Nov high call volume doesnt necessarily mean that they are buying bac like crazy...no
That could well mean that your broker is dumping your options at dirt cheap prices, without you ever know it,and buying them back when they think the time is right. MM's are buying back options at cheap premiums, but that doesnt mean that they are bullish on bac. They sold covered calls back in Aug and Sep collecting huge premius, and they are closing their position now at way cheaper prices.
capish?