Billionaire hedge fund manager Bill Ackman announced plans to build a modern-day Berkshire Hathaway ( BRK.A 1.68%) ( BRK.B ...

Bill Ackman is supporting former hedge funder Whitney Tilson in his quest to become the next mayor of New York City.

Billionaire investor Bill Ackman is once again flexing his political muscle — this time by publicly touting the New York ...

An Elon Musk and Donald Trump admirer sparked a firestorm after praising his plan to aid wildfire victims in California with Cybertrucks and Starlink.

Former Business Insider editor in chief Nicholas Carlson spoke with Mediaite editor Aidan McLaughlin on this week’s episode of “Press Club” about why he left the news organization and his new company.

Billionaire Bill Ackman said he’s supporting former hedge fund manager Whitney Tilson in the crowded Democratic primary for ...

Last Thursday, the Tel Aviv Stock Exchange reported that it would buy 4.82% of its own shares from Manikay Partners for NIS ...

The deal does not include a provision to raise the debt limit. After days of heated negotiations on Capitol Hill and eleventh-hour interference from President-elect Donald Trump and his ally Elon ...

Billionaire Bill Ackman has taken the gloves off in his latest public battle, this time vowing to sue Business Insider for ...

Hedge fund billionaire Bill Ackman has said he expects Donald Trump to privatize two of the nation’s biggest government-owned mortgage lenders. The Trump-supporting financier said he believes ...