(43)UCITS should be expressly permitted, as part of their general investment policy or for hedging purposes in order to reach a set financial target or the risk profile indicated in the prospectus, to invest in financial derivative instruments. In order to ensure investor protection, it is necessary to limit the maximum potential exposure relating to derivative instruments so that it does not exceed the total net value of the UCITS’ portfolio. In order to ensure constant awareness of the risks and commitments arising from derivative transactions and to check compliance with investment limits, those risks and commitments should be measured and monitored on an ongoing basis. Finally, in order to ensure investor protection through disclosure, UCITS should describe their strategies, techniques and investment limits governing their derivative operations.