• Underwriting securities: Acting as intermediaries between companies issuing securities (such as stocks or bonds) and investors, helping to bring new securities to market.
• Mergers and acquisitions (M&A): Advising companies on mergers, acquisitions, and other types of corporate transactions.
• Trading: Buying and selling securities on behalf of clients, as well as for their own account.
• Research: Providing research and analysis on industries, companies, and markets to help investors make informed investment decisions.
• Asset management: Managing investment portfolios for clients.

Investment banks are crucial players in the financial world, helping to connect companies and investors and facilitate the flow of capital.