The global economic crisis has had a significant impact on financial markets around the world. When economic conditions worsen, investors tend to become more conservative, leading to drastic changes in investment patterns and sharp market fluctuations. In these conditions, investors usually look for safer assets, such as government bonds or gold, thereby increasing demand for these instruments. One of the main impacts of the economic crisis is a decline in stock values. When companies face challenges, their earnings can fall, which in turn affects share prices. Major stock indexes, such as the S&P 500 and Nikkei 225, often record substantial declines during periods of crisis. In many countries, market volatility is increasing, creating uncertainty that influences investment decisions. In addition, global economic crises often cause the strengthening of certain currencies, especially the US dollar. The increase in demand for the dollar as a global reserve currency leads to an appreciation of its value against other currencies. This could put pressure on developing countries that have dollar debt, increasing their debt burden and fueling fears of default. Liquidity is also a serious problem during the crisis. Many financial institutions may face difficulties in accessing capital, which could slow credit activity. This has an impact on economic growth, because businesses have difficulty getting financing for investment and expansion. As a result, the economy as a whole can be trapped in a prolonged cycle of recession. Institutional and individual investors seek to manage their portfolios by adjusting asset allocations. This involves increasing investment in assets that are considered safer, such as real estate or financial instruments that carry less risk. On the other hand, opportunism also appears in the market, with investors looking for opportunities in stocks that are undervalued due to uncertainty. Changes in monetary policy by central banks are also a common response to economic crises. To stimulate growth, central banks usually cut interest rates, carry out quantitative easing, or even take more unconventional steps. These policies aim to increase liquidity and encourage investment, although they often have complicated long-term effects. The sectors most affected during the global economic crisis include finance, energy and travel. These sectors usually experience a significant decline in income and find it difficult to recover in a short time. Changes in consumer behavior also often impact the performance of these sectors, with many people reducing their spending on non-staple goods. Finally, the psychological impact of the economic crisis should not be ignored. Economic uncertainty often creates fear among investors and consumers, which in turn can make the situation worse. Disrupted market confidence has the potential to slow economic recovery and create a fragile safety net for financial markets. Thus, the global economic crisis has had a comprehensive impact on financial markets, from decreasing stock values ​​to adjusting monetary policy. Understanding these mechanisms is critical for all market participants, both individual investors and financial institutions, to navigate the challenges posed by economic uncertainty.