Software systems evolve in a more complex, distributed and injected manner at an ever-increasing rate which poses significant challenges to traditional software testing & defect prevention practices. As traditional testing techniques rely on manually created test cases, static rules and inflexible testing approach cannot keep up with dynamic nature of software environment.
High-frequency financial systems work within electronic markets that are very dynamic (prices, liquidity and opportunities to trade can change in milliseconds). Under these environments, traditional market indicators determined mainly by price and/or trading volume performance, may offer little to no information on the immediate dynamics of a given stock in real-time.
Volatility surfaces are key to understand and characterize how the implied volatility varies, relatively strictly given a single maturity date (hence giving birth to different strips), across strike prices. If you want to be serious about option pricing, hedging, risk management volatility trading and PF construction they must estimate them correctly.
Traditional portfolio risk models often rely on historical return distributions and relatively stable correlation assumptions, which may underestimate risk during severe systemic crises characterized by interconnected shocks, nonlinear asset responses, liquidity deterioration, and volatility clustering.
Financial markets are characterized by structural changes in returns, volatility, correlations, liquidity, and macroeconomic conditions, making static capital-allocation strategies increasingly vulnerable to changing market environments.