Willett Advisors LLC is the family office responsible for managing the personal and philanthropic assets of Michael Bloomberg, founder of Bloomberg LP. The firm oversees approximately $25 billion and operates from New York City with a mandate to preserve and grow the Bloomberg family’s wealth while supporting the extensive philanthropic activities of Bloomberg Philanthropies.
Investment Strategy
Willett Advisors employs a diversified, institutional-quality investment approach across public markets, private markets, and real assets. The firm’s portfolio reflects a balanced allocation designed to generate consistent long-term returns while managing downside risk across market cycles.
In public markets, Willett maintains positions across global equities and fixed income, utilizing both internal management and external managers. The firm’s hedge fund allocation includes commitments to managers across equity long-short, macro, and multi-strategy approaches.
The investment team brings institutional experience from leading endowments, pension funds, and asset management firms. This background is reflected in the firm’s disciplined approach to portfolio construction, manager selection, and risk management. Willett operates with the sophistication of a large institutional investor while retaining the flexibility and speed of a family office.
The firm’s mandate includes supporting Bloomberg Philanthropies, which distributes significant capital annually to climate, public health, education, and government innovation initiatives. This philanthropic commitment influences the firm’s liquidity management and portfolio construction.
Private Markets Approach
Willett Advisors maintains a substantial private markets allocation across buyout, growth equity, venture capital, and real estate strategies. The firm commits to a diversified set of managers spanning established firms and selectively backing newer platforms with differentiated approaches.
In real estate, Willett has been active across commercial, residential, and specialty property strategies. Private equity commitments span multiple sectors and geographies, with a preference for managers who demonstrate repeatable, process-driven approaches to value creation.
The firm also participates in co-investments alongside its fund manager relationships, allowing it to increase exposure to high-conviction opportunities while improving overall portfolio economics. Venture capital commitments have grown as the firm has expanded its exposure to technology-driven sectors.
Fund managers should approach Willett Advisors as they would a sophisticated institutional LP. The firm conducts thorough operational and investment due diligence, expects institutional-quality reporting, and values GPs who maintain disciplined fund sizes relative to their investment opportunities.
Frequently Asked Questions
Does Willett Advisors allocate to external fund managers?
Yes. Willett Advisors maintains an active fund commitment program across private equity, venture capital, real estate, and hedge fund managers. The firm operates with institutional-scale diligence processes and is a meaningful LP in a diversified set of strategies.
What is Willett Advisors' investment philosophy?
Willett Advisors takes a diversified, risk-managed approach to preserving and growing the Bloomberg family's wealth. The firm balances growth-oriented investments in private equity and venture capital with more conservative allocations to fixed income and real estate, reflecting a multigenerational wealth preservation mandate.
How large are typical fund commitments from Willett Advisors?
Given the firm's approximately $25 billion in managed assets, Willett Advisors is capable of making institutional-scale commitments. Exact commitment sizes vary by strategy and manager but are generally consistent with the firm's status as one of the largest single-family offices in the United States.
