1. How are the rollover dates of futures contracts in NT8 determined? Is there an algo for each commodity? Something like x days prior to last trade day?
2. Some rollover dates seem to be quite early. For example the date for ZW (Chicago Wheat) 03-20 is on 2019-11-19. But open interest on this date is only 175k. The OI peaks on 2020-01-21 at 224k. On rollover date of ZW 03-20 the next contract ZW 05-20 has an OI of only 51k. On 2020-01-21 it is at 85k and is still growing.
So why does NT roll ZW 03-20 so early?
Thanks.
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