Sen Marquin Mullen (R-Okla.) could become the next head of the Department of Homeland Security, as he was recently nominated to replace him. Christie’s name By the President Donald Trump. A current member of the Senate, Mullen has been an active stock trader in recent years.
Mullen made three stock trades on Feb. 25, according to data from the state-run Benzinga trading website. The senator bought $50,000 to $100,000 United Nations Health Group shares
This is combined with the senator’s purchase of $15,001 to $50,000 in health insurance stock in September 2025. Earlier, Mullen had sold his previous holding in the stock in August 2025.
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The senator currently serves on the Committee on Health, Education, Labor and Pensions and on the Subcommittee on Labor, Health and Human Services, and Education and the Subcommittee on Primary Health Care and Retirement Security.
The duties of this committee may create potential conflicts of interest in the purchase of health insurance stock.
Mullins’ recent disclosures show sales ranging from $15,001 to $50,000. Intuit Stock and sell for $50,001 to $100,000 AutoZone Inc Stock Both transactions are marked as full sales of this stock.
The senator bought between $15,001 and $50,000 in Intuit stock in December 2025 and September 2025. Based on the high stock prices on the purchase date, the shares were sold at a loss.
Mullins bought back AutoZone shares in October 2023 and September 2023. The last sale was made with more than 45% of the stock based on the highest price of the shares on each purchase date and the sale price on February 25.
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Benzinga recently shared that Mullen owns oil stocks and defense stocks, which come as the senator’s holdings boosted his holdings in those sectors amid a US attack on Iran.
Mullins also buys shares of small-cap investment companies, which can be overlooked because many members of Congress buy shares of large-cap stocks.
The senator is also actively buying six of the top seven stocks, marking some of his biggest purchases in recent years.
According to data from Quiver Quantitative, Mullen has made more than 500 stock trades totaling more than $24 million in buy and sell transactions since 2023.
