Hi, I am new to spreading and I have some questions that are probably basic but here goes. 1. On the screenshot below May-June CL Calendar Spread while I was watching the price on the two separate contracts went from a spread of as much as -60cents to -45 cents but the dom for the spread only went from -54 to -53. 2. The depth of the individual contracts is light but the depth of the spread is heavy, I could capture the difference easier by legging in I think (if I get filled). Do exchange supported spreads trade on their own market? I am confused Thanks in advance.