[Think of it as insurance. When people decide to hedge, they are insuring themselves against a negative event. This doesn't prevent a negative event from happening, but if it does happen and you're properly hedged, the impact of the event is reduced. So, hedging occurs almost everywhere, and we see it everyday.](http://www.investopedia.com/articles/basics/03/080103.asp)
How Do Investors Hedge?
Hedging techniques generally involve the use of complicated financial instruments known as derivatives, the two most common of which are options and futures. We're not going to get into the nitty-gritty of describing how these instruments work, but for now just keep in mind that with these instruments you can develop trading strategies where a loss in one investment is offset by a gain in a derivative.