For the purpose of this Regulation the following definitions shall apply:

(a) "valuation position" means a financial instrument or commodity or portfolio of financial instruments or commodities held in both trading and non-trading books, which are measured at fair value;

(b) "valuation input" means a market observable or non-observable parameter or matrix of parameters that influences the fair value of a valuation position;

(c) "valuation exposure" means the amount of a valuation position which is sensitive to the movement in a valuation input.