The Liquidity Provider Scheme for futures contracts on Portuguese shares was launched in 2004. It ensures that all Single Stock Futures and PSI20 Index Futures are supported by one or more liquidity providers providing continuous quotes and responding to Requests for Quotes (RFQs).

The scheme is aimed at providing transparency such as the investor is able to observe bids and offers and be able to trade at a reasonable bid/offer spread throughout the trading session.