The Giving Pledge was designed to hold the world’s richest people accountable for donating at least half their fortunes in their lifetimes or wills–but so far, only John and Laura Arnold have actually done it.

From well-known Wall Street energy trader to philanthropist, John Arnold began his career trading natural gas at Enron and later ran a hedge fund, Centaurus Partners. By 2012, he had retired and fully pivoted to philanthropy at 38 years old.

The Arnolds have donated over $2 billion to date, and more than $204 million in 2024, according to Forbes. Currently, their net worth is around $2.9 billion, meaning their donations amount to about 42 percent of their wealth.

In addition, John Arnold has a Forbes philanthropy score of 5 out of 5. The score is based on those who have dona

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