https://www.cmegroup.com/apps/cmegr...ue=1&monthYear=M0&year=2020&exchangeCode=XNYM At the top where the Ticker is type in the ticker you want to spread so it looks like this. CLM2020-CLN2020 then hit enter.
What do you mean? Do you want the spread to be positive? The example I have provided is negative. Turn it around if you want it positive.
I just see the outright CLM2020. I try to add a leg using the operand "-" with another contract. It does not work.
It worked for me, I got a negative number and chart. Go into cmegroup.com click on the contract you are interested in and then the chart icon.