OnTick() events to rapidly place and cancel limit orders; it might use colocated servers for speed. Schwab defines HFT as systems using complex code to buy/sell “much faster and at much greater scale than any human”. In Forex, HFT accounts for a large share of volume on major pairs (especially when liquidity is high), and it overlaps with latency-sensitive strategies. Our glossary entry notes HFT style as the extreme of algorithmic speed, often requiring custom hardware and very tight latency, unlike ordinary EA bots.
High-frequency trading (HFT)
High-frequency trading - An automated style involving extremely high order rates and very short holding times. HFT systems are specialized algorithms that execute trades at millisecond or even microsecond speed. HFT programs often combine strategies like arbitrage and market making, constantly quoting prices and rapidly adjusting to market changes. For example, an HFT cBot might use tick data and