Market Risk Exposure Assessment: Marsh & McLennan Companies, Inc.

This report synthesizes the quantitative and qualitative disclosures regarding market risk from the Company's 10-K filing for the period ending December 31, 2024. The assessment focuses on identifying exposure magnitude, changes over time, and mitigation strategies across key financial risks.

Interest Rate Sensitivity

Magnitude of Exposure:
The Company is exposed to interest rate fluctuations primarily through its cash investments and fiduciary cash investments. As of December 31, 2024, the total balances subject to variable rates were substantial ($2,398 million in cash and $11,276 million in fiduciary capacity).

Quantitative Impact & Trends:

• 2024 Sensitivity: A change in short-term interest rates of 10% or 41 basis points was estimated to increase or decrease annual interest income by approximately $56 million.
• Prior Period Change (2023): The sensitivity in 2023 was higher, with a similar rate change resulting in an approximate $66 million impact on interest income.
• Trend: The filing notes that the reduction in risk exposure (from $66M to $56M) is due to lower interest rates compared to the prior year.

Mitigation and Assessment:

• Strengths: Mitigation strategies are robust, including a Board-approved investment policy mandating principal preservation and liquidity. The majority of funds are invested in short-term bank deposits and liquid money market funds, which inherently limits duration risk. Diversification is maintained with counter-party limits assigned based on credit rating.
• Weaknesses: While the cash portfolio is well managed, interest rate changes also affect assumptions used to measure net periodic pension cost, introducing a secondary layer of sensitivity that requires external review (Note 8).

Foreign Currency Exposure

Magnitude of Exposure:
The Company has significant foreign currency exposure, with non-U.S. based revenue constituting approximately 52% of total revenue. The overall exposure spans roughly 80 foreign currencies, including major currencies such as the Euro, British Pound, Australian dollar, and Canadian dollar.

Quantitative Impact & Trends:

• 2024 Sensitivity: If major currencies moved 10% in the same direction against the U.S. dollar, net operating income was estimated to increase or decrease by approximately $93 million.
• Prior Period Change (2023): The corresponding impact in 2023 was lower, estimated at $80 million.

Mitigation and Assessment:

• Strengths: The Company benefits from a natural hedge: in most cases, both the foreign currency revenue and expense are denominated in the functional currency of the foreign location, which generally mitigates the impact on net operating income under normal circumstances. Furthermore, the Company actively uses forward contracts and options to limit exposure for specific transactions.
• Weaknesses: The filing acknowledges that external market factors or macroeconomic events can override this natural mitigation, leading to periods where the full impact of currency fluctuations is realized.

Equity Price Risk

Magnitude of Exposure:
The Company maintains a diverse investment portfolio subject to equity price risk. Total disclosed investments are substantial: $257 million accounted for using the equity method, plus approximately $19 million valued at readily determinable fair values and $16 million without such valuations.

Quantitative Impact & Trends:

• Risk Type: The primary risk is a decline in market value, which could result in realized impairment losses if deemed non-temporary.
• Trend/Change: No specific changes or trends in the portfolio's valuation were provided; the focus remains on periodic review of carrying values.

Mitigation and Assessment:

• Strengths: The Company employs a systematic process, periodically reviewing the carrying value of its investments to ensure appropriate valuation adjustments are made under applicable accounting pronouncements.
• Weaknesses: Given the significant size of the equity method investments ($257 million), any sustained decline in those underlying companies could lead to material and realized impairment losses that are not fully quantified in this disclosure.

Commodity Price Risk

Assessment:
The provided market risk disclosures do not contain any information regarding exposure to commodity price fluctuations, key commodities involved, or associated contract structures. Therefore, no assessment of this specific risk can be made based on the document.

Quantitative Measures and Stress Testing

Disclosures:

• Sensitivity Tables: Detailed sensitivity tables are provided for Interest Rate Risk (showing impact per basis point/percentage change) and Foreign Currency Risk (showing estimated net operating income changes under a 10% currency shift).
• Value-at-Risk (VaR): VaR metrics were not disclosed in this section.
• Stress Testing: No specific stress test results are provided; the analysis relies on scenario testing (e.g., "if rates increased by 41 basis points").

Assessment:
The Company provides clear, quantifiable sensitivity analyses for its two largest risks (Interest Rate and Foreign Currency), allowing stakeholders to understand the potential financial impact of defined market movements. However, the absence of VaR or comprehensive stress test results limits the depth of quantitative risk assessment available in this filing excerpt.