Abstract: An investment account is managed having associated assets, including shares of different securities, transacted in accordance with a plurality of different investment styles. A cash deposit into such a multi-style investment account and a request for a cash withdrawal from the multi-style investment account are handled differently but efficiently across the different investment styles in the investment account. When cash is deposited into the investment account, the cash deposit is placed into a temporary “cash bucket” in the investment account common across different investment styles. The cash is then distributed individual “cash buckets” each associated with an investment style in the investment account in accordance with a selected cash deposit allocation.

Abstract: A processor and system are provided for determining drift in an investment account having assets associated with a plurality of investment styles. An actual asset allocation of at least one portion of the investment account is determined. The at least one portion of the investment account includes both cash assets and security assets. The actual asset allocation of the at least one portion of the investment account is compared to an allocation rule. A drift of assets associated with the at least one portion is determined based on the comparison. A rebalancing of the investment account may occur based on the determined drift.

Abstract: A process and system are provided for determining whether to rebalance an investment account having assets associated with one of the plurality of investment styles relative to an allocation rule is determined. The determined drift is compared with a threshold value. A determination is made whether to rebalance the investment account is based on the comparison.