Bank of America is one of the largest U.S. financial institutions, serving consumers, small and mid-sized businesses, large corporations, and institutional investors across four business segments: Consumer Banking, Global Wealth & Investment Management (GWIM), Global Banking, and Global Markets. Consumer Banking is the largest segment, providing everyday retail and small business banking — checking and savings accounts, credit cards, mortgages, and auto loans — to tens of millions of U.S. customers. GWIM serves affluent and high-net-worth clients through Merrill and the Private Bank, with over $4.8T in total client balances. Global Banking covers corporate and commercial lending, investment banking, and treasury services, while Global Markets handles sales and trading in equities and fixed income, currencies, and commodities. Bank of America earns revenue through two main streams: net interest income, earned on the spread between loan and securities yields versus deposit costs, and fee revenue from asset management, sales and trading, investment banking, and service charges. The consumer deposit franchise — nearly $950B in deposits at a very low average cost — is a key funding advantage. Growth strategy centers on organic client acquisition, deepening existing relationships, geographic expansion, and technology investment, particularly AI. Bank of America has deployed its AI assistant Erica at scale and uses AI tools to manage costs without proportional headcount growth.