Stress testing is a simulation and risk management technique used by financial institutions, regulators, and portfolio managers to evaluate how a portfolio, balance sheet, or financial system would perform under extreme but plausible adverse scenarios — such as a sharp market crash, a severe economic recession, a sudden interest rate spike, or a major credit crisis. Stress tests assess the resilience of an entity's capital, liquidity, and earnings under conditions significantly worse than the base case, identifying vulnerabilities before they materialise. In India, the Reserve Bank of India (RBI) conducts regular macro-prudential stress tests on banks to assess systemic risk and capital adequacy under stressed scenarios. SEBI also mandates stress testing for mutual funds, particularly on liquidity risk. For investors on Ventura Securities evaluating banks, NBFCs, and mutual funds, understanding stress test outcomes — disclosed in annual reports and RBI Financial Stability Reports — is a critical tool for assessing the true resilience of financial institutions beyond normal operating conditions.