Company: FCNCB
Filing Date: 2025-11-07
Form Type: 10-Q
Source: 0000798941-25-000050
Chunk: 352

Company: FIRST CITIZENS BANCSHARES INC /DE/
Filing Date: 2025-11-07
Form: 10-Q
Item: Item 8
Chunk 352
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—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 changes therein due to changes in volume and yields or rates. Changes in interest income and expense due to changes in (i) volume (average balances of interest-earning assets and interest-bearing liabilities) and (ii) yields or rates are based on the following:

•The change in NII due to volume is calculated as the change in average balance multiplied by the yield or rate from the prior period. 

•The change in NII due to yield or rate is calculated as the change in yield or rate multiplied by the average balance from the prior period. 

•The change in NII due to changes in both volume and yield or rate (i.e., portfolio mix) is calculated as the change in rate multiplied by the change in volume. This component is allocated between the changes due to volume and yield or rate based on the ratio each component bears to the absolute dollar amounts of their total. 

•Tax equivalent NII was not materially different from NII, therefore we present NII in our analysis.

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Table 5Average Balances, Yields and Rates, NII