Willett Advisors is a family office - single based in New York, United States, founded in 2010. Verified contact details, AUM data, and investment preferences on FindLPs.
Willett Advisors is a single-family office for Michael R. Bloomberg, based in New York City, New York. Established in 2010, the firm manages philanthropic assets for the family including the assets of Bloomberg Philanthropies. It primarily invests in the public equity markets. It also invests in real assets focusing on oil and natural gas areas.
Investment types: Private Equity, Growth/Expansion, Hedge Fund, Real Assets & Natural Resources - General, Venture Capital, Venture Capital - Early Stage, Venture Capital - Later Stage
Sectors & themes: Traditional Investments (Liquid Assets), Financial Services
Preferred geographies: United States, California, West Coast
Location: 650 Madison Ave\n18Th Floor\nNew York\nNew York\n10022\nUnited States
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LP firm data compiled from public regulatory filings (SEC Form ADV, FCA, AIFMD disclosures), company websites and press releases, LinkedIn public profiles, and verified outbound email testing. AUM figures reflect self-reported values from filings and may lag by 1–2 fiscal quarters; bands are normalized in USD. We do not publish personal residential information; firms or individuals may request removal at /contact. Methodology & sources · Updated July 2026.