Quick facts
Investment banking is the trade of standing between capital and the people who need it: advising companies, governments and funds when they buy, sell, merge or raise money, and underwriting the stocks and bonds that pay for it. The job is older than its name — Renaissance Florence's merchant banks financed kings and popes through bills of exchange, and the Medici, Fugger and Rothschild houses ran recognizably modern versions of the business centuries before Wall Street existed.
The modern firm is a pyramid apprenticeship. Analysts fresh from university build the models and the hundred-page pitch books; associates and vice presidents run the deal process; managing directors win the clients and take the 2 a.m. phone call when a transaction wobbles. Pay is extreme at every level and so are the hours: a leaked 2021 survey of Goldman Sachs first-year analysts reported working weeks averaging around 95 hours.
This page follows the trade from the ruin of Florence's Bardi and Peruzzi banks in the 1340s through Jakob Fugger's purchased empire, J. P. Morgan's locked library, the invention of the Eurobond, London's Big Bang and the fall of Lehman Brothers. It covers how people actually get hired today, what the junior years demand, who reached the top of the profession — from Osaka to Lagos to Wall Street — and how much of the work AI can realistically absorb.
The profile
- Resists AI42
- Pay97
- Barrier to entry70
- Autonomy35
- Demand55
- Impact60
How exposed is it to AI?
High
A majority of current junior-banker hours go to tasks AI already performs credibly: assembling presentations, drafting first-cut models and comps, summarizing data-room documents, producing market-update materials. What resists automation is the senior franchise — winning mandates on trust, negotiating against humans, and signing regulated opinions someone must be liable for. The job survives; the pyramid beneath it narrows.
AI & The Future →Seven ways into this profession
Frequently asked questions
What does an investment banker actually do?
Is an investment banker the same as a regular banker?
How much do investment bankers earn?
What degree do you need to become an investment banker?
How many hours do investment bankers really work?
What is a pitch book?
Will AI replace investment bankers?
Why do so many analysts leave after two years?
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