John D. Arnold

Follow to get push alerts on new activity

2026-06-23

What happened to John D. Arnold today?

No new stories today yet — we check every few minutes.

Browse by day

Today
06-23
—
Yesterday
06-22
—
6/21
Sun
—
6/20
Sat
—
6/19
Fri
—
6/18
Thu
—
6/17
Wed
—
6/16
Tue
—
6/15
Mon
—
6/14
Sun
—
6/13
Sat
—
6/12
Fri
—
6/11
Thu
—
6/10
Wed
—

By week:This week Last week W24 W23

By month:This month Last month 2026-04

By year:This year 2025 2024

Who is this?

John Douglas Arnold (born 1974) is an American billionaire. In 2007, Arnold became the youngest billionaire in the U.S. His firm, Centaurus Advisors, LLC, was a Houston-based hedge fund specializing in trading energy products that closed in 2012. He now focuses on philanthropy through Arnold Ventures LLC. Arnold is a board member of Breakthrough Energy and since February 2024, is a member of the board of directors of Meta.