I need an advisor account where total capital from all sub-accounts are pooled together instead of segregated. Each sub-account gets a pro-rata share of the cash and securities held in the pool. Below is the problem I am having when capital from each sub-account is segregated. Say at the beginning of the first month I have 1 sub-account of $100,000. During the month, this sub-account becomes fully invested in the S&P. At the end of the first month, a second sub-account from another person is opened and adds another $100,000. During the second month, no trades were made and the S&P rises 5%. However, because the capital was segregated, sub-account1 was the only account that benefited. Sub-account1 increased 5% but sub-account2 stayed flat because no trades were made so it held all cash. The owner of sub-account2 is not happy. If the total capital from both sub-accounts were pooled, then both sub-accounts start out equal at the beginning of the 2nd month. At the end of the second month, both accounts are up 2.5%. The point is to have capital additions immediately pooled with existing capital so that the new capital have returns that mirror existing capital. Do any of the brokers do this with their advisor account? Thanks.