CA-4.3.1

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The capital requirements for general market risk are designed to capture the risk of loss arising from changes in market interest rates, i.e. the risk of parallel and non-parallel shifts in the yield curve. A choice between two principal methods of measuring the general market risk is permitted, a "maturity" method and a "duration" method. In each method, the capital charge is the sum of the following four components:

(a) the net short or long position in the whole trading book;

(b) a small proportion of the matched positions in each time-band (the "vertical disallowance");

(c) a larger proportion of the matched positions across different time-bands (the "horizontal disallowance"); and

(d) a net charge for positions in options, where appropriate (see chapter CA-8).