To sum up, 3 contracts are involved, 2 are cash settled.
On April 20, IB customers could trade either QM May 20 or WTI May 20.
Main specifications follow:
CL May20 physical delivery, last trading date APR 21 '20 14:30 EST, Nymex, multiplier 1000
QM May20 cash, last trading date APR 20 '20...