Direct Answer
Investment banks earn fees from advising on M&A and capital markets transactions (advisory fees, underwriting spreads) and from trading securities for clients and on a proprietary basis. Brokerage firms earn commissions and net interest on client assets. Both businesses are highly cyclical: deal activity collapses in recessions and market dislocations, then recovers sharply as conditions normalize.
Investment Banking Revenue: Advisory, Underwriting, and Trading
Advisory fees: earned for advising companies on M&A, restructuring, spin-offs, and other strategic transactions. Advisory is a pure fee business with minimal capital requirement; the margin depends on deal volume, average deal size, and competitive intensity. Fees are typically 0.5-1.5% of deal value for M&A and vary by deal complexity.
Underwriting fees: earned for managing equity (IPO, follow-on) and debt (investment-grade, high-yield, leveraged loans) capital markets transactions. Underwriting involves taking balance sheet risk (the bank purchases securities and resells to investors), so it requires capital and carries market risk during the underwriting period.
Trading revenue: earned from market-making (buying and selling securities to provide liquidity to clients) and, to a lesser extent, proprietary trading. FICC (Fixed Income, Currency, Commodities) and equities are the two trading segments. Trading revenue is highly variable: strong markets and high volatility typically produce better trading results than calm, low-volatility environments.
The Deal Cycle: M&A, IPOs, and High-Yield Issuance
Investment banking revenue is deeply cyclical. M&A activity peaks when corporate confidence is high, financing conditions are loose, and equity valuations are elevated (giving acquirers currency). IPO activity surges when markets are strong and investors are receptive to new issues. High-yield bond issuance is robust when credit spreads are tight and borrowers can access cheap capital.
The 2021-2022 period saw exceptional deal activity: record M&A, the SPAC boom, and massive high-yield and leveraged loan issuance. The 2022-2023 rate hiking cycle sharply curtailed activity: higher rates compressed valuations, widened credit spreads, and raised deal financing costs. M&A volumes fell 30-50% from peak. Recovery through 2024 was gradual, with backlogs of deferred transactions providing eventual tailwind.
Private equity sponsors are a critical client category: PE firms regularly need bank financing for leveraged buyouts (LBOs) and use banks for sponsor-to-sponsor sale processes. PE's record AUM and deployment pressure in 2024-2025 was expected to drive M&A recovery as sponsors accelerated exits.
Brokerage Economics: Commissions, NII, and Managed Accounts
Traditional brokerage economics have been disrupted by zero-commission trading (pioneered by Robinhood, adopted by Schwab and Fidelity in 2019). Brokerages now earn from: payment for order flow (PFOF, receiving compensation from market makers for routing retail orders), net interest income on uninvested client cash, margin loan interest, and managed account fees (advisory programs charging 0.25-1.5% annually on AUM).
Net interest income on client cash (sweep balances) became a significant revenue driver during the 2022-2023 rate cycle, as brokerages earned near-Fed-funds rates on client cash while paying well below market rates in sweep accounts. When clients moved cash into money market funds or T-bills, this "cash sorting" significantly reduced NII and was a key 2023-2024 headwind for Schwab and Robinhood.
The wealth management shift toward fee-based advisory (recurring AUM fees) over transaction-based (commissions) has improved revenue predictability for traditional brokerages like Raymond James and Edward Jones, creating annuity-like revenue streams that grow with market appreciation and net new asset inflows.
Major Players: Goldman Sachs, Morgan Stanley, Jefferies
Goldman Sachs (GS) is the preeminent global investment bank, consistently ranked #1 or #2 in M&A advisory and underwriting globally. Its Global Markets division (FICC + Equities trading) provides earnings stability relative to the highly cyclical banking fees. Goldman's failed foray into consumer banking (Marcus) was wound down as unprofitable.
Morgan Stanley (MS) has transformed into a wealth-management-heavy model through acquisitions (E*Trade, Eaton Vance), with Wealth Management and Investment Management now generating roughly half of revenue. This shift has improved earnings stability and warranted premium valuations relative to the more cyclical Goldman.
Jefferies Financial Group (JEF) is the leading mid-market investment bank, with stronger advisory share in the $500 million-$5 billion deal range than bulge-bracket competitors. It is the largest independent (non-bank-owned) investment bank after the boutique expansion wave.
Raymond James Financial (RJF) focuses on independent financial advisors and retail brokerage, with investment banking as a secondary activity. Its advisor-centric model provides more stable fee revenue than pure investment banking.
Investment Considerations: Cyclicality and Market Structure
Investment banking stocks trade on earnings multiples that expand in early-cycle deal recovery (as markets anticipate improvement from depressed levels) and compress as cycles mature. Price-to-book is also used, with premium for franchises with strong client relationships and trading market share.
The Volcker Rule (Dodd-Frank 2010) prohibited banks from proprietary trading and limited their ownership of hedge funds and PE funds, reducing the risk profile of investment bank balance sheets but also limiting a source of historical revenue. Trading revenue today is predominantly client-facilitation market-making rather than prop trading.
Boutique advisory firms (Evercore, Lazard, Centerview, PJT Partners) have grown share of M&A advisory versus bulge brackets by focusing exclusively on advisory without underwriting or trading conflicts. Their independent model appeals to clients seeking conflict-free advice. Evercore, Lazard, and Moelis are publicly traded; Centerview and Perella Weinberg are the other major private boutiques.
FAQ
What is the difference between investment banking and commercial banking?
Commercial banks take deposits and make loans, earning net interest income on the spread between borrowing and lending rates. They are regulated by the Fed and FDIC and carry insured deposits. Investment banks advise companies on strategic transactions (M&A, restructuring), underwrite securities offerings (IPOs, bond issuance), and trade securities for clients and their own account. Investment banks do not take retail deposits and are regulated by the SEC and FINRA. The Glass-Steagall Act (1933) separated the two until its repeal in 1999 (Gramm-Leach-Bliley). Large universal banks (JPMorgan, Bank of America) now do both.
What is payment for order flow (PFOF)?
Payment for order flow (PFOF) is compensation that market makers (Citadel Securities, Virtu Financial) pay to brokerages for routing retail customer orders through them rather than to exchanges. Market makers profit from the bid-ask spread on retail orders; they share a portion of that profit with the brokerage as PFOF. Brokerages like Robinhood earn a significant portion of revenue from PFOF. Critics argue retail customers may receive worse execution than on exchanges; defenders argue retail orders receive price improvement over the quoted spread. The SEC has proposed rules to change order routing practices.
Why do investment banks earn more in some years than others?
Investment banking revenue is deeply cyclical. Advisory fees depend on M&A deal volumes, which track corporate confidence, financing availability, and strategic window. Underwriting depends on IPO and debt capital markets activity, which tracks market conditions and investor appetite. Trading revenue correlates with market volatility and client activity. All three decline in recessions or rate-tightening cycles and recover sharply when conditions improve. The 2021 peak followed by 2022-2023 trough was one of the most severe cycles in recent memory, with advisory revenue falling 40-60% from peak at many banks.
What caused the growth of boutique investment banks?
Boutique advisory firms (Evercore, Lazard, Centerview, PJT) grew share by offering pure advisory without the conflicts inherent in full-service banks that both advise clients and underwrite, trade, or lend to them. After the 2008 financial crisis, corporate boards became more focused on conflict-free advice for major transactions. Boutiques also pay advisors more (no large trading or wealth management infrastructure to support), attracting senior bankers from bulge brackets. Top boutiques have achieved advisory market share on large deals competitive with Goldman and Morgan Stanley.