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What if the digital currency's perpetual contract futures were not traded until 2019 and there was no data before then, and the back-testing data was not enough?

Author: fxhover, Created: 2021-07-09 17:41:37, Updated: 2021-07-09 17:45:49

fmz retest supported exchange, digital currency perpetual contract futures only listed as early as 2019, previously there was no data, the time to retest is probably more than 2 years, retest data is not enough, retest time is short, may affect the effectiveness of retest, what to do?

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