U.S. financial markets are platforms where buyers and sellers trade financial assets like stocks, bonds, and commodities. These markets include the New York Stock Exchange (NYSE) and the NASDAQ, which are primarily focused on stocks, while the U.S. Treasury market deals with government bonds. These markets play a crucial role in the economy by facilitating capital flow, allowing companies to raise funds for growth and providing investors with opportunities to earn returns. They are influenced by various factors, including economic indicators, interest rates, and global events, which can affect market performance and investor sentiment.