 10-Q and the rules and regulations of the U.S. Securities and Exchange Commission (the SEC). In the opinion of management, all material adjustments, consisting only of normal recurring adjustments, considered necessary for a fair statement of the interim period financial statements have been made. Interim period results are not necessarily indicative of results for a full-year period. These financial statements and the notes thereto should be read in conjunction with the Funds financial statements included in its Annual Report on Form 10-K for the year ended December 31, 2018 as filed with the SEC on February 28, 2019.