CNA FINANCIAL CORP

The following table presents the estimated fair value and net unrealized gains (losses) of our fixed maturity securities by rating distribution.

As of December 31, 2023 and 2022, 1% of our fixed maturity portfolio was rated internally. AAA rated securities included $0.2 billion and $0.3 billion of prefunded municipal bonds as of December 31, 2023 and 2022.

The following table presents available-for-sale fixed maturity securities in a gross unrealized loss position by ratings distribution.

The following table presents the maturity profile for these available-for-sale fixed maturity securities. Securities not due to mature on a single date are allocated based on weighted average life.

Commercial Real Estate

Our investment portfolio has exposure to the commercial real estate sector primarily through our fixed maturity securities and mortgage loan portfolios. The performance of these assets is dependent on a number of factors, including the performance of the underlying collateral (which is influenced by cash flows from underlying property leases), changes in the fair value of collateral, refinancing risk, and the creditworthiness of tenants of credit tenant loan properties (where lease payments directly service the loan).

Within our fixed maturity securities portfolio, our exposure is primarily through our commercial mortgage-backed securities portfolio and our corporate and other bonds portfolio, which contains obligations of real estate investment trust (REIT) issuers. Commercial mortgage-backed securities include both single asset, single borrower collateral that is securitized independently and conduit collateral that is securitized in diversified pools.

The following tables present the estimated fair value and net unrealized gains (losses) of our commercial mortgage-backed securities by property type and by ratings distribution.

The following tables present the estimated fair value and net unrealized gains (losses) of the REIT issuer exposure within our corporate and other bonds portfolio by property type and by ratings distribution.

(1) Other includes a diversified mix of property type strategies including self-storage, healthcare and apartments.

Mortgage loans are commercial in nature and are carried at unpaid principal balance, net of unamortized fees and an allowance for expected credit losses. The allowance for expected credit losses is developed by assessing the credit quality of pools of mortgage loans in good standing using debt service coverage ratios (DSCR) and loan-to-value ratios (LTV). This assessment utilizes historical credit loss experience adjusted to reflect current conditions and reasonable and supportable forecasts. As of December 31, 2023 the allowance for expected credit losses on our mortgage portfolio was $35 million, or 3.3% of our amortized cost basis.

The following table presents the amortized cost basis of mortgage loans by property type.

In addition to our mortgage loan portfolio, we invest in securitized credit tenant loans and ground lease financings that are classified as fixed maturity securities and are largely investment grade quality. As of December 31, 2023, these holdings had an estimated fair value of $479 million and net unrealized losses of $87 million.

We own other fixed maturity securities which have exposure to cell towers, data centers and other collateral types that could be viewed as having real estate characteristics. We view these securities to have risks more akin to operating enterprises that do not share the same risks as the broader commercial real estate market.

We do not hold any direct investments in commercial real estate. Additionally, we do not have significant exposure through our limited partnership portfolio to funds whose primary strategy is real estate focused.