美股投资需了解哪些关键信息？

Group 1 - The U.S. stock market is characterized by high openness and diversity, encompassing various industries and companies of different sizes, providing a wide range of investment targets from tech giants to traditional manufacturing firms [1] - The trading mechanism in the U.S. stock market is flexible, with long trading hours and unique rules such as the market maker system, which helps maintain market liquidity and stability [1] - Strict market regulation ensures a fair, just, and transparent trading environment for investors [1] Group 2 - Investors need to have a deep understanding of listed companies, as the U.S. market includes a wide range of sectors, each affected differently by macroeconomic conditions, industry cycles, and technological changes [2] - Financial health, operational strategies, and governance quality are key factors determining a company's investment value, with strong financial statements and effective strategies supporting sustainable growth [1][2] Group 3 - Macroeconomic and policy environments significantly impact the U.S. stock market, with indicators like economic growth, inflation, and employment data influencing corporate performance and profitability [2] - Changes in monetary and fiscal policies directly affect market liquidity and funding costs, while tax adjustments and government spending can either support or constrain different industries [2] - Currency exchange rates are crucial for non-U.S. dollar investors, as fluctuations can affect investment returns when converting to local currencies [2] Group 4 - Risk awareness is essential in U.S. stock investment, as market, industry, and company-specific risks can affect returns [3] - Market risks arise from macroeconomic fluctuations and geopolitical tensions, while industry risks stem from competition and technological advancements [3] - Company-specific risks focus on internal management and operational issues, and diversifying investment portfolios through asset allocation is an effective way to mitigate risks [3]