UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: February 7, 2007 1:30 P.M.
Form: S-1
CIK: 0001371571
Company Name: PowerShares DB US Dollar Index Trust
File Number: 333-136574
CIK: 0001383151
Company Name: PowerShares DB US Dollar Index Bullish Fund
File Number: 333-136574-05
CIK: 0001383149
Company Name: POWERSHARES DB US DOLLAR INDEX BEARISH FUND
File Number: 333-136574-04
CIK: 0001383150
Company Name: DB US DOLLAR INDEX BULLISH MASTER FUND
File Number: 333-136574-03
CIK: 0001383148
Company Name: DB US DOLLAR INDEX BEARISH MASTER FUND
File Number: 333-136574-02
CIK: 0001371531
Company Name: DB US Dollar Index Master Trust
File Number: 333-136574-01