Unfiltered access is similar to giving your car keys to a friend who doesn’t have a license and letting him drive unaccompanied,” said SEC Chairman Mary L. Schapiro. “Today’s proposal would require that if a broker-dealer is going to loan his keys, he must not only remain in the car, but he must also see to it that the person driving observes the rules before the car is ever put into drive.”

Broker-dealers use a ‘special pass’ known as their market participant identifier (MPID) to electronically access an exchange or ATS and place an order for a customer. Broker-dealers are subject to the federal securities laws as well as the rules of the self-regulatory organizations that regulate their operation.

Continue reading SEC Proposes New Rule to Effectively Prohibit Unfiltered Access and Maintain Market Access Controls