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Ken Griffin celebrates America's 250th birthday with $26 million gift for new Roosevelt Library built into the Badlands

Reported by Fortune
Jun 25, 2026· 3 min read
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Key Takeaways
  • • Kenneth C. Griffin, founder and CEO of the $69 billion hedge fund Citadel, donated $26 million to complete the Theodore Roosevelt Presidential Library in Medora, North Dakota, with the library's west wing bearing his name.
  • • The library opens July 4, 2026, coinciding with the United States' 250th birthday, and is designed by architecture firm Snøhetta as the nation's only carbon-neutral presidential library.
  • • Griffin's gift represents part of a broader pattern of philanthropic investment in American historical artifacts and institutions, following his record-setting $43.2 million purchase of a first printing of the U.S. Constitution at Sotheby's in November 2021.
  • • Griffin owns both surviving first printings of the Constitution held in private hands; he acquired the second copy (the Van Sinderen copy) in spring 2026 for an undisclosed sum, giving him ownership of 2 of the 13 known surviving copies from the original ~500 printed for the 1787 Constitutional Convention.
Summary
Kenneth C. Griffin, the billionaire founder and CEO of Citadel, delivered a $26 million gift to complete the Theodore Roosevelt Presidential Library in Medora, North Dakota, announced on Thursday ahead of the library's July 4, 2026 opening during America's 250th birthday celebration. The donation will name the library's west wing after Griffin and provides the final funding needed to complete construction of a facility designed by the international architecture firm Snøhetta.

The library represents a significant architectural and environmental undertaking. Built into the North Dakota Badlands landscape that shaped Theodore Roosevelt's formative years and political philosophy, the facility will function as the nation's only carbon-neutral presidential library—a structural embodiment of conservation principles aligned with Roosevelt's own legacy as a conservationist president. The location choice reflects deliberate symbolism, positioning the institution within the rugged terrain that defined Roosevelt's character and worldview.

Griffin's involvement in the project illuminates a strategic pattern of philanthropy focused on American historical narratives and founding documents. In November 2021, Griffin paid $43.2 million at Sotheby's for a first printing of the U.S. Constitution, setting an all-time auction record for a book, manuscript, or historical document—notably outbidding ConstitutionDAO, an internet collective of approximately 17,000 cryptocurrency enthusiasts who had crowdfunded for the purchase. That same pattern intensified in spring 2026 when Griffin quietly acquired the Van Sinderen copy, the only other surviving first printing of the Constitution in private hands. Griffin now owns both of the two remaining Constitution first printings held outside institutional collections. Of roughly 500 copies originally printed for delegates to the 1787 Constitutional Convention, only 13 are known to survive; 11 are held by institutions including the Library of Congress and the National Archives, leaving Griffin as the sole private owner of the remaining two.

This constellation of acquisitions—spanning a foundational constitutional document and a presidential library dedicated to conservation leadership—positions Griffin's philanthropy as a deliberate investment in preserving and interpreting core American institutional narratives.

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Fortune Ken Griffin celebrates America's 250th birthday with $26 million gift for new Roosevelt Library built into the Badlands