In 1982, when Forbes began ranking the richest people in the world, the qualification to be listed was only $75 million.
At that time, there were 13 billionaires on the list.
Today there are over 3,300 billionaires around the world.
From the stock market to businesses to commodities, they are all involved in some form of investing.
Here are some investing lessons we can learn from them…
This post originally appeared at MoneyMiniBlog.