Risk is the uncertainty of future income. If the future is determined, there will be no risk ~ In economics, the size of risk is generally measured by variance, which is the fluctuation range of possible future income. The greater the variance, the greater the risk ~ there are many kinds of spot, and there are two kinds of domestic spot segmentation; Spot investment in bulk agricultural products and spot precious metals. The biggest characteristics of the spot are the long-short trend (whether the market is up or down, as long as the direction is judged correctly, it can be profitable), the margin system (leverage ratio, greatly improving the utilization rate of funds), and the T+0 model (buying and selling at any time, not limited by time), where banks sign a bank-merchant agreement to supervise and close their positions. Spot agricultural products are generally the leverage of Shouguang and Huichuan at 1:5, with a 7% increase or decrease. Because the trading volume on the disk is very small, hundreds of thousands of farms can be built, so there are many hidden farms, and the handling fee is 1~2 yuan, which means that 3~8% is more expensive ~ spot gold and silver are spot transactions, which means delivery within a few days after the transaction is completed. Spot gold is an international investment product, which is an investment and financial management project formed by gold companies establishing trading platforms and conducting online transactions with market traders in the form of leverage ratio. It is often called spot gold and is the largest stock in the world. Because the daily trading volume of spot gold is huge, the daily trading volume is about 20 trillion US dollars. Therefore, no consortium or institution can manipulate such a huge market artificially, relying entirely on the spontaneous adjustment of the market. There is no banker in the spot gold market, and the market is standardized, self-disciplined and sound. But at the same time, we should also pay attention to entering the black platform carefully. For example, the operating platform does not connect with the global market, and the customer's funds operate within the company of the black platform (mostly the rented MT4 platform), and the company earns the customer's money by manipulating the operation of the platform. For example, Century Gold, which sensationalized the whole country in 2008, is a typical black platform operation. More famous black platform, informal platform has the third wave of foreign exchange network ~