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ADL
The Anti-Defamation League was founded in 1913 by Sigmund Livingston, a Chicago lawyer, in response to the lynching of Leo Frank and rising anti-Semitism.
ADL
The Anti-Defamation League was founded in 1913 by Sigmund Livingston, a Chicago lawyer, in response to the lynching of Leo Frank and rising anti-Semitism. Over more than a century, Adl built a permanent endowment—the Anti-Defamation League Foundation—to fund its advocacy, education, and legal work. Jonathan Greenblatt, a former Obama White House aide and entrepreneur, has run the organization since 2015, presiding over an endowment that Altss estimates at roughly $125 million in total assets. The endowment's investment posture is heavily weighted toward commercial real estate. The foundation holds the Adl National Headquarters at 605 Third Avenue in Midtown Manhattan, a property it has occupied and managed for decades. Additional owned offices include the Los Angeles Southwest Regional Office and a Jerusalem headquarters, giving the portfolio a tri-city real estate footprint across North America and Israel. The foundation also maintains an Art for Adl Portfolio, a collection likely used for fundraising and donor cultivation, alongside a Memorial to the Holocaust installation spanning Venice, Paris, and Kaunas. Adl invests across venture stages—from seed to late-stage expansion—though deal-level specifics are not publicly disclosed. The Adl endowment reports to Chief Financial Officer Susan Roberson. The Board of Directors is chaired by Ben Sax and Nicole Mutchnik, who oversee the fiduciary stewardship of the foundation alongside Greenblatt. Adl's Denver chapter joined the Denver Metro Chamber of Commerce in 2021, an operational signal of local-level institutional relationship-building. The Leon and Marilyn Klinghoffer Memorial Foundation, named for the victim of the 1985 Achille Lauro hijacking, operates as a closely affiliated philanthropic vehicle. Adl's structural differentiator is its endowment's real-asset concentration. Unlike most mission-driven foundations that default to public equities and fixed income, Adl's known holdings tilt heavily toward directly owned commercial real estate in gateway cities—a tangible, inflation-hedged allocation strategy that doubles as operational infrastructure for its advocacy work. The foundation's Israel and West Coast property exposure gives it a geographic diversification uncommon among peer civil-rights endowments.
General information
Firm type
Endowment / Foundation
Year founded
1913
Location
Region
North America
Country
United States
City
New York
Corporate office
605 Third Avenue, New York, NY 10158, United States
Additional offices
Los Angeles, CA · Jerusalem, Israel
Principals
Jonathan Greenblatt
CEO and National Director
Susan Roberson
Chief Financial Officer
Ben Sax
Chair of the Board of Directors
Sector focus
Frequently asked questions
Who oversees investment and fiduciary decisions at the ADL endowment?
Chief Financial Officer Susan Roberson is responsible for financial stewardship of the ADL endowment under CEO Jonathan Greenblatt's leadership. The Board of Directors, chaired by Ben Sax and Nicole Mutchnik, provides fiduciary oversight of the Anti-Defamation League Foundation's assets. Greenblatt has run the organization since 2015, overseeing the endowment's strategy alongside its broader advocacy mission.
What does the ADL endowment invest in?
The endowment is heavily concentrated in commercial real estate. Known holdings include the ADL National Headquarters at 605 Third Avenue in Manhattan, a Southwest regional office in Los Angeles, and a Jerusalem office property. The foundation also holds an Art for Adl portfolio and has participated in venture-stage investing from seed to late-stage expansion, though individual investments are not publicly disclosed.
How is the ADL endowment related to the broader Anti-Defamation League mission?
The Anti-Defamation League Foundation operates as the permanent endowment vehicle funding Adl's civil rights, education, and advocacy work. The endowment's real estate holdings serve a dual purpose as both investment assets and operational bases for regional offices. This architecture aligns the foundation's balance sheet with the organization's physical footprint across North America and Israel.
What is the size of the ADL endowment?
The ADL does not publicly disclose its endowment value. Altss estimates the endowment at roughly $125 million in total assets, based on known real estate holdings, operating scale, and peer benchmarks for century-old civil-rights foundations. The figure has not been confirmed by the organization.
What is the Leon and Marilyn Klinghoffer Memorial Foundation and how does it relate to ADL?
The Leon and Marilyn Klinghoffer Memorial Foundation is a closely affiliated philanthropic vehicle established in memory of Leon Klinghoffer, murdered in the 1985 Achille Lauro terrorist hijacking. The foundation operates alongside the main ADL endowment, functioning as one of several named funds within the ADL's larger philanthropic architecture. It supports anti-terrorism advocacy and victim remembrance initiatives.
Where are ADL's investment properties located?
The endowment's real estate portfolio spans three gateway cities: New York (the national headquarters at 605 Third Avenue in Midtown Manhattan), Los Angeles (the Southwest Regional Office), and Jerusalem (Adl's Israel headquarters). This tri-city footprint gives the foundation direct real estate exposure across North America and the Middle East.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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