Plus Markets, the junior stock exchange, is tackling the perennial problem of illiquidity in small cap stocks with an innovative plan to share revenue from its data sales with its marketmakers.

The move follows the end earlier this year of the battle between Plus and the London Stock Exchange over the rights of Plus to report trades in the shares of all the companies quoted on Aim, the LSE’s junior market. Plus began reporting trades in all Aim shares on August 21.