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By Laura Woods / GoBankingRates
October 17, 2016
Key Speakers At The 2016 SALT Conference
Kenneth Griffin, founder and chief executive officer of Citadel LLC
Bloomberg—Bloomberg via Getty Images

Managing top hedge funds is certainly no easy task, but mastering the art comes with a salary most can only dream about. The world’s most talented hedge fund managers, such as Ken Griffin and David Tepper, are among the richest people on the planet.

After years of major financial gains, these hedge fund managers can buy pretty much anything their heart desires. But while many enjoy the heights of luxury, others prefer a surprisingly modest lifestyle.

Learn more about the spending habits of six top hedge fund billionaires.

1. Ken Griffin

Ken Griffin is the founder and CEO of Citadel. The Citadel group is a global investment firm based in Chicago that, as of Sept. 1, manages $25 billion in assets. A skilled hedge fund manager, Griffin’s net worth is $7.5 billion.

In 2015, Griffin garnered a whopping $1.7 billion, which is slightly more than his 2014 earnings of $1.3 billion, according to Institutional Investor’s Alpha, which reports on the hedge fund industry.

A billionaire with predictably lavish tastes, Griffin purchased a multi-floor New York City condo in 2015 for approximately $200 million. In 2014, he purchased two condos in Chicago’s luxury Waldorf Astoria hotel for $16 million and $13.3 million. He sold the $16 million unit for the same price he paid for it in December 2015.

He owns two other full-floor condos in Chicago that he purchased for $15 million in 2012, as well as homes in Aspen, Colo., and Hawaii. Just last year, the hedge fund manager purchased two beachfront Miami properties for $60 million, but put both of them back on the market in early 2016.

Real estate aside, Griffin enjoys expensive art. Last year, he purchased a painting by Jackson Pollock and another by Willem de Kooning for a grand total of $500 million, reported the Wall Street Journal. A known philanthropist, Griffin has donated over $500 million to educational, healthcare and community development causes.

2. James Simons

James Simons technically retired from his $32 billion hedge fund firm Renaissance Technologies Corp. in 2010, but he still hasn’t completely stepped away from the company he founded. His success has earned him a $16.5 billion net worth.

Founded in 1982, Renaissance Technologies is behind the Medallion Fund, largely considered one of the most profitable in the world. The hedge fund has certainly proven lucrative for Simons, as he earned $1.7 billion in 2015 and $1.2 billion in 2014, reported Institutional Investor’s Alpha.

Notoriously private, Simons owns homes in New York City and on Long Island’s north shore. Additionally, he owns a 222-foot yacht named Archimedes.

Along with his wife, Marilyn, James founded the Simons Foundation in 1994 to support research in math and science, including a segment dedicated to understanding, diagnosing and treating autism. The couple has donated more than $1 billion to causes, as of 2014.

The Simons also signed Bill and Melinda Gates’ and Warren Buffett’s Giving Pledge, promising to donate more than half their wealth to charitable causes.

3. Ray Dalio

Ray Dalio, founder and co-chief investment officer of Bridgewater Associates, is worth an estimated $15.9 billion. Known as the world’s largest hedge fund firm, Bridgewater Associates manages more than $150 billion in assets. Personally, Dalio earned $1.4 billion in 2015 and $1.1 billion in 2014, reported Institutional Investor’s Alpha.

Beyond the fact that he lives in Greenwich, Conn., with his wife, Barbara, little information is publicly available about the location or cost of his home. As of 2012, the couple and their four sons lived in a 5,500-square-foot colonial home in Connecticut in the Belle Haven neighborhood. Around the same time, The New Yorker reported they owned another home in Connecticut and were building a new residence on the water.

The family started the Dalio Foundation in 2003 as a way to support causes close to each family member’s heart. The foundation gave more than $115.5 million to various causes in 2014. In 2013, the billionaire hedge fund manager was even reported to have donated $400 million of his own funds to the foundation. Ray and Barbara have also signed the Giving Pledge.

Read: Extreme Ways Brilliant People Challenge Themselves

4. David Tepper

David Tepper is the founder and president of Appaloosa Management, a firm worth $19 billion, according to Forbes. He is reportedly worth an estimated $11.4 billion, earning him the No. 35 spot on Forbes’ 400 list of the wealthiest Americans.

Founded in 1993, Appaloosa Management is an employee-owned hedge fund sponsor. In 2015, Tepper garnered an impressive $1.4 billion, which actually seems low when compared to his 2013 earnings of $3.5 billion, reported Institutional Investor’s Alpha.

His home is certainly fit for a billionaire. He purchased a Sagaponack, N.Y., property in 2010 for $43 million, and promptly tore down the house on the property to build a new home. Completed in 2015, his new 11,270-square-foot oceanfront residence boasts 11 bedrooms and six bathrooms. He recently moved his entire company to Florida from New Jersey, too.

Read: Here Is the Biggest Home for Sale in Every State

The Pittsburgh native and Carnegie Mellon University alum has been generous to his alma mater. From 2004 to 2013, he committed more than $125 million in charitable gifts to the school, including $55 million to rename the Graduate School of Industrial Administration the Tepper School of Business.

5. Israel Englander

Israel Englander — also known as Izzy — is the founder, chairman and CEO of Millennium Management. One of the best hedge fund managers in the business, Englander’s net worth is $5 billion.

Since founding Millennium in 1989 with $35 million in assets under management, he has grown the firm into a global powerhouse with more than 2,000 employees and nearly $34.3 billion in assets, as of Oct. 1. His hard work has paid off, too, earning him $1.15 billion in 2015 and $900 million in 2014.

The New York City resident purchased a duplex apartment for $71.3 million in 2014. The sky-high price tag was owed to a bidding war, with the list price in April 2014 for the property reportedly at $48 million.

The billionaire established his charitable Englander Foundation in 1991. It primarily donates money to Jewish groups and temples, but also offers some funding for education and human services. The Englander Foundation gave a total of $641,330 to various causes in 2014.

6. Leon Cooperman

Omega Advisors founder Leon Cooperman has a net worth of $3.1 billion. A former Goldman Sachs standout, he left the company after 25 years in 1991 to found his own hedge fund firm.

Omega has $5.4 billion in assets under management, as of Aug. 31, 2016. In 2013, he earned $825 million and $560 million in 2012, reported Institutional Investor’s Alpha.

Despite his billions, the Short Hills, N.J., resident is notoriously frugal. Cooperman takes taxis instead of private car services and, while he owns four cars — three Lexus models and a Volkswagen Passat — they’re all older or used. He used to have a second home in Boca Raton, Fla., but reportedly put it up for sale in 2014.

Read: 11 Billionaires With Big, Bold Ideas

In 1981, Cooperman and his wife, Toby, established a fund for their charitable giving. In 2014, they donated $25 million to St. Barnabus Medical Center — the largest gift in the hospital’s history. Like others on this list, the Coopermans have also signed the Giving Pledge.

Net worth figures are indicative of assets versus liabilities. All net worth figures are according to unless otherwise noted. This article originally appeared on GoBankingRates.