Company: FCNCB
Filing Date: 2025-11-07
Form Type: 10-Q
Source: 0000798941-25-000050
Chunk: 15

Company: FIRST CITIZENS BANCSHARES INC /DE/
Filing Date: 2025-11-07
Form: 10-Q
Item: Item 2
Chunk 15
---
 or the amount due at maturity include excess liquidity (primarily comprised of interest-earning deposits at banks and proceeds from maturities and paydowns of investment securities), FHLB advances, deposit growth, and issuance of unsecured debt or other borrowings. At the time of voluntary prepayment or maturity, the interest rates for the potential interest-bearing sources of repayment could be higher than the 3.50% rate. 

65

Investment Securities Duration

At September 30, 2025, our investment securities portfolio primarily consisted of debt securities available for sale and held to maturity as summarized below. We manage debt security market risk by monitoring the average duration of our investment securities portfolio. The duration of our investment securities was approximately 2.5 years at September 30, 2025. The investment securities available for sale portfolio had an average duration of 2.1 years and the held to maturity portfolio had an average duration of 4.2 years. Refer to the “Interest-earning Assets—Investment Securities” section of this MD&A and Note 3—Investment Securities for further information.

Table 4Investment Securities Summary

dollars in millionsSeptember 30, 2025Composition (1)Amortized CostFair ValueFair Value to Amortized CostTotal investment securities available for sale79.6 %$35,187 $34,963 99.4 %Total investment securities held to maturity20.1 10,051 8,838 87.9 Investment in marketable equity securities0.3 78 110 141.5 Total investment securities100 %$45,316 $43,911 (1) Calculated as a percentage of the total fair value of investment securities.

Capital Position

At September 30, 2025, all regulatory capital ratios for BancShares and FCB exceeded the Prompt Corrective Action (“PCA”) well capitalized thresholds and Basel III requirements as further discussed in the “Capital” section of this MD&A.

RESULTS OF OPERATIONS

Net Interest Income and Net Interest Margin 

NII is affected by changes in interest rates and changes in the amount and composition of interest-earning assets and interest-bearing liabilities. Interest income and expense and the respective yields and rates include amortization of premiums, accretion of discounts, and impacts from hedging activities. 

The following tables present the average balances of interest-earning assets and interest-bearing liabilities with the associated yields and rates, interest income and expense, and