Oil Futures Rollover - URGENT

Hello Matt and David,

I was trying to understand what you were trying to explain here and I have a hard time with this. I read the other article also, so I would like to understand better.

  1. If I bought Oil21April as Matt said for 22$, and the current price for April contract is 18.1, when rollover happens I will lose 3.9$ or my new position will be at 25+3.9=28.9, since May contract has a price of 25$? Because you haven’t explained that part, it sounded more complicated than it should be. So I think Matt will lose 13,720 on the rollover, I think he didn’t understand that in the end. Only other than this, but the unlikely scenario, is to have my 22$ position transferred to a new May contract.
  2. Rollover can happen only on contract expiration, it can’t be triggered earlier?
  3. If my account is at margin call situation, what will happen?

Best regards,
Marko Milanovic