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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Cash flows provided by operating activities    
Net (loss) income $ (24,459) $ 612,464
Adjustments to reconcile net (loss) income to net cash provided by operating activities:    
Net cash provided by operating activities 603,082 841,424
Cash flows used in financing activities    
Subscriptions 323,500 0
Redemptions (926,582) (841,424)
Net cash used in financing activities (603,082) (841,424)
Net change in cash and cash equivalents 0 0
Cash and cash equivalents, beginning of period 0 0
Cash and cash equivalents, end of period 0 0
Graham Alternative Investment Trading LLC [Member]    
Cash flows provided by operating activities    
Net (loss) income 24,459 (612,464)
Adjustments to reconcile net (loss) income to net cash provided by operating activities:    
Proceeds from sale of investments in Graham Alternative Investment Trading LLC 926,582 841,424
Investments in Graham Alternative Investment Trading LLC $ (323,500) $ 0