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Statements of Cash Flows (Unaudited)
3 Months Ended 9 Months Ended 12 Months Ended
Jul. 31, 2018
USD ($)
Jul. 31, 2017
USD ($)
Jul. 31, 2018
USD ($)
Jul. 31, 2017
USD ($)
Oct. 31, 2017
USD ($)
Cash flows from operating activities          
Cash received for accrued income     $ 757,793 $ 64,158  
Cash paid for Sponsor's fee     (507,432) (570,532)  
Net cash provided by/(used in) operating activities     250,361 (506,374)  
Cash flows from financing activities          
Cash received to purchase redeemable shares     30,790,050 29,746,940  
Cash paid to redeem redeemable shares     (42,333,462) (40,902,777)  
Cash paid for distributions     (255,400)    
Net cash used in financing activities     (11,798,812) (11,155,837)  
Adjustment to period cash flows due to currency movement     (1,563,786) 13,304,747  
(Decrease)/Increase in cash     (13,112,237) 1,642,536  
Cash at beginning of period     176,006,303 195,609,315 $ 195,609,315
Cash at end of period $ 162,894,066 $ 197,251,851 162,894,066 197,251,851 $ 176,006,303
Reconciliation of net income/(loss) to net cash provided activities          
Net Income/(Loss) $ 176,980 $ (142,342) 313,533 (475,234)  
Adjustments to reconcile net income/(loss) to net cash provided by/(used in) operating activities:          
Receivable from accrued interest     (121,322) (29,748)  
Prior period receivable from accrued interest     61,585    
Currency translation adjustment     1,054 (2,929)  
Accrued Sponsor's fee     55,683 66,831  
Prior period accrued Sponsor's fee     (60,172) (65,294)  
Net cash provided by/(used in) operating activities     $ 250,361 $ (506,374)