Liquidity provider — structure (organization) which connects traders wishing to make trades with each other, brokers, thereby ensuring the speed of the transaction and the execution of applications. The more perfect the structure is, the faster the desires of investors are satisfied and the greater liquidity the market has. High liquidity helps to reduce spreads and costs of trading for traders. One of the options, by which a reliable broker is selected. Liquidity providers can be specially designed structures, and financial institutions such as investment banks.