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As you see in Bloomberg, the TAS(Traded at Settlement) contract for CME gold(for e.g. TASZ9 COMDTY) expires in 26/11/19. Whereas CME Gold(e.g. GCZ9 COMDTY) expires in 27/12/19. Why is this so?

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  • $\begingroup$ According to CME web site 27 Nov 2019 is First Position Date for GCZ9. On that day the process of delivery reporting begins and I believe CME will not accept TAS trades on this contract. So the last TAS trade you can make is on 26/11/2019, the day before the First Position Date. (So it is not the contract that expires early, but the capability to do TAS that goes away). That's my understanding, please check with CME if I have this correct. $\endgroup$ – Alex C Nov 27 '19 at 15:28

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