Structure of the Standardised Approach
Effective from Dec 28 2022 - Dec 27 2022
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| 6.4 | The standardised approach capital requirement is the simple sum of three components: the capital requirement under the sensitivities-based method, the default risk capital (DRC) requirement and the residual risk add-on (RRAO). | |||||
| (1) | The capital requirement under the sensitivities-based method must be calculated by aggregating three risk measures – delta, vega and curvature, as set out in [7]: | |||||
| (a) | Delta: a risk measure based on sensitivities of an instrument to regulatory delta risk factors. | |||||
| (b) | Vega: a risk measure based on sensitivities to regulatory vega risk factors. | |||||
| (c) | Curvature: a risk measure which captures the incremental risk not captured by the delta risk measure for price changes in an option. Curvature risk is based on two stress scenarios involving an upward shock and a downward shock to each regulatory risk factor. | |||||
| (d) | The above three risk measures specify risk weights to be applied to the regulatory risk factor sensitivities. To calculate the overall capital requirement, the risk-weighted sensitivities are aggregated using specified correlation parameters to recognise diversification benefits between risk factors. In order to address the risk that correlations may increase or decrease in periods of financial stress, a bank must calculate three sensitivities-based method capital requirement values, based on three different scenarios on the specified values for the correlation parameters as set out in [7.6] and [7.7]]. | |||||
| (2) | The DRC requirement captures the jump-to-default risk for instruments subject to credit risk as set out in [8.2]. It is calibrated based on the credit risk treatment in the banking book in order to reduce the potential discrepancy in capital requirements for similar risk exposures across the bank. Some hedging recognition is allowed for similar types of exposures (corporates, sovereigns, and local governments/municipalities). | |||||
| (3) | SAMA recognaize that not all market risks can be captured in the standardised approach, as this might necessitate an unduly complex regime. An RRAO is thus introduced to ensure sufficient coverage of market risks for instruments specified in [9.2]. The calculation method for the RRAO is set out in [9.8]. | |||||