Ken Griffin owns NYC's priciest condo. Mamdani wants to hike his property taxes — and others'.

Tech Insider : Business
A picture of a Manhattan apartment building
220 Central Park West

RBL/Bauer-Griffin/GC Images

2024 hedge-fund returns: Schonfeld, D.E. Shaw, and Walleye among the year's big winners

Tech Insider : Business, Style
Ryan Tolkin
Ryan Tolkin is the CEO and chief investment officer of Schonfeld Strategic Advisors.

Schonfeld

Citadel CEO Ken Griffin is lending his 'epic' $44.6 million Stegosaurus fossil to the American Museum of Natural History

Tech Insider : Business
Billionaire Ken Griffin's stegosaurus fossil on display at the American Museum of Natural History on December 5, 2024.
Ken Griffin's stegosaurus fossil at the American Museum of Natural History on December 5, 2024.

TIMOTHY A. CLARY/AFP/Getty Images

Here's what some of the world's most powerful people have to say about Elon Musk

Tech Insider : Politics, Business
Elon Musk
CEOs and politicians weighed in on Elon Musk's role as a political advisor to president-elect Donald Trump.

Brandon Bell/Getty Images

Citadel founder Ken Griffin says it's 'preposterous' for Elon Musk to shoulder the 'entire burden' of cutting the budget

Tech Insider : Business
Ken C. Griffin speaks during The New York Times Dealbook Summit 2024 at Jazz at Lincoln Center.
Billionaire Citadel founder Ken Griffin was interviewed by Andrew Ross Sorkin at The New York Times DealBook Summit.

Eugene Gologursky/Getty Images for The New York Times

Balyasny leads the way for multistrategy managers in a roller-coaster November. Here's how firms like Citadel, Millennium, and more performed.

Tech Insider : Business, Style
Balyasny
Dmitry Balyasny speaks at the 2018 Milken Conference in Beverly Hills, California.

Lucy Nicholson/Reuters

Blackstone's Steve Schwarzman was a trade negotiator for Donald Trump's first term. Here's what it took to get the president to a deal.

Tech Insider : Business, Economy, Politics
Three men in suits sit side-by-side
From L: Donald Trump, Steve Schwarzman, and Chris Liddell

BRENDAN SMIALOWSKI/AFP via Getty Images

Citadel founder Ken Griffin said he would be 'open' to selling a stake in his $65 billion hedge fund

Tech Insider
Ken Griffin speaking on a stage
Ken Griffin is willing to sell a part of his $65 billion hedge fund for the first time.

Michael Kovac

Ken Griffin takes a 44% loss selling 2 Chicago penthouses he never lived in as he moves to Florida

Tech Insider
Ken Griffin
Ken Griffin, the founder of the hedge fund Citadel, is selling off his Chicago real estate as he moves to Florida.

Vernon Yuen/Getty Images

Amazon invests in nuclear energy, hot on the heels of Google and Microsoft

Tech Insider
An image of X Energy's XE-100 nuclear reactors
An image from X-energy's website showing the design of its XE-100 nuclear reactor plants.

X Energy

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