The reality is that investing in the stock market carries risk, but when approached in a disciplined manner, it is one of the most efficient ways to build up one's net worth. While the value of one's home typically accounts for most of the net worth of the average individual, most of the affluent and very rich generally have the majority of their wealth invested in stocks. Commodities are hard assets ranging from wheat to gold to oil. Commodities trading determines the prices of all commodities. As a result, the prices of the most important items you use every day are volatile. In some cases, like gasoline, they change from day to day.
A significant amount of trading occurs in oil, gold, and agricultural products.