The four pillars of investment banking are advisory, capital raising, trading and sales, and asset management. Advisory services focus on mergers, acquisitions, and restructuring, helping clients make strategic decisions. Capital raising supports clients in accessing funding through debt or equity issuance. Trading and sales involve executing market transactions and providing liquidity across financial instruments. Asset management helps institutional and high-net-worth clients grow wealth through tailored investment strategies. Together, these pillars support corporate, institutional, and private clients with complex financial needs.