Investment Banking (’IB’) is the advisory business of helping companies, governments, and institutions raise capital and execute transactions — most notably mergers & acquisitions (M&A) and capital markets deals — in exchange for fees.
The street is loosely organised into tiers. There is genuine disagreement at the edges, but the shape is well understood:
| Tier | What defines it | Examples |
|---|---|---|
| Bulge Bracket (BB) | Full-service global banks with balance sheet; every product, every geography | JPMorgan, Goldman Sachs, Morgan Stanley, BofA, Citi, Barclays, UBS |
| Elite Boutique (EB) | Advisory-only, no balance sheet; conflict-free; top pay & prestige | Centerview, Evercore, Lazard, PJT, Moelis, Perella Weinberg, Rothschild (Europe) |
| In-Between-a-Bank (IBAB) | Large regional/national banks with real advisory but narrower reach | HSBC, BNP Paribas, SocGen, Deutsche Bank, RBC, Mizuho, Nomura |
| Middle Market (MM) | Focus on smaller deals (~$50M–$1bn), often sponsor-driven | Jefferies, Houlihan Lokey, Harris Williams, Lincoln, William Blair, Baird |
| Boutique / Sector | Small, specialised, relationship-led; one sector or product | Allen & Co (TMT), FT Partners (fintech), Qatalyst (tech), Clipperton (EU tech) |