Who are John and Laura Arnold? Billionaire couple donates nearly half of their $2.9 billion fortune to philanthropy

John and Laura Arnold, a philanthropic power couple, have already donated over $2 billion, nearly half their fortune, fulfilling their Giving Pledge commitment while alive. Their data-driven approach targets systemic issues in healthcare, criminal justice, and education, aiming for immediate, measurable impact rather than delayed legacy. This hands-on strategy sets them apart as a unique success story in billionaire philanthropy.