HFT & Low-Latency Trading

High-frequency trading (HFT) is the practice of exploiting microsecond-scale price discrepancies between markets or instruments. Traders use custom silicon, colocation, and ultra-optimized code to execute thousands of trades per second. Advanced practitioners blend systems engineering (kernel optimization, FPGA programming), market microstructure (understanding order flow), and quantitative trading (building statistical models). They work for proprietary trading firms (Renaissance, Citadel, Jump Trading) or build systems for them.