art_18__para_3__text_1
In order to calculate the proportion that trading-book business bears to total business for the purposes of points (a) and (c) of paragraph 2, the competent authorities may refer either to the size of the combined on- and off-balance-sheet business, to the profit and loss account or to the own funds of the institutions in question, or to a combination of those measures. When the size of on- and off-balance-sheet business is assessed, debt instruments shall be valued at their market prices or their principal values, equities at their market prices and derivatives according to the nominal or market values of the instruments underlying them. Long positions and short positions shall be summed regardless of their signs.
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Source: EUR-Lex (Cellar) · retrieved 2026-10-10 · Text as adopted (Official Journal); later amendments are not incorporated in this text.