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📉 '''Market risk module''' is one of the principal building blocks of the [[Definition:Solvency capital requirement (SCR) | solvency capital requirement]] under [[Definition:Solvency II | Solvency II]], capturing the capital an insurer must hold against adverse movements in financial market variables — interest rates, equity prices, property values, credit spreads, currencies, and asset concentrations. Because insurers are among the largest institutional investors globally, and because mismatches between asset and liability sensitivities can threaten solvency, the market risk module often represents the single largest contributor to the SCR, particularly for [[Definition:Life insurance | life insurers]] and composite groups with significant investment portfolios. Analogous modules exist in other risk-based capital frameworks: the [[Definition:C-ROSS | C-ROSS]] regime in China, Singapore's RBC 2, and the [[Definition:Insurance Capital Standard (ICS) | Insurance Capital Standard]] being developed by the [[Definition:International Association of Insurance Supervisors (IAIS) | IAIS]] all include structured market risk charges, though calibrations and sub-module structures differ.

⚙️ Under the Solvency II [[Definition:Standard formula | standard formula]], the market risk module is decomposed into six sub-modules: [[Definition:Interest rate risk sub-module | interest rate risk]], [[Definition:Equity risk sub-module | equity risk]], [[Definition:Property risk sub-module | property risk]], [[Definition:Spread risk sub-module | spread risk]], [[Definition:Currency risk sub-module | currency risk]], and [[Definition:Concentration risk sub-module | concentration risk]]. Each sub-module applies a prescribed stress — for example, an instantaneous equity decline of 39 percent plus a symmetric adjustment for long-listed equities, or specified upward and downward shifts to the [[Definition:Risk-free rate | risk-free yield curve]] for interest rate risk — and measures the impact on the insurer's [[Definition:Own funds | net asset value]]. The sub-module results are then aggregated using a [[Definition:Correlation matrix | correlation matrix]] that reflects diversification benefits among the market risk drivers. Critically, the stresses apply on a [[Definition:Look-through approach | look-through basis]], meaning insurers must identify the underlying assets within collective investment vehicles and apply the appropriate sub-module stress to each constituent holding.

🌍 The market risk module's design has profound implications for insurer investment strategy and [[Definition:Asset-liability management (ALM) | asset-liability management]]. High capital charges for equities and property under the standard formula have, in practice, encouraged many European insurers to tilt portfolios toward fixed income, sometimes at the expense of long-term returns — a dynamic that has attracted criticism from policymakers seeking to channel insurance capital into infrastructure and growth assets. Solvency II's [[Definition:Long-term equity investment | long-term equity]] treatment and the [[Definition:Infrastructure investment | qualifying infrastructure]] concessions represent regulatory responses to this concern. Insurers using [[Definition:Internal model | internal models]] can tailor their market risk calibration to their specific portfolio and hedging strategy, often achieving more favorable capital treatment for well-managed exposures. For [[Definition:Risk management | risk management]] functions, the market risk module is a daily concern — not just at reporting dates — because real-time monitoring of market sensitivities and hedging effectiveness is essential to avoiding unexpected capital deterioration.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Solvency capital requirement (SCR)]]
* [[Definition:Interest rate risk sub-module]]
* [[Definition:Spread risk sub-module]]
* [[Definition:Equity risk sub-module]]
* [[Definition:Look-through approach]]
* [[Definition:Asset-liability management (ALM)]]
{{Div col end}}

Definition:Market risk module - Revision history

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