A partial ACATS transfer exists when the customer elects to transfer only a select group of assets from one broker to another rather than the entire account. As this type of transfer requires that the customer specify those assets to IB, the Account Management interface through which notification is provided precludes the entry of any security not eligible to be carried by IB. This effectively minimizes the need for an asset review and accommodates a transfer time frame ranging from 2 to 4 business days.