Quantitative finance applies mathematical and statistical models to financial markets, focusing on pricing securities, measuring and managing risk, and identifying profitable trading opportunities. Quants build models for options pricing (Black-Scholes, local/stochastic volatility), portfolio optimization (Markowitz, factor models), risk measurement (VaR, stress testing), and algorithmic trading strategies. The field blends financial theory, advanced mathematics, and computational expertise. Quantitative finance offers the highest compensation in the financial industry, with base salaries of $150k–$250k+ and significant performance bonuses. Demand for experienced quants at hedge funds, investment banks, and prop trading firms far exceeds supply, especially for specialists in machine learning, exotic derivatives, and alternative asset classes. The intellectual challenge and market feedback create a uniquely meritocratic environment.