(4)To ensure that all the risks or elements of risks that an investment firm is exposed to or poses to others are duly covered, an investment firm should hold sufficient own funds, taking into account the business model, scale and complexity of activities performed by the investment firm, to withstand additional operational expenses related to an orderly wind-down process. In order to ensure that such own funds would be appropriate in particular economic circumstances, different plausible economic scenarios should be considered by competent authorities during the supervisory review and evaluation process carried out in accordance with Article 36 of Directive (EU) 2019/2034. In particular, business continuity, investor protection and market integrity are not to be jeopardised during the wind-down process. To that end, the investment firm should be capable, also during that process, of absorbing costs and losses not matched by a sufficient volume of profits. Given that the length of the wind-down process could differ significantly depending on specific circumstances, competent authorities should take this into account when setting the additional own funds requirement. Moreover, given the potentially diverse legal forms that investment firms can have, the competent authorities should take into account the applicable national insolvency, corporate and trade laws, which could affect the length of wind-down processes, as well as associated costs and risks.