* Bill Gates, $86 billion

• Jeff Bezos, $75.6 billion

• Warren Buffett, $74.9 billion

• Amancio Ortega, $74.2 billion

• Mark Zuckerberg, $61.4 billion

• Carlos Slim, $58.1 billion

• Charles Koch, $47.9 billion

• David Koch, $47.9 billion

• Larry Ellison, $47 billion

• Bernard Arnault, $43.5 billion