John Arnold

John Arnold is an American billionaire, former hedge fund manager, and former natural gas trader. He is the founder and former CEO of Centaurus Advisors, LLC, a Houston-based hedge fund that specializes in trading energy products. The firm was composed of former Enron traders and was active from 2002 to 2012.

Arnold began his career as a natural gas trader at Enron, where he quickly rose through the ranks to become one of the company's top traders. He left Enron in 2002, shortly before the company's collapse, and founded Centaurus Advisors the same year. Under Arnold's leadership, Centaurus Advisors became one of the most successful and profitable hedge funds in the energy sector, with returns that consistently outperformed the market.

In May 2012, Arnold announced his retirement from running Centaurus Advisors, citing a desire to focus on philanthropy and political activism. Since then, he has been actively involved in a variety of charitable and political causes through Arnold Ventures LLC, an organization he founded with his wife, Laura. The organization has been known for investing in a variety of causes, including education, criminal justice reform, and public policy research.

Arnold is also known for his philanthropy, having donated millions of dollars to various charitable causes and organizations over the years. He is particularly interested in education and healthcare and has been a vocal advocate for education reform and healthcare policy changes.

Overall, John Arnold is a highly successful and influential businessman, philanthropist, and political activist. His career in the energy sector and his subsequent focus on philanthropy and political activism have made him a well-known figure in the business and political world.