Selling future bets
When you sell options, you want to make sure those couple of trades don’t turn into your big losses. You can generally do well in the commodities and futures markets by selling options if you're able to manage your risk and sell out-of-the-money options without letting a few bad trades destroy your account. Most investors think about buying an asset anticipating that its price will go up in the future. But short-selling always investors to do the opposite — borrow money to bet an asset’s price This is called "trading" or "buying and selling" a bet. Basically, what you do is you place or "buy" a bet at a low price, and then place an opposite bet or "sell" it at a higher price. How is such bet trading possible? Well, it's possible because the odds change.