Libertex on the Metric Retail Brokerage Actually Runs On. Ask most retail brokerages what a good quarter looks like and the answer arrives in funnel language. Retaining an existing client has always been cheaper than winning a new one; what has changed is how wide that gap has grown, and few sectors sit further along that curve than retail brokerage. The Libertex Group has operated since 1997, long enough to have run a brokerage through several cycles of the industry rediscovering the same lesson. It is that acquisition metrics measure a moment, and a brokerage is not a moment.