Pershing Square Capital Management wants to be exempted from SEC fees after a former employee donated $500 to a political campaign.
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.
CNBC's Scott Wapner speaks to Herbalife's outgoing CEO Michael Johnson about the company's new management shakeup.
Chipotle hires a defense team against Pershing Square's Bill Ackman, including Goldman Sachs, high-powered lawyers and public relations specialists. CNBC's Kate Kelly reports.
The burrito chain is forming a team of high-profile investment bankers and lawyers to fend off any major changes.
Chipotle Mexican Grill has turned to high-profile investment bankers and lawyers to help defend against activist investor William Ackman.
Where and how to find yield has become a common theme for heavyweight investors Carl Icahn, David Tepper and Jeff Gundlach.
The full CNBC interview with Carl Icahn.
When you find someone who's got a track record of actually delivering alpha, it's worth a listen.