The global financial crisis of 2007-2009 exposed the inadequacy of the minimum capital charges under the market risk amendment in addressing the underlying trading-book risks. In response to this, the Basel Committee introduced several changes, one of which was the inclusion of a stressed VaR component in the VaR computations. This change was aimed at ensuring that the VaR calculations took into account extreme market conditions, thereby providing a more accurate measure of the potential losses that could be incurred in such scenarios. This change was part of a broader set of reforms known as Basel 2.5, which were designed to strengthen the resilience of the banking sector and reduce the likelihood of future financial crises.

Choice B is incorrect. Operational risk, while important, was not the primary focus of Basel 2.5 amendments. The changes were primarily aimed at addressing trading book risks and did not mandate additional operational risk coverage on top of credit and market risk.

Choice C is incorrect. While modernizing credit risk measures and aligning them with banks’ internal measures is a crucial aspect of overall risk management, it was not a specific change implemented under Basel 2.5 to address trading book risks.

Choice D is incorrect. The classification of Tier 1 and Tier 2 capital for preservation of maintenance or recapitalization purposes does not directly relate to the changes made in Basel 2.5 for addressing trading book risks.

Things to Remember

• Basel Accords: The Basel Accords are a set of international banking regulations developed by the Basel Committee on Banking Supervision to ensure financial institutions maintain adequate capital reserves to cover risks.
• Market Risk: Market risk is the risk of losses in on and off-balance sheet positions arising from adverse movements in market prices.
• Value at Risk (VaR): VaR is a statistical measure used to quantify the level of financial risk within a firm or portfolio over a specific time frame.
• Operational Risk: Operational risk is the risk of loss resulting from inadequate or failed internal processes, people, and systems, or from external events.
• Tier 1 and Tier 2 Capital: Tier 1 capital is the core measure of a bank's financial strength, while Tier 2 capital is supplementary capital that includes items such as undisclosed reserves, revaluation reserves, and hybrid instruments.