What Was a Specialist Unit?

A specialized unit was a collection of persons or companies that acted as market makers for one or more equities that traded on a particular exchange. Over time, electronic mechanisms have essentially supplanted the job performed by individuals in this section. As a result, positions in such units are becoming increasingly uncommon across the world.
By serving as both a principal and an agent for brokers, a specialized unit kept the market in specific security steady. In order to facilitate liquidity for a specific deal, a specialist unit frequently kept its own inventory of goods as a primary.