Stress tests are conducted by using a set of quantitative techniques to assess the vulnerability of individual financial institutions as well as the financial systems to exceptional but plausible events. The exceptional but plausible events can be defined either against a specific historical scenario or against a hypothetical scenario based on the analysis of past volatility and correlations or by use of other methods. The impact of such events on the profitability and capital adequacy of a financial institution is estimated to assess its capacity to absorb potential losses. The ultimate objective of stress testing is to enable a bank or financial institution to adopt countermeasures that reduce either the probability or the impact of a plausible event to preserve its solvency.