Senator Markwayne Mullin's stock portfolio has surged significantly since he joined Congress, with a recent $2.8 million investment in Chevron coinciding with President Trump's attack on Venezuela. Mullin, Trump's nominee for Homeland Security Secretary, has become one of the most prolific stock traders in Congress, reporting over 130 trades in 2023 alone. His financial disclosures reveal a dramatic wealth increase from $2.8 million to $97 million between 2012 and 2024, though exact figures remain within broad ranges due to disclosure rules.

This pattern of frequent trading, including purchases in companies like Microsoft and defense contractors that may benefit from D. H. S. contracts, has drawn scrutiny as his nomination moves forward.