Goldman's revenue engine is deceptively simple at the top level — three segments, one balance sheet, 46,500 people — but the economics underneath are anything but straightforward. Global Banking & Markets is the heartbeat. This segment alone drove the majority of FY2025's $58.3 billion in net revenues through a combination of M&A advisory fees (Goldman ranked #1 or #2 globally in announced deal volume), equity and debt underwriting, and trading revenue from making markets in equities, fixed income, currencies, commodities, and derivatives. The critical thing to understand: this business is violently procyclical. When boards are confident and capital markets are open, Goldman prints money. When uncertainty freezes decision-making — as it did through much of 2022 and early 2023, when IB revenue dropped over 40% — the machine stalls. Asset & Wealth Management is the stabilizer Goldman has been building for a decade. Over $3 trillion in assets under supervision now generate management fees that arrive regardless of whether a single IPO prices in a given quarter. The alternatives platform — private equity, private credit, real estate, infrastructure — earns performance fees and carried interest that can be lumpy but are structurally higher-margin than public market products. The wealth side targets ultra-high-net-worth families and institutions whose portfolios are complex enough to justify Goldman's premium. This isn't Schwab territory. Minimum account sizes keep it deliberately exclusive. Platform Solutions is what remains after the consumer retreat. Transaction banking for corporate clients — cash management, payments, deposit gathering — still lives here, and it's actually a smart business: capital-light, relationship-deepening, recurring. The consumer lending remnants are being wound down. The net income figure — roughly $17.2 billion on $58.3 billion in revenue, a ~29.5% net margin — tells you something important. Goldman isn't a volume business grinding out thin spreads. It's a premium-pricing business that works because clients pay more when the alternative is getting a transformative deal wrong. A CEO selling a $40 billion company doesn't shop for the cheapest banker. They call Goldman because the reputational cost of a botched process exceeds any fee differential. The regulatory math constrains everything. Basel III requires Goldman to hold substantial equity against trading positions, lending commitments, and counterparty exposures. Return on equity typically runs 12-16%, which sounds modest until you realize the firm is generating those returns on a capital base that regulators force it to maintain far above what the business would naturally require. Every basis point of additional capital requirement directly compresses profitability.