Markwayne Mullin bought American Express Company (NYSE: AXP)
Markwayne Mullin (R-OK), a U.S. Senator, has disclosed 3 trades in American Express Company (AXP) since 2023, all purchases, worth an estimated $49K in disclosed volume (the midpoint of the dollar ranges members report, not exact amounts).
The trade highlighted here is a purchase: Markwayne Mullin bought $15,001 - $50,000 of American Express Company (NYSE: AXP) on September 13, 2023. Since that trade, AXP is up +115.10% against the S&P 500 up +69.14%, an outperformance of +45.96%.
Across these filings, Markwayne Mullin has been a net buyer of AXP. The most recent disclosed AXP transaction shown was dated December 29, 2025. Each row in the table below links to that trade and its post-trade performance versus the market.
Data updated
Markwayne Mullin's AXP trades vs the price
AXP is up +115.10% since Markwayne Mullin bought on September 13, 2023, versus +69.14% for the S&P 500.
Performance since this trade
All Markwayne Mullin AXP trades
Markwayne Mullin & AXP trading FAQ
Is it legal for Markwayne Mullin to trade American Express Company (AXP) stock?
Yes. Members of Congress are allowed to trade individual stocks, including American Express Company (AXP), 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 AXP?
Markwayne Mullin disclosed a purchase of $15,001 - $50,000 of American Express Company (AXP) on September 13, 2023, according to public STOCK Act filings.
How has AXP performed since Markwayne Mullin's trade?
Since Markwayne Mullin bought AXP on September 13, 2023, the stock is up +115.10%, versus +69.14% for the S&P 500 over the same period, an outperformance of +45.96%.
How many times has Markwayne Mullin traded AXP?
Markwayne Mullin has disclosed 3 AXP trades since 2023. 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 AXP trades?
Quantellect tracks every disclosed congressional trade in American Express Company (AXP) on the American Express Company congressional trading page, which aggregates filings across all members of Congress.
Markwayne Mullin's AXP tradesAll congressional filings for American Express CompanyMarkwayne 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.