Dear Community,

There are a handful of future contracts that expired on early-market close days. These contracts resulted in invalid symbol IDs, which we have corrected in the historical data and live trading environment. 

If you have any live future strategies using these root tickers, we recommend redeploying them to ensure you're not impacted. The complete list of root tickers can be seen below.

6L, A1R, A7E, A7Q, A8K, A9N, AA6, AA8, AC0, AD0, AE5, AKL, APS, ARE, AUP, AZ1, B0, BK, BTC, BZ, CL, CNH, CRB, CSX, CU, EN, EPN, ETH, EWG, EWN, EXR, GCU, GF, HCL, HE, HG, HH, HO, HP, HTT, LBR, M1B, MBT, MCL, MET, MNH, NG, PA, R5O, RB, SI, SIL, TN, UB, ZB, ZF, ZN, ZT

With early closes like Christmas Eve and New Year's Eve coming up, we wanted to ensure the community was in good standing for the weeks ahead.

Sincerely,

QC Team.