Back to website
What’s Known About Michael Burry’s Strategies What’s Known About John Paulson’s Strategies
4 mins read

What’s Known About Bill Ackman’s Strategies

Bill Ackman, a prominent figure in the world of finance, has garnered widespread attention for his innovative investment strategies and notable successes in the market. With a career spanning decades, Ackman has established himself as a leading activist investor, value investor, and expert in special situations. 

His unique approach to investing, characterized by a combination of activism, value analysis, and strategic foresight, has earned him both admiration and scrutiny from peers and investors alike.

Background and Early Life

Bill Ackman is an American businessman and investor who was born on May 11, 1966, and grew up in a Jewish family in Chappaqua, Westchester County, New York. His father was the chairman of Ackman Brothers & Singer, a commercial real estate mortgage brokerage in New York. 

Ackman attended Horace Greeley High School and went on to graduate magna cum laude from Harvard. He also earned his MBA from Harvard. Ackman’s interest in investing was sparked at a young age due to his family’s real estate background. He began his career working for his father in the real estate industry before founding Gotham Partners in 1992 with his Harvard classmate David Berkowitz. 

The fund quickly grew from $3 million in assets under management to $300 million, attracting investors such as Seth Klarman and Michael Steinhardt. However, Gotham Partners encountered legal troubles and was dissolved in 2003.

Ackman’s Investment Approach

Ackman’s investment approach involves avoiding excessive diversification, learning from mistakes, ignoring short-term market turbulence, and adopting a long-term approach. He focuses on a small number of companies whose businesses are easily understandable and predictable. He is not afraid to admit when he’s wrong and to correct course. 

Ackman believes it’s not possible to predict short-term market swings and that upward swings and downward swings are part of the market. He has a well-defined investment strategy and reduces any temptation to exit positions due to short-term volatility.

Ackman’s investment philosophy is centered around a long-term view, as he believes that a company’s current valuation is often unrelated to its potential for future growth. 

He focuses on catalysts that could drive the stock price higher, such as the potential for corporate restructuring or a new product launch. He has been successful in the merger and acquisition space, as his firm has been involved in several high-profile deals.

Ackman’s Notable Investment Successes

Bill Ackman, the renowned investor and hedge fund manager, has had several notable investment successes throughout his career. Some of his most prominent ones include:

General Growth Properties (GGP)

In 2010, Ackman’s hedge fund, Pershing Square Capital Management, made a significant investment in GGP, a real estate investment trust that owned a large portfolio of shopping malls. As GGP faced bankruptcy due to the financial crisis, Ackman played a crucial role in restructuring the company, which resulted in substantial returns for investors.

Canadian Pacific Railway

Ackman took a large position in the Canadian Pacific Railway (CP) in 2011, advocating for changes in its management and operations to improve efficiency and profitability. His activist efforts led to a successful turnaround of the company, significantly increasing shareholder value.

Valeant Pharmaceuticals

Although controversial, Ackman’s investment in Valeant Pharmaceuticals International (now Bausch Health) initially yielded substantial profits for Pershing Square. However, the investment later faced challenges as Valeant became embroiled in controversies surrounding drug pricing and accounting practices.

Chipotle Mexican Grill

Ackman’s investment in Chipotle Mexican Grill came at a time when the company was struggling with food safety issues and declining sales. His involvement prompted changes in management and operations, contributing to the restaurant chain’s recovery and subsequent stock price appreciation.

Howard Hughes Corporation

Ackman’s hedge fund invested in Howard Hughes Corporation, a real estate development and management company, which benefited from its valuable land holdings in strategic locations. Under Ackman’s guidance, the company pursued initiatives to unlock shareholder value, resulting in significant returns for investors.

Criticisms and Controversies

Bill Ackman, despite his notable successes, has faced criticisms and controversies throughout his career. Some of the notable ones include:

  1. Personal Feuds and Public Spats: Ackman’s outspoken nature and willingness to publicly spar with other investors and corporate executives have contributed to his controversial reputation. His public feuds with individuals such as Carl Icahn and Daniel Loeb have attracted media attention and have sometimes overshadowed his investment activities.
  2. Activist Tactics: Ackman’s activist tactics have drawn criticism, with some questioning their disruptive nature and short-term focus over long-term company interests. While some see activism as beneficial for shareholder value and governance, others argue Ackman’s aggressive approach may not always align with the broader stakeholders’ interests.
  3. Overleveraging and Concentrated Bets: Critics question Ackman’s concentrated investment strategy, citing his tendency to heavily leverage a small number of bets. While this approach offers the potential for high returns, as seen with Valeant Pharmaceuticals, it also exposes him to significant risk, prompting concerns about his risk management practices.
  4. Valeant Pharmaceuticals Investment: Ackman’s investment in Valeant Pharmaceuticals faced criticism due to the company’s controversial practices and subsequent stock decline amidst regulatory scrutiny. Despite initial profits, Ackman received backlash for defending Valeant and overlooking associated risks, highlighting the challenges of his investment approach.
  5. Herbalife Short: Ackman’s high-profile short on Herbalife in 2012 sparked a Wall Street debate, alleging it was a pyramid scheme. Despite his billion-dollar bet and public campaign, which clashed with investors like Carl Icahn, it resulted in significant losses for Pershing Square and criticism of Ackman’s aggressive tactics.

The Bottom Line

In summary, Bill Ackman’s finance career combines notable achievements with notable controversies. While praised for innovative strategies like activism and value analysis, his aggressive approach and susceptibility to risks have invited criticism, notably from high-profile missteps such as the Herbalife short and Valeant Pharmaceuticals investment. Nonetheless, Ackman remains a polarizing figure with a significant impact on the financial landscape.


  • Well Known Investors

    What’s Known About William O’Neil’s Strategies 

    In the world of investing, the name William O’Neil commands respect and intrigue. An astute investor, prolific author, and founder of Investor’s Business Daily (IBD), O’Neil has left an indelible mark on the realm of finance. Central to his legacy are the investment strategies he developed and refined over decades of meticulous study and practical …
    What’s Known About William O’Neil’s Strategies
  • Well Known Investors

    What’s Known About Cathy Woods’ and Ark Invests’ Strategies 

    Cathie Wood, a prominent figure in the financial industry, has made waves with her innovative investment strategies through ARK Investment Management. Known for her forward-thinking tactics and disruptive innovation approach, Wood has challenged traditional investment philosophies and carved a unique path in the finance world.  With a focus on businesses that have the potential to …
    What’s Known About Cathy Woods’ and Ark Invests’ Strategies
What’s Known About Michael Burry’s Strategies What’s Known About John Paulson’s Strategies