I see there are quite a few people here that are experts in options so hopefully I can get answer here. I only trade vertical spreads that don't require margin. My understanding was that with a covered debit spread your maximum loss is the debit you paid. Lately I received a margin call because a a debit spread. What happened was because of the extreme market volatility the bid and ask spread became wide, and for a short time the $65 call that I owned was pricing lower then the $75 call I was short (the stock itself was by $28). The question is, does that sound right since all the position where covered?