Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Why does Charles Schwab have a Mandatory Settlement Period after selling stocks?
It's important to understand that, in general, security transactions involve you and a relatively unknown entity with your broker standing in the middle.  When you sell through Schwab, Schwab needs to receive the funds from the other side of the transaction.  If Schwab gave you access to the funds immediately, it would essentially be a loan until the transaction settles after funds and securities change hands.   If Schwab made funds available to you as soon as they were received, it might still be two days until the money is received; because the other side also has three days. Guaranteed one day settlement would have to include receipt of funds from the buyer in one day and Schwab can't control that. You need to remember this transaction likely includes at least one party in addition to you and Schwab.  Here's the SEC page related to the three day settlement period,  About Settling Trades in Three Days:  T+3