All investors have a vast knowledge about stock markets. Another name for a stock market is an equity market. Those two terms can be used interchangeably. A stock market is an equivalent of a public market that allows people to trade shares and derivatives at an agreed price. If you observe share prices regularly, you will see that BP is one of those companies that actively participates in a stock market. BP has been a lot in the news recently mainly due to the oil spill in the Gulf of Mexico. If you want to know the BP share price on the world stock market, you will need to find a place that will provide you with the information you need. As a matter of fact, this does not have to be so difficult if you know where to look for the right type of information. I have always believed that share dealing was an interesting and engaging hobby. The world stock market can be a fascinating thing to observe. Did you know, for example, that the size of the world stock market was estimated at about $36.6 trillion USD at the beginning of October 2008? You have to admit that it is a huge number. Investors from all over the world invest in stocks every day hoping to make a profit. They observe the prices of shares hoping to make a profit whenever an opportunity arises. Trading shares in a stock market is one of the oldest ways to make a profit. It might be a little bit riskier way to make money, but it is a fascinating one. Those who decide to do it and succeed are rewarded with a high income that can allow them to live comfortable lives. Some of the richest people in the world are investors.