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

MrBeast reacted to Ken Griffin donating $2.25 million to his water fundraiser, Team Water, in a video that aired exclusively ...

In a move that proves the power of live TV and a little public pressure, YouTube megastar MrBeast just landed a $2.25 million ...

Billionaire Ken Griffin's investing acumen has turned Citadel LLC into the world's most profitable hedge fund, but he's not ...

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

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

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

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.

Big-name hedge funds had to navigate quant pain and tariff noise in a turbulent July.

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, Palm Beach's largest property owner, requested the taller fence because of the natural grade on his estate's north property line.

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.