Richest people on Earth became a bit poorer this year

Warren Buffett, the world's third-richest person, lost $11.3 billion as Berkshire Hathaway Inc. had its first negative annual return since 2011.

The world's 400 wealthiest individuals shed $19 billion in 2015, according to the Bloomberg Billionaires Index.

Falling commodities prices and signs of a slower-growing China spooked investors around the world leading to the first annual decline for the daily wealth index since its 2012 debut.