Chairman and CEO of the New York-based real estate company Hartz Group.
He graduated from New York University in 1957. The university's business school was later named in his honor.
He established the non-profit foundation Homes for the Homeless in 1986.
He and his first wife Judith Stern Peck had three children: Emanuel, Edward, and Andrea. The couple divorced in 1980, and Stern married model Allison Maher seven years later.
His younger son Edward J. Stern was the head of a hedge fund and was accused by New York Attorney General Eliot Spitzer of illegal financial activities related to mutual funds.