Solvency II investment rule replacing quantitative limits with an obligation to invest only in assets whose risks the undertaking can identify, measure and manage.
Earlier regimes framed investment through lists and caps: so many percent in equities, so much in real estate, this category prohibited. Solvency II removed that approach for a simple reason: a numerical limit is circumvented by repackaging, and it does not stop you from buying a compliant asset you do not understand. The prudent person principle substitutes an obligation of competence and consistency. An undertaking may invest only in assets whose risks it can identify, measure, monitor, manage and report; the whole portfolio must ensure security, quality, liquidity and profitability; assets held against liabilities must match their nature and duration; and derivatives are admitted only insofar as they reduce risk or contribute to efficient portfolio management. The price is heavy and often underestimated: everything becomes permitted, but everything must be justified, documented and covered by a written policy, and buying into a new asset class calls for analytical capacity acquired before the investment, not after.
Article 132 of Directive 2009/138/EC. The growth of private credit on European insurers' balance sheets since 2020 illustrates exactly the tension in the principle: no quantitative limit prohibits these assets, but their infrequent valuation and uncertain liquidity oblige the undertaking to prove it can measure them. European supervisors have published several warnings on the point since 2024, not to ban the class, but to remind everyone where the burden of proof sits.
prudent person principle, personne prudente, règle de placement qualitative, article 132