Markwayne Mullin bought Capital One Financial Corporation (NYSE: COF)
Markwayne Mullin (R-OK), a U.S. Senator, has disclosed 3 trades in Capital One Financial Corporation (COF) since 2025, all purchases, worth an estimated $183K in disclosed volume (the midpoint of the dollar ranges members report, not exact amounts).
The trade highlighted here is a purchase: Markwayne Mullin bought $50,001 - $100,000 of Capital One Financial Corporation (NYSE: COF) on December 29, 2025. Since that trade, COF is down -14.38% against the S&P 500 up +6.34%, an outperformance of -20.72%.
Across these filings, Markwayne Mullin has been a net buyer of COF. Each row in the table below links to that trade and its post-trade performance versus the market.
Data updated
Markwayne Mullin's COF trades vs the price
COF is down -14.38% since Markwayne Mullin bought on December 29, 2025, versus +6.34% for the S&P 500.
Performance since this trade
All Markwayne Mullin COF trades
Markwayne Mullin & COF trading FAQ
Is it legal for Markwayne Mullin to trade Capital One Financial Corporation (COF) stock?
Yes. Members of Congress are allowed to trade individual stocks, including Capital One Financial Corporation (COF), but the STOCK Act of 2012 requires them to publicly disclose each transaction within 45 days. Quantellect tracks those disclosures; this page does not imply the trade was improper.
When did Markwayne Mullin buy COF?
Markwayne Mullin disclosed a purchase of $50,001 - $100,000 of Capital One Financial Corporation (COF) on December 29, 2025, according to public STOCK Act filings.
How has COF performed since Markwayne Mullin's trade?
Since Markwayne Mullin bought COF on December 29, 2025, the stock is down -14.38%, versus +6.34% for the S&P 500 over the same period, an outperformance of -20.72%.
How many times has Markwayne Mullin traded COF?
Markwayne Mullin has disclosed 3 COF trades since 2025. Every disclosed trade is listed on this page.
How soon must members of Congress disclose a trade?
Under the STOCK Act, members of Congress must publicly report a covered transaction within 45 days of the trade. Filings can still be delayed, amended, or contain errors.
Where can I see all congressional COF trades?
Quantellect tracks every disclosed congressional trade in Capital One Financial Corporation (COF) on the Capital One Financial Corporation congressional trading page, which aggregates filings across all members of Congress.
Markwayne Mullin's COF tradesAll congressional filings for Capital One Financial CorporationMarkwayne Mullin's full profile
Not investment advice. Congressional trading data is sourced from public STOCK Act disclosures, which are filed with a delay and may contain errors or be revised. Estimated prices and post-trade returns are derived algorithmically from public filings and end-of-day market data and describe historical activity, not a recommendation. Always do your own research and consult a licensed financial advisor before making investment decisions.