In other words, there needs to be a backup system, separate from the broker dealer, that knows who owns every single share of stock.

The interface - The place where broker dealers and market makers gain access to the system.

These companies are called broker dealers, and they give you access to the stock exchanges.

Here are some of the things that broker dealers do:

This is part of the regulatory nature of broker dealers.

Like a bank, the broker dealer knows how much money every account has.

Now, the exchange sends a message back to the broker dealer saying the trade is complete.

So, as the only entry points to the stock markets, broker dealers play a critical role in the process.

The company's portal is based upon a "membership base of broker dealers".

He has already been barred from working in the securities industry as a broker dealer.