Billionaire activist investor Carl Icahn increased his holdings in Herbalife and Hertz Global Holdings in the fourth quarter, and exited Voltari.
The outgoing CEO of Canadian Pacific Railway is teaming up with former Pershing Square partner Paul Hilal to look at CSX, The Wall Street Journal said.
Bill Ackman turned on Mike Pearson, replacing him with Joe Papa hoping that Valeant could be turned around, The New York Times reports.
The New York Post says the hedge fund boss and his wife Karen Ann Herskovitz are getting a divorce after 25 years together.
Investors complain that Pershing Square Holdings kept about 72 percent of the fund’s gains for itself, the Times reports.
The properties up for grabs could include the their $90 million penthouse at One57.
Papa said he would consider selling some of Valeant's core businesses and assets against the wishes of some of its major shareholders.
Kraft-Heinz is planning to acquire Mondelez, which is currently in the midst of a $3 billion cost saving program, according to a report.
CNBC's Meg Tirrell reports the latest surrounding the Valeant and Philidor controversy. CNBC's Kate Kelly and David Winters, Wintergreen Advisors CEO, weigh in on Valeant's stock.
Donald Trump's astonishing victory over Hillary Clinton was met with a mostly warm reception by the U.S. business community.
CNBC's Kate Kelly reports highlights from the New York Times' DealBook Conference, including activist investor Bill Ackman on Trump and his key investments, and CBS & Viacom Vice Chair Shari Redstone on the possible recombination of CBS and Viacom.
At the New York Times' DealBook Conference, CNBC's Andrew Ross Sorkin speaks with activist investor Bill Ackman about PepsiCo CEO Indra Nooyi's comments how activist investors shame CEOs in the media.
At the New York Times' DealBook Conference, CNBC's Andrew Ross Sorkin speaks with activist investor Bill Ackman, Pershing Square Capital Management CEO, about Donald Trump's presidential victory.
Ackman spoke at the DealBook Conference, hosted by CNBC anchor and New York Times columnist Andrew Ross Sorkin.
Jim Cramer issued a warning about one drug stock that could leave a portfolio feeling ill.
Jim Cramer spoke with Chipotle CFO Jack Hartung, who commented on recent discussions with activist investor Bill Ackman.
Icahn Investor Group increased its stake in Hertz to 33.8 percent as the stock fell 22.5 percent on an earnings miss and guidance cut.
According to Reuters, Pershing Square's Bill Ackman signs a confidentiality agreement with Chipotle on turnaround talks. CNBC's Dominic Chu reports. CNBC's Mike Santoli and CNBC contributor Evan Newmark weigh in.
The transaction increases the billionaire investor's stake to 23.1 percent, from 20.8 percent.
His firm will take up residence in a West Side building, part of an area that is being transformed into an office and restaurant hub.