Company: CMA
Filing Date: 2025-02-24
Form Type: 10-K
Source: 0000028412-25-000108
Chunk: 289

Company: COMERICA INC
Filing Date: 2025-02-24
Form: 10-K
Item: Item 1
Chunk 289
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20)%Residential mortgage-backed securities (a)9,076 10,519 (1,443)(14)Commercial mortgage-backed securities (a)4,692 4,745 (53)(1)Total investment securities$15,045 $16,869 $(1,824)(11)%

(a)Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.

On a period-end basis, investment securities were $15.0 billion at December 31, 2024, a decrease of $1.8 billion from $16.9 billion at December 31, 2023, due to paydowns of mortgage-backed securities, maturities of Treasury securities and an increase in unrealized losses, from $2.7 billion at December 31, 2023 to $2.9 billion at December 31, 2024. At December 31, 2024, the effective duration of the Corporation's securities portfolio was approximately 5.8 years. On an average basis, investment securities decreased $1.6 billion to $15.8 billion in 2024, compared to $17.4 billion in 2023, reflecting paydowns of mortgage-backed securities and maturities of Treasury securities, partially offset by a decline in average unrealized losses.

F-14

(weighted average yield) (a)U.S. Treasury securitiesResidential mortgage-backed securities (b)Commercial mortgage-backed securities (b)Total investment securitiesDecember 31, 2024Maturity (c)Within 1 year 3.87 %2.60 %— %3.85 %1-5 Years4.28 2.10 2.66 3.83 5-10 Years— 2.02 2.98 2.96 After 10 Years — 1.95 — 1.95 Total4.18 %1.95 %2.96 %2.41 %Weighted Average Maturity (years)1.6 25.5 7.0 18.4 

(a)Weighted average yields are calculated on the basis of yield to maturity based on the carrying value of each debt security, aggregated by type and agency.

(b)Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises. 

(c)Based on final contractual