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Combined Statements of Changes in Net Assets (Unaudited) (Parenthetical) - shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
SIT RISING RATE ETF |  |  |  |
Addition during the period | 0 | 500,000 | 0 | 775,000
Redemption during the period | 25,000 | 475,000 | 275,000 | 525,000
BREAKWAVE DRY BULK SHIPPING ETF |  |  |  |
Addition during the period | 75,000 | 0 | 75,000 | 0
Redemption during the period | 25,000 | 0 | 250,000 | 0

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