AP Photo/J. Scott Applewhite

51 US senators and their spouses have up to $96 million invested in corporate stocks, according to an analysis by Sludge and the Guardian, raising conflict of interest concerns.

Sen. Richard Shelby, Sen. Shelley Moore Capito, and Sen. Jacky Rosen own significant amounts of stock in companies they oversee.

Together, 10 members of the Senate banking committee hold up to $8 million worth of stock in finance, securities, and real estate companies.

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Fifty-one US senators and their spouses have up to $96 million invested in corporate stocks, raising conflict of interest concerns because many of them could pass laws that help those businesses and thus enrich themselves.

An analysis by Sludge and the Guardian — a deep dive you can check out here — looked at the senators' disclosed stakes totaling $28 million to $96 million across finance, defense, health, communications and electronics, and energy and natural resources companies.

Members of Congress aren't legally barred from owning stock in companies they oversee, but having a vested interest in their success could affect their impartiality and willingness to pass laws that hurt those businesses.

Legislators are under mounting pressure to crack down on predatory lending, abuse of user data, climate change, sweetheart military deals, prescription drug prices and the opioid crisis. Senators' stakes in banks, tech giants, fossil-fuel companies, defense contractors, and healthcare giants could temper their desire to tackle those issues.

The median investment range was between $100,000 and $365,000, Sludge and the Guardian said. The most popular stocks included Apple, Microsoft, Google-owner Alphabet, Amazon, Berkshire Hathaway, and Wells Fargo. The biggest single investment was Sen. John Hoeven's stake in Westbrand — a private holding company for banks — which is worth between $5 million and $25 million.

Several lawmakers hold shares in companies they oversee, the analysis found. Sen. Richard Shelby owns between $1 million and $5 million worth of stock in Tuscaloosa Title Company, a private real estate insurance firm, despite sitting on Senate housing and insurance subcommittees. Nine other members of the Senate banking committee hold financial stocks including Sen. Doug Jones, Sen. John Kennedy, and Sen. Robert Menendez.

The trend extends beyond banking. Sen. Shelley Moore Capito owns substantial stakes in Microsoft, Intel, AT&T, and Verizon, despite sitting on technology and consumer protection subcommittees. Sen. Jacky Rosen, who also sits on those subcommittees, owns up to $480,000 worth of Amazon, AT&T, and Adobe stock.

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