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1. The economic barometer function of the stock market icon1. The nature and risks of derivative financial productsAccording to the research report of financial institutions, the trading volume of derivative financial commodity market usually drops sharply during the period of stock market downturn. This is because investors' income expectations of derivative financial products have decreased, while risk aversion has increased. For example, during the global financial crisis in 2008, the stock market plummeted, and the markets of derivatives such as futures and options also fell into chaos. Many investors suffered heavy losses because of the transactions of derivatives.

Stock capital market: if the stock price base does not rise, all other derivatives will be zero.Stock capital market: if the stock price base does not rise, all other derivatives will be zero.In the complex and charming financial world, the stock capital market is like the cornerstone of a magnificent building, while other derivative financial products are like building structures attached to this cornerstone. Once the stocks in the stock capital market do not rise, those seemingly diverse and exquisite other derivative financial products are almost equal to zero.

The stock market also has the function of resource allocation. The rising stock market can guide the flow of funds to enterprises with good efficiency and development potential, and realize the optimal allocation of resources. When the stock price does not rise, the flow of funds may be stagnant or disorderly, and those high-quality enterprises that should have been supported by funds may be ignored, resulting in waste of resources and inefficient allocation.Under the unified leadership of the CPC Central Committee and the State Council, the stock market has always been regarded as a barometer of a country or region's macro-economy. When the macro-economy improves, the profit expectation of enterprises increases, and the stock price often rises. For example, during the economic boom, the sales of products of technology giants like Apple increased greatly, profits continued to rise, and stock prices also rose. The price trends of many stocks can reflect the vitality and development trend of the overall economy. According to statistics, in the past economic cycle, there was a positive correlation between the stock market index and GDP growth of about 70%. This means that the rise of the stock market is often accompanied by macroeconomic growth, and the failure of the stock market may imply that there are potential problems in the economy.2. The function of capital accumulation and resource allocation in the stock market.