# High-frequency trading | | **High-frequency trading** (HFT) is a type of algorithmic trading in finance characterized by high speeds, high turnover rates, and high order-to-trade ratios that leverages high-frequency financial data and electronic trading tools. While there is no single definition of HFT, among its key attributes are highly sophisticated algorithms, co-location, and very short-term investment horizons in trading securities. HFT uses proprietary trading strategies carried out by computers to move in and out of positions in seconds or fractions of a second. | |-|-| | | wikipedia:: [High-frequency trading](https://en.wikipedia.org/wiki/High-frequency_trading) | E.g, in the book Flash Boys