Citadel CEO Ken Griffin donates $300M to Harvard, GSAS renamed in his honor.

Hedge fund billionaire and Harvard alum Ken Griffin has donated $300 million to his alma mater, bringing his total donations to over $500 million. In recognition of his four decades of giving, the Graduate School of Arts and Sciences will be renamed the Harvard Kenneth C. Griffin Graduate School of Arts and Sciences. Griffin's $150 million donation to the school for undergraduate financial aid in 2014 remains the largest single gift for financial aid in the institution's history, supporting over 600 students to date. Griffin has made significant contributions to education, health care, art, and other initiatives, and his total philanthropic giving is nearing $2 billion.