This probably goes directly to def: I know that all excess funds are swept into SIPC protected part of account at the end of the day. But how does it work intraday? If I had made just 1 quick futures trade in the morning, would it disable SIPC protection for the rest of the day? Thanks.
I believe that any money that is needed to meet margin requirements for the futures account would be moved to the commodity side. All the remaining money would be kept at the security side which would then get SIPC insurance coverage.