In financial market transactions, investors in the process of speculation, due to the influence of various factors, will cause most people to lose money, while a small number of people will make profits, following the 28 th law. Futures, foreign exchange, precious metals and other products traded in the market have long and short trading systems. Using computer software, investors can get the trading data of long and short trades, and reverse trades, that is, the more investors lose, the more they gain from reverse trades.

Second, the origin of reverse documentary

The prototype of reverse trading was inspired by Kahneman and Smith's theoretical test project of behavioral economics and experimental economics in 2002, and most traders failed in testing the results of behavioral psychology. Some clever foreign financial experts began to apply Kahneman's theoretical test project to the stock market and derivatives market, and later it was implicitly used by many international hedge fund companies. Due to the special historical factors of China's financial market, China's financial products and trading system are unique. The early reverse documentary mode was only recognized by the public psychologically, but few people actually used this mode to conduct transactions. Previous issues such as financial products, project awareness and joining experience were all obstacles at that time. In recent years, with the gradual opening up of various fields in China, China's financial market has been constantly innovating. In the field of futures, the reverse documentary trading mode is widely used in the 20 15 stock index futures market. At that time, the financial market was in the hardest hit area, and stocks and stock indexes plummeted across the board. However, the reverse merchandiser did make huge profits under the banner of programming (concealing its profit model), from the yield of 100% to the profit of 1000% or more. On September 20 15, in order to effectively prevent financial market risks, the China government regulated stock index futures, and all groups engaged in reverse trading transferred their markets and applied them to commodity futures and global trading markets. The emergence of this model will have a far-reaching impact on China's financial market and even the global financial market, and will surely become the focus of attention in the future.

Third, the application of reverse documentary

As the name implies, the precondition of reverse documentary is that the financial products traded must be able to trade in reverse from time to time, that is, financial products must have a short-selling mechanism. At present, most of the financial products with short-selling mechanism in China are in the futures market, and the best trading is the stock index futures products of China Financial Futures Exchange, which have low handling fee, low spread, large spread, large market trend fluctuation and uneven participants (the main reference factor for reverse documentary). At present, due to many products, scattered participants, too large subject weight, small capital plate, unfavorable floating space and other factors, the regression of reverse documentary will be unstable in the application process. Many people blindly apply it to commodity futures because they don't do a certain link in the whole project chain, and even can't see the essence of futures market, which leads to the failure of most people who do reverse documentary transactions. Of course, after eliminating unfavorable factors and improving them, experienced people have obvious profitability. More people apply reverse documentary to international financial products, such as Singapore A50 (similar to domestic stock index), Hong Kong Hang Seng Index, American crude oil, gold, foreign exchange and other products. It is concluded that reverse documentary is widely used. As long as there are financial products with long-short mechanism in the world, reverse documentary has its living space.