What is the method of accounting for securities where the transcation are recorded on the date the securities settle by delivery or receipt of the securities and the payment of cash known as?

The method of accounting for securities where transactions are recorded on the settlement date, which is when the securities are delivered or received and payment is made, is known as the "settlement date accounting." This approach contrasts with trade date accounting, where transactions are recorded on the date the trade is executed, regardless of when the actual transfer of securities and cash occurs. Settlement date accounting provides a clearer picture of actual cash flow and asset ownership at the time of reporting.