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Elizabeth Warren’s Power in New Senate Is a Wall Street Nightmare

The Massachusetts Democrat is expected to head the powerful Senate Banking Committee

By Corrie Driebusch and Dylan Tokar, WSJ

Nov. 5, 2026

Sen. Elizabeth Warren is expected to become chairman of the Senate Banking Committee, giving her expansive authority over the financial industry.

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For nearly two decades, Sen. Elizabeth Warren has needled and probed Wall Street at every turn.

She’s called the private-equity industry legal “looting” and written a bill that could make it easier to jail executives. She’s called for criminal probes into banking executives for failing to catch blowups. She’s sought to delay the biggest IPO of all time, SpaceX, and raised questions about Anthropic’s existential risks to humanity. She’s pledged to look into bankers’ ties to Jeffrey Epstein and dealings with the Trump administration.

Now, the Massachusetts Democrat is about to take the controls of the powerful Senate Banking Committee, giving her the kind of expansive authority over the financial industry she’s long sought—and Wall Street has feared.

With her characteristic gusto and new subpoena powers, Warren is expected to usher in an era of heightened oversight and investigations into the likes of JPMorgan Chase, Bank of America, Wall Street moneymen and the new generation of trading technologies from crypto to prediction markets.

“It’s hard to imagine it’s good news for these industries,” said former Sen. Pat Toomey, previously a Republican ranking member of the banking committee. “She’s been very aggressive in attacking banks over the years.”

Stock markets tumbled Thursday, with financial firms and crypto assets dropping, as investors grew fearful the Democratic agenda would hamper the artificial-intelligence boom and business broadly. The S&P 500 fell 4.4% while big banks like JPMorgan and Goldman Sachs fell more than 4% each.

To Warren and her supporters, becoming chairman of the Senate Banking Committee will be a chance to implement the consumer-populist agenda she has been pushing for years.

Sen. Elizabeth Warren speaking at a rally in Washington earlier this year.

Sen. Warren speaking at a rally in Washington earlier this year. Jemal Countess/Getty Images

“Democrats won this election by claiming we are on the side of working people, and working people are counting on us to deliver,” she wrote in an opinion piece in Time on Thursday.

Since the election, Warren staffers have been telling lobbyists and other allies like housing and consumer-protection groups that her early actions as chairman will be consistent with what she has been doing the last two years as the committee’s most senior Democrat—except now she will be driving the train.

Among her early priorities are likely to be taking on private equity, with her “Stop Wall Street Looting Act,” investigating allegations of insider trading at prediction markets and probing consumer protections at cryptocurrency companies.

Anyone who got a letter should be on high alert, people close to her have said.

Warren has pledged to try to work with Republicans and has found common ground with President Trump on topics like alleged discrimination in “de-banking” and seeking to crack down on credit-card fees.

“She has contentious relationships with the largest firms, and I don’t think that’s going to change,” said Brian Gardner, chief Washington policy strategist for Stifel, a brokerage and investment bank. However, he said, “I think she’s going to pick her battles. I don’t think she wants to be seen as simply anti-bank.”

She’ll have allies in Sen. Richard Blumenthal (D., Conn.), who will oversee the chamber’s Permanent Subcommittee on Investigations, and Rep. Maxine Waters (D., Calif.), the front-runner to chair the House Financial Services Committee. Both of them are expected to aggressively investigate the crypto industry and its ties to those in Trump’s orbit.

From professor to watchdog

Warren has built a career on Wall Street reform. She was a Harvard professor and bankruptcy expert when President Barack Obama tapped her to help create a consumer financial protection agency following the 2008 financial crisis.

Back then, banks viewing her as a firebrand radical helped block her from running the new agency. It’s an opposition some lobbyists now regret.

She was instead elected to the Senate in 2012 and in hearings has regularly grilled bankers and executives over the years. As the top Democrat on the committee over the last two years, Warren and her staffers have written hundreds of letters to companies demanding answers to thousands of questions.

She jumps on headlines and views herself as a key voice in the Democratic economic leadership, lobbyists say.

Much of her agenda has the power to crimp Wall Street revenues, particularly for private equity.

“Private-equity takeovers are legal looting that make a handful of Wall Street executives very rich while costing thousands of people their jobs, putting valuable companies out of business, and in the case of healthcare, is literally a matter of life and death,” Warren said in October when she introduced her private-equity bill.

Starting in January, Warren is expected to flex her powers as chairman with oversight of the Trump administration and its regulators, including focusing on allegations of corruption among the president and his family members, according to people familiar with the matter.

In a 41-page missive published earlier this week, Warren, on behalf of Democrats on the committee, called out companies from Capital One to Skydance, for conflicts of interest with the Trump administration.

“As the President has said, he’s willing to work with anyone to continue delivering victories for hardworking Americans,” White House spokeswoman Lauren Bis said. “If Democrats choose to pursue sham investigations and radical left policies, they are choosing to work against the American people.”

Senate watchers expect Warren to attempt to stand in for government organizations that have been pared down over the past two years, including the Consumer Financial Protection Bureau, the Securities and Exchange Commission and the Office of the Comptroller of the Currency.

Warren’s claim to the chairmanship stems from her being the committee’s most senior-ranking Democrat, but the title isn’t guaranteed.

Banking lobbyists eagerly ask if Sherrod Brown of Ohio, who led the committee during the Biden administration before losing his seat and was elected again this week, could try to assume the role again. But most Senate watchers think a competing bid is unlikely.

People close to Warren have said she wants to work with Republicans where they find common ground.

Warren this year was successful in passing a housing bill with Sen. Tim Scott (R., S.C.). She took a phone call from Trump about potentially working together to cap credit-card interest rates—a policy that appeals to populists in both parties. She has also joined with Treasury Secretary Scott Bessent and some Republicans lawmakers in pushing to raise the limit on deposit insurance.

The areas of synergy on populist policies are what worry some on Wall Street the most.

“The big question is: Are there areas of overlap between populist Republicans and Democrats that could result in what I would consider very anti-free market legislation,” said Toomey.