2. For a non-regulated financial sector entity other than one referred to in paragraph 1, the notional own funds and the notional solvency requirements shall be calculated in accordance with the sectoral rules of the closest financial sector of the non-regulated financial sector entity. The determination of the closest financial sector shall be based on the range of activities of the relevant entity and the extent to which it carries out those activities. If it is not possible to clearly identify the closest financial sector, the sectoral rules of the most important sector in the financial conglomerate shall be used.