Article 390 › 3

The institutions that calculate the own funds requirements for their trading-book business in accordance with Part Three, Title IV, Chapter 2, Article 299 and Part Three, Title V and, as appropriate, with Part Three, Title IV, Chapter 5, shall calculate the exposures to individual clients which arise on the trading book by adding together the following items: (a) the positive excess of an institution's long positions over its short positions in all the financial instruments issued by the client in question, the net position in each of the different instruments being calculated according to the methods laid down in Part Three, Title IV, Chapter 2; (b) the net exposure, in the case of the underwriting of a debt or an equity instrument; (c) the exposures due to the transactions, agreements and contracts referred to in Articles 299 and 378 to 380 with the client in question, such exposures being calculated in the manner laid down in those Articles, for the calculation of exposure values. For the purposes of point (b), the net exposure is calculated by deducting those underwriting positions which are subscribed or sub-underwritten by third parties on the basis of a formal agreement reduced by the factors set out in Article 345. For the purposes of point (b), institutions shall set up systems to monitor and control their underwriting exposures between the time of the initial commitment and the next business day in the light of the nature of the risks incurred in the markets in question. For the purposes of point (c), Part Three, Title II, Chapter 3 shall be excluded from the reference in Article 299.

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Source: EUR-Lex CELLAR · retrieved 2026-09-04