The Alternative Securities Market (known as MAB in Spanish) is a market dedicated to small capitalization companies seeking to expand, with a tailor-made regulation designed specifically for them and costs and processes adapted to their characteristics. The MAB is characterised by being a trading system operated by the Stock Exchanges, promoted by BME and supervised by the CNMV.

It provides financing, visibility, liquidity and valuation and offers a reporting and trading system tailored to the specific characteristics of this type of company. BME contributes its experience and technology in the design of this market and in operational procedures for trading, liquidity and information dissemination.