Withdrawal restrictions applicable to assets transferred via ACATS?

Assets transferred to IB via ACATS are subject to a hold period of 10 business days, the count of which begins the day after the transfer has settled and ends at midnight of the 10th business 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 View Transaction History function within Account Management.