Capital One Financial Corporation
MX ˙ BMV ˙ US14040H1059
SecurityMX:COF / Capital One Financial Corporation
InstitutionRound Rock Advisors, LLC
Latest Disclosed Ownership13,106 shares
Latest Disclosed Value $ 2,390,928
Round Rock Advisors, LLC reports 9.66% decrease in ownership of COF / Capital One Financial Corporation

On May 15, 2026 - Round Rock Advisors, LLC filed a 13F-HR form disclosing ownership of 13,106 shares of Capital One Financial Corporation (MX:COF) valued at $2,390,928 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on April 7, 2026 disclosing 14,508 shares of Capital One Financial Corporation. This represents a change in shares of -9.66% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F CAPITAL ONE FINL COM 14040H105 13,106 -1,402 -9.66 2,391 -32.03 0.3659
2026-04-07 2025-12-31 13F/A-1 CAPITAL ONE FINL COM 14040H105 14,508 25 0.17 3,516 14.23 0.5289
2026-01-27 2025-12-31 13F CAPITAL ONE FINL COM 14040H105 14,508 25 3,516 0.5287
2025-11-14 2025-09-30 13F CAPITAL ONE FINL COM 14040H105 14,483 -1 -0.01 3,079 -0.10 0.4878
2025-08-06 2025-06-30 13F CAPITAL ONE FINL COM 14040H105 14,484 189 1.32 3,082 20.21 0.5316
2025-04-30 2025-03-31 13F CAPITAL ONE FINL COM 14040H105 14,295 -40 -0.28 2,563 0.27 0.4753
2025-01-24 2024-12-31 13F CAPITAL ONE FINL COM 14040H105 14,335 -738 -4.90 2,556 13.30 0.5243
2024-11-04 2024-09-30 13F CAPITAL ONE FINL COM 14040H105 15,073 -165 -1.08 2,257 6.97 0.5275
2024-08-02 2024-06-30 13F CAPITAL ONE FINL COM 14040H105 15,238 675 4.64 2,110 -2.72 0.5137
2024-04-24 2024-03-31 13F CAPITAL ONE FINL COM 14040H105 14,563 -2,277 -13.52 2,168 -1.81 0.5195
2024-01-29 2023-12-31 13F CAPITAL ONE FINL COM 14040H105 16,840 16,840 2,208 0.5560
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.