Billionaire hedge fund investor Bobby Jain and his wife, Carola Jain, have been channeling millions of dollars into socialist-leaning think tanks and advocacy groups aligned with New York City Mayor Mamdani’s progressive agenda. The Jains, who reside in a $20 million Upper East Side townhouse and a large estate in the Hamptons, are backing initiatives that promote policies such as universal basic income (UBI), rent freezes, and the decommodification of housing.

Their philanthropic efforts are primarily funneled through the Jain Family Institute (JFI), a nonprofit organization focused on developing economic models that explore wealth redistribution and large-scale cash transfers to low-income populations. JFI’s work supports proposals to transition New York’s housing market away from private landlord ownership toward public or nonprofit housing options. According to tax records, the couple has contributed over $30 million to the organization.

The Jains’ financial support comes amid Mayor Mamdani’s political drive to implement policies reflecting the Democratic Socialists of America’s platform, aiming to reshape the city’s approach to housing and social welfare. Mamdani has recently targeted wealthy landlords in efforts to increase affordable housing and tenant protections, including a viral public confrontation with hedge fund manager Ken Griffin that drew national attention.

Bobby Jain, a Queens native and former executive at Credit Suisse and Millennium Management, founded his own hedge fund, Jain Global, in 2024, which initially raised $5.3 billion. After modest returns in 2025, the fund returned outside capital and now manages only Millennium funds. Carola Jain, who has a background in marketing, primarily manages the couple’s philanthropic capital allocations.

JFI’s publication, Phenomenal World, edited by Robert “Jack” Gross—a noted fundraiser for Mayor Mamdani—advocates for a “capitalism for developers, communism for landlords” framework. It promotes arguments that only public ownership of housing can provide long-term rent stability, criticizing the private rental market for contributing to rising costs and displacement.

These activities have drawn criticism from some economists who view the Jains’ embrace of socialist policies as inconsistent with their wealth accrued in capitalist markets. Economist John Cochrane of Stanford University described the support for such policies as “absurd” and “well-proven disasters.” He contrasted their philanthropy with traditional patronage of classical arts, suggesting a disconnect between their resources and the causes they endorse.

Neither Bobby and Carola Jain nor representatives of JFI responded to requests for comment on their funding and advocacy. Meanwhile, the Jains’ backing has allowed them to largely avoid direct political scrutiny amid New York’s evolving debate over wealth, housing, and social equity.