When MrBeast and Mark Rober were on TODAY last week talking about their new project getting clean water to millions of people ...

MrBeast's Team Water initiative received a boost. Ken Griffin donated $2.5 million after MrBeast's public request. The ...

YouTuber Jimmy "MrBeast' recently shared news of a major donation by American billionaire Ken Griffin that has topped ...

Ken Griffin has the distinction of being one of history's most successful investors. The billionaire founded and leads ...

While appearing on TODAY last week, MrBeast challenged Ken Griffin, CEO of the hedge fund Citadel, for a donation to his philanthropic campaign, Team Water. Griffin heard the call and answered. TODAY ...

Not even a billionaire and Palm Beach's largest property owner Ken Griffin can build a fence without permission from the town ...

Billionaire investor Ken Griffin is placing a major bet on a company that's far outperformed expectations this year.

The gift will support the under-construction Braman Comprehensive Cancer Center in Miami Beach and a freestanding Emergency ...

Billionaire philanthropist and Citadel CEO Ken Griffin has donated $15 million to Mount Sinai Medical Center to help expand cancer research and treatment in Miami Beach and Hialeah.

Ken Griffin has a few bones to pick when it comes to “Dumb Money” – among them the way the star-studded flick depicts his habits when it comes to expensive art.

Griffin, who’s worth an estimated $30.5 billion, according to Bloomberg Billionaires Index, has slowly ramped up his involvement — and his election spending — over the last decade.

Billionaire Ken Griffin, an ardent foe of billionaire Democratic Gov. J.B. Pritzker, declared Wednesday he was “all in” to back a candidate running to defeat the governor next year.