Assets transferred to IBKR via ACATS are subject to a withdrawal hold period of up to 30 days, the count of which begins the day after the transfer has settled and ends at midnight of the 30^th day thereafter. Note that assets are often credited to an account holder’s equity and made available for trade prior to transfer settlement. The date at which a given ACATS deposit is eligible for withdrawal may be determined through the Transaction History function within Client Portal.