Member Authorised Connection (MAC)

Membership to the London Stock Exchange is the ultimate way to gain direct trading access to the world's deepest pool of liquidity in UK equity, in addition to International Depository Receipts and other trading instruments. However, in some instances membership may not be suitable for a firm. Member Authorised Connection (MAC) is an alternative way for non member firms to gain direct trading access to the Exchange via an authorising member firm.

MAC enables a non-member firm (MAC customer) to connect directly to the Exchange’s centrally cleared order driven markets under an authorising member firm’s trading codes. As the connection is direct between the MAC customer and the Exchange, orders submitted to the market do not pass through the usual Order Management System (OMS) of the authorising member firm as is standard for other forms of order routing. 

Stock Exchange Notice
View the Stock Exchange Notice N43/08 about the Rules amendment to enable member firms to provide MAC. The new Rules will become effective from 5 January 2009 and from this date member firms will be able to submit applications to offer MAC to customers.

Features and benefits
An overview of the main features and benefits of the service 

How to become a MAC client
MAC is a service provided by London Stock Exchange member firms.  If you would like to become a MAC customer, please contact your broker. 

How to become an authorising member firm
Becoming an authorising member firm provides a great opportunity to expand your range of services to your clients.

Frequently Asked Questions

Downloads
MAC Service and Technical Description December 2008 (file pdf - 116 KB)
MAC for your clients fact sheet (file pdf - 199 KB)
MAC fact sheet (file pdf - 203 KB)