Bill Ackman
American billionaire hedge fund manager born 1966
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| 2024 | Ackman stepped down from the board of Howard Hughes Holdings after being chairman since 2010. |
| 2024 | Ackman endorses former President Donald Trump in the United States presidential election, breaking from his previous support of Democratic candidates. |
| August 1 2024 | Ackman withdrew the Pershing Square IPO and announced plans to relaunch the fund with a new transaction structure. |
| July 14 2024 | Endorsed Trump following his attempted assassination. |
| May 16 2024 | The Washington Post reported Ackman's involvement in a WhatsApp group chat with Israeli military leaders and US business leaders aimed at changing public opinion about the Israel-Hamas conflict. |
| April 2024 | Announced he would not support Joe Biden in the upcoming election due to Biden's alleged 'lack of support' for Israel and expressed openness to voting for Trump. |
| January 2024 | Ackman attempted to raise $25 billion to take Pershing Square public but secured only $2 billion. |
| January 15 2024 | Endorsed Congressman Dean Phillips for the Democratic presidential nomination, with Phillips suggesting a potential Cabinet post for Ackman. |
| January 3 2024 | Business Insider published an exposé about plagiarism in his wife Neri Oxman's dissertation, leading Ackman to pledge a plagiarism review of MIT faculty. |
| November 2023 | Initiated a campaign to remove Claudine Gay as Harvard's president, arguing her response to antisemitism was insufficient. |
| November 2023 | Ackman supported Elon Musk after his controversial comments about Jewish communities and initiated a campaign to remove Claudine Gay as Harvard's president. |
| October 8 2023 | Following the Hamas attack on Israel, Ackman demanded the publication of names of Harvard student signatories to a letter condemning Israel's actions, stating they should be publicly known to prevent future hiring. |
| February 2023 | Ackman announced that his foundation, along with an anonymous donor, would fund David M. Sabatini $25 million over five years to establish and run a new research laboratory. |
| December 2022 | Ackman auctioned a lunch with himself for charity in partnership with the David Lynch Foundation, raising funds to support New York's frontline healthcare workers, police, and veterans battling mental health challenges. He matched the highest winning bid of $210,000. |
| March 1 2022 | At a Pershing Square Foundation event, Ackman delivered remarks supporting David M. Sabatini, a biologist who was fired from the Howard Hughes Medical Institute and resigned from Whitehead Institute and MIT due to sexual misconduct allegations. |
| March 15 2021 | Ackman donated 26.5 million shares in South Korean e-commerce company Coupang, valued at $1.36 billion, to three different entities, including his own foundation. |
| 2020 | Controversially claimed in a Bloomberg News interview that he could play a close doubles match against professional tennis player John McEnroe. |
| March 18 2020 | Ackman called for a 30-day shutdown of the American economy during a CNBC interview to slow the spread of coronavirus, warning about potential economic destruction. |
| March 3 2020 | Pershing Square disclosed a $27 million hedge to protect its portfolio against market losses, which generated $2.6 billion in less than a month. |
| 2019 | Pershing Square hedge fund returned 58.1%, qualifying it as one of the world's best performing hedge funds for the year. |
| 2019 | Had first child with Neri Oxman in the spring. |
| January 2019 | Married Neri Oxman at the Central Synagogue in Manhattan. |
| 2018 | Became engaged to Israeli-American designer Neri Oxman. |
| February 28 2018 | Ackman exited his billion-dollar short bet against Herbalife after the company's stock continued to rise. |
| January 2018 | Told investors he would return to basics by cutting staff, ending investor visits, and focusing intensively on research after experiencing weak performance from 2015-2018. |
| March 2017 | Ackman sold his remaining 27.2 million Valeant shares to Jefferies investment bank for about $300 million, after a substantial investment loss. |
| December 22 2016 | Reported separation from first wife Karen Ann Herskovitz after 22 years of marriage. |
| April 27 2016 | Ackman testified before the United States Senate Special Committee on Aging regarding Valeant Pharmaceuticals' business model and pricing practices. |
| January 2015 | LCH Investments named Ackman one of the world's top 20 hedge fund managers after Pershing Square delivered $4.5 billion in net gains for investors in 2014. |
| January 2015 | LCH Investments named Ackman one of the world's top 20 hedge fund managers, with Pershing Square's lifetime gains reaching $11.6 billion since its launch. |
| 2014 | Ackman spent $50 million on a public relations campaign against Herbalife and invested $4.5 billion in net gains for Pershing Square investors. |
| July 2014 | Challenged Athletes Foundation honored Ackman at a gala fundraiser at the Waldorf Astoria hotel in New York City, where he helped raise a record $2.3 million for providing sports equipment to people with physical disabilities. |
| August 2013 | Ackman stepped down from the J.C. Penney board following a disagreement with fellow board members, ending a two-year transformation campaign. |
| December 2012 | Ackman issued a research report criticizing Herbalife as a pyramid scheme, causing the company's stock price to drop. |
| May 2012 | Ackman began short selling Herbalife shares, starting a campaign against the company's business model. |
| 2011 | Ackman and his wife were featured on The Chronicle of Philanthropy's 'Philanthropy 50' list of most generous donors. |
| 2010 | Ackman became chairman of Howard Hughes Holdings, a long-term investment by Pershing Square. |
| 2010 | Pershing Square began buying J.C. Penney shares, acquiring 39 million shares (18% of the company's stock) at an average price of $22 per share. |
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