United States securities and exchange commission logo December 27, 2023 Andrew M. Young Chief Financial Officer Capital One Financial Corporation 1680 Capital One Drive McLean, VA 22102 Re: Capital One Financial Corporation Form 10-K for Fiscal Year Ended December 31, 2022 Form 10-Q for Quarterly Period Ended September 30, 2023 File No. 001-13300 Dear Andrew M. Young: We have limited our review of your filing to the financial statements and related disclosures and have the following comments. Please respond to this letter within ten business days by providing the requested information or advise us as soon as possible when you will respond. If you do not believe a comment applies to your facts and circumstances, please tell us why in your response. After reviewing your response to this letter, we may have additional comments. Form 10-K for Fiscal Year Ended December 31, 2022 Management s Discussion and Analysis of Financial Condition and Results of Operations ( MD&A ) Table 6: Funding Sources Composition, page 55 1. We note your disclosure that period-end deposits increased by $14.2 billion at $270.6 billion as of December 31, 2022 from December 31, 2021 primarily driven by your national banking strategy and issuances of brokered deposits. Please revise your disclosures, in future filings, to provide more details around the national banking strategy, including any formal practices, guidelines, etc. which would allow an investor to understand the strategy and any related risks/trends. In addition, include discussion of any related impacts the brokered deposits have on your funding costs, net interest margin and to the extent applicable, whether you have policies or internal limits regarding concentrations in brokered deposits and / or uninsured deposits, in total or by type of depositor, and whether you have complied with any such internal requirements for the periods presented. Andrew M. Young FirstName Capital OneLastNameAndrew M. Young Financial Corporation Comapany27, December NameCapital 2023 One Financial Corporation December Page 2 27, 2023 Page 2 FirstName LastName Liquidity Risk Profile, page 92 2. Please disclose a table summarizing your total available sources of liquidity, by type of borrowing capacity, showing total borrowing capacity less borrowings outstanding to arrive at remaining capacity, then adding in other sources of liquidity such as cash, securities, etc. to arrive at total available liquidity, or tell us where this information is disclosed in the aggregate. Interest Rate Risk, page 97 3. We note your disclosures discussing various key assumptions associated with your net interest income sensitivity and economic value of equity sensitivity. The assumptions for your net interest income sensitivity include loan and deposit growth and pricing, and plans for projected changes in funding mix in your baseline forecast. Key assumptions used in the calculation of your economic value of equity sensitivity measure include projecting rate sensitive prepayments for mortgage securities, loans and other assets, term structure modeling of interest rates, discount spreads, and deposit volume and pricing assumptions. Please revise your disclosures, in future filings, to fully describe and define the various identified inputs and assumptions supporting your market risk presentations and sensitivity disclosures. In addition, provide a discussion of how any assumptions have changed from period to period, including any changes to the data source used or significant changes in the actual assumption itself. Form 10-Q for the Quarterly Period Ended September 30, 2023 Market Risk Profile, page 52 4. We note your disclosure and references to deposit beta as part of your net interest income and economic value of equity sensitivity analyses, which indicates that it increased compared to December 31, 2022. Please expand your disclosures, in future filings, to quantify and discuss changes in your deposit beta and/or cumulative deposit beta between periods presented, to the extent that it is monitored and used by management, as well as a more fulsome discussion of how the metric is calculated. In this regard, we noted commentary during your third quarter of 2023 earnings call discussing your cumulative beta. In closing, we remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Please contact Michael Henderson at 202-551-3364 or Robert Klein at 202-551-3847 with any questions. Andrew M. Young Capital One Financial Corporation December 27, 2023 Page 3 FirstName LastNameAndrew M. Young Sincerely, Comapany NameCapital One Financial Corporation Division of Corporation Finance December 27, 2023 Page 3 Office of Finance FirstName LastName