FI  Willett Advisors

     Office Locations:

650 Madison Avenue, 17th Floor
New York, NY 10022
Phone: 212-783-9500



  • Middle Market



  • Energy & Clean Tech
  • Life Sciences & Healthcare
  • Media & Digital Media
  • Real Estate & Construction
  • Software & Internet



    Willett Advisors LLC manages the philanthropic assets of Michael R. Bloomberg, including the assets of Bloomberg Philanthropies. Michael Bloomberg is an American businessman, engineer, author, politician, and philanthropist. He is the founder, CEO, and owner of Bloomberg L.P., a global financial services, mass media, and software company. Additionally, Bloomberg served as the 108th Mayor of New York City, holding office for three consecutive terms, beginning with his first election in 2001. Licensed as a commercial pilot, Bloomberg pilots an AW109 helicopter, and is near the top of the waiting list for an AW609 tiltrotor aircraft. In his youth, he was a licensed amateur radio operator, was proficient in Morse code, and built ham radios. As of February 2018, his net worth was estimated at $50.8 billion, making him the 7th-richest person in the United States and the 10th richest person in the world. He has joined The Giving Pledge, whereby billionaires pledge to give away at least half of their wealth.



      Fund Name



    Get funds under management for this firm including Fund name, Dollar size of fund raise, and Vintage with a National Database subscription or New York Database subscription.

    Investment Firm Key

       VC = Venture Capital
       PE = Private Equity
       A = Angel
       I = Incubator
       MB = Merchant Bank
       VD = Venture Debt
       FI = Family Investment Office
       FOF = Fund of Funds
       ED = Economic Development Office   
       TT = Technology Transfer Office
       CVC = Corporate Venture Capital
       SEC = Secondary Purchaser
       HF = Hedge Fund/Mutual Fund
    Venture Capital
    Seed Stage
    (includes "pre-seed," or
    concept stage)
    No Revenue
    Early StageMinimal
    Growth Stage
    (also called Mid-stage)
    Expansion Stage
    (also called Late-stage)
    $7M and greater
    Private Equity
    Lower Middle Market$10M-$249M
    Middle Market$250M-$499M
    Upper Middle Market$500M-$1B
    Large Cap>$1B

    Investment Team:

    Name   Title
    Get the complete investment team + individual email addresses for investment team partners. Get personal images, LinkedIn links, investment specialties, office locations and more with a National Database subscription or New York Database subscription.
    Andrew Mulderry Co-CIO
    Binu George CFA Head of Investment Manager Diligence
    Boris Raykin CFA Director
    Bradford B. Briner Co-CIO
    Charanya Rangamannar Associate Director


    Recent Funding Events (trailing 12 months):







      Disc Medicine



      Series B


      Circle Internet Financial





    Portfolio companies include:


    Recent News: