Hello, For example ES is at 1490. I sell call at 1490 for 13 and buy call at 1530 for 1.40. So it is a credit spread 40 points wide. Tell me please what will be my total loss in this spread? Do I need to multiply 50 x 40 points = $2000 loss? And breakeven point in this spread is approximately at 1500? Will the max margin required be equal to total loss? Are there any advantages trading ES options over SPX? Thank you.