Investment Banker History: From the Medici to Lehman

Investment banking's history is a chain of answers to one question: who is trusted to move very large sums of other people's money? Medieval Europe answered with Italian merchant families, whose bills of exchange moved fortunes across borders while technically sidestepping the Church's ban on charging interest. Every later era — Amsterdam's shareholders, London's bond houses, New York's underwriting syndicates — rebuilt the same trust machinery with new instruments.

The trade has also been repeatedly reshaped by its own disasters. Sovereign defaults destroyed Florence's greatest banks in the 1340s, the crash of 1929 brought the regulation that defined the industry for fifty years, and the collapse of Lehman Brothers in 2008 ended the standalone investment bank as a business model. Each failure redrew the boundary between what bankers may do and what someone else must watch them doing.

Where it began

14th centuryFlorence & the Italian city-states

Florence's merchant "super-companies" — above all the Bardi and Peruzzi houses — invented much of the toolkit: branch networks across Europe, the bill of exchange that moved money and disguised interest as currency exchange, and lending at sovereign scale. Their signature deal was also their ruin: enormous war loans to England's Edward III, which the chronicler Giovanni Villani valued at well over a million gold florins, went unpaid in the 1340s, and both houses collapsed. The Medici Bank, founded in 1397, learned the lesson and spread its risk across semi-independent branches with local partners.

Timeline

1343–46Edward III breaks Florence's super-banks

England's Edward III defaulted on the colossal war loans that Florence's Bardi and Peruzzi banks had extended to fund his campaigns against France. The Peruzzi failed in 1343 and the Bardi by 1346, taking much of Florence's economy down with them — the first great demonstration that lending to sovereigns is the most dangerous business in banking.

1397Giovanni de' Medici founds the Medici Bank

Giovanni di Bicci de' Medici moved his operation from Rome to Florence and built the century's dominant bank on a decentralized structure: branches from London to Naples run by local partners who shared profits and liability. As banker to the papacy, the Medici Bank turned financial services into political power that eventually made the family dukes and popes.

1519Jakob Fugger buys an imperial election

When the Holy Roman Empire's crown came open, Augsburg banker Jakob Fugger raised roughly 850,000 florins — more than half from his own house — to pay the seven electors to choose Charles V over Francis I of France. It remains history's clearest case of a banker openly financing the purchase of supreme political office.

1602The first publicly traded shares

The Dutch East India Company (VOC) was chartered with permanent capital subscribed by the public, and its shares immediately began trading in Amsterdam — the world's first stock in the modern sense. The secondary market that grew around it created the template every later exchange, underwriter and IPO would follow.

1815Rothschild's information network beats the government

Nathan Mayer Rothschild learned of Wellington's victory at Waterloo roughly a day before the British government, via his family's private courier network, and informed the Treasury. The five Rothschild brothers, placed in London, Paris, Frankfurt, Vienna and Naples, went on to dominate European sovereign lending for half a century — the first truly multinational investment house.

1907Morgan's library rescue

With no central bank in existence and New York's trust companies collapsing, 70-year-old J. Pierpont Morgan locked the city's leading bankers inside his private library on the night of 2 November 1907 until, at 4:45 a.m., they signed a $25 million rescue. Congress decided no private citizen should hold that power again and created the Federal Reserve in 1913.

1933Glass–Steagall splits the Street

After the Pecora hearings exposed 1920s underwriting abuses, the Glass–Steagall Act forced American banks to choose between deposits and securities. J.P. Morgan & Co. chose commercial banking, and in 1935 a group of its partners left to found Morgan Stanley — the moment "investment bank" became a distinct legal species that lasted 66 years.

1963Warburg invents the Eurobond

S. G. Warburg & Co. lead-managed a $15 million bond for Autostrade, Italy's state motorway operator — issued outside any single country's system, listed in Luxembourg and structured to sidestep both British stamp duty and America's new interest-equalization tax. The offshore capital market it opened now measures in the trillions of dollars.

1986Big Bang deregulates the City

On 27 October 1986, London abolished fixed commissions, ended the centuries-old separation of brokers and jobbers, and opened Stock Exchange member firms to foreign ownership. American and European banks bought up the City's partnerships within a few years, turning London into the hub of global capital markets and exporting the US banking model worldwide.

2008Lehman falls and the model ends

Lehman Brothers filed the largest bankruptcy in US history on 15 September 2008, with some $600 billion in assets; Merrill Lynch sold itself to Bank of America the same weekend. Within a week, Goldman Sachs and Morgan Stanley converted to regulated bank holding companies — ending the era of the large standalone investment bank.

The eras

The Medici family's coat of arms, emblem of Renaissance Europe's most powerful bank. — Heralder · CC BY-SA 3.0 · Wikimedia Commons

1300 – 1600

Merchant princes of Italy and Augsburg

The Church's usury ban made openly charging interest a sin, so Italian merchant bankers engineered around it: the bill of exchange bundled a loan, a currency trade and a fee into one instrument that moved money from Florence to the Champagne fairs and London. The Medici built Europe's most powerful bank on papal accounts and branch partnerships, and Augsburg's Fugger family surpassed them, financing Habsburg emperors and taking silver and copper mines as collateral — sovereign lending, project finance and political risk in their earliest recognizable forms.

The courtyard of the old Amsterdam exchange, the world's first modern stock market. — Bybbisch94, Christian Gebhardt · CC BY-SA 4.0 · Wikimedia Commons

1600 – 1860

Amsterdam, London and the age of bonds

The Dutch East India Company's shares gave Amsterdam the first modern capital market, complete with speculators, short sellers and crashes. Leadership passed to London in the 1700s, where merchant banks — Barings from 1762, the Rothschilds from the Napoleonic Wars — underwrote the government debt that funded a century of war and empire. The Duc de Richelieu is credited with the era's defining remark: that Europe's six great powers were Britain, France, Prussia, Austria, Russia and Baring Brothers.

Portrait of J. Pierpont Morgan, the dominant American financier of the Gilded Age. — Unknown author Unknown author · Public domain · Wikimedia Commons

1860 – 1933

The great houses and the money trust

American railroads were the century's capital-hungriest projects, and the bankers who financed them became the country's most powerful private citizens. Jay Cooke pioneered mass retail bond distribution to fund the Union side of the Civil War; J. Pierpont Morgan reorganized bankrupt railroads so thoroughly the process was called "Morganization," and in 1901 assembled U.S. Steel, the first billion-dollar corporation. The 1912 Pujo hearings named the fear this concentration inspired: a "money trust" controlling American industry from a few Wall Street desks.

The narrow canyon of Wall Street, heart of the regulated postwar securities industry. — Ajay Suresh · CC BY 4.0 · Wikimedia Commons

1933 – 1986

The regulated Street and the syndicate era

Glass–Steagall and the new Securities and Exchange Commission caged the industry: investment banks became partnerships trading on relationships, tombstone advertisements and league-table rank. The era's innovations came at the edges — Siegmund Warburg's 1963 Eurobond opened an offshore market beyond any regulator's full reach, and London's merchant banks pioneered the hostile takeover. On 1 May 1975, the SEC abolished fixed brokerage commissions, and the genteel, capital-light Wall Street partnership began its slide toward extinction.

The Lehman Brothers headquarters in New York, emblem of the 2008 collapse. — David Shankbone · CC BY-SA 3.0 · Wikimedia Commons

1986 – present

Big Bang, globalization and the fall of the partnership

London's 1986 Big Bang and America's 1999 repeal of Glass–Steagall dissolved the old boundaries; Goldman Sachs's 1999 IPO ended the last great Wall Street partnership, moving the risk from partners' own capital to public shareholders. The 2008 crisis destroyed or absorbed three of the five US bulge-bracket firms in a single year. Since then the advisory business has migrated toward independent boutiques, the capital toward private markets, and the junior workload — steadily — toward software.

What this job replaced

Neighbouring trades that no longer exist — absorbed, automated or regulated away.

Stockjobber

c. 1690–1986

For nearly three centuries, London split its market in two: brokers dealt with the public, and jobbers — wholesalers standing at pitches on the Exchange floor — quoted them two-way prices, never dealing with outside clients directly. Daniel Defoe was already denouncing "the villainy of stock-jobbers" in 1701. The Big Bang of 27 October 1986 abolished the broker–jobber separation overnight, and the trade vanished into the dealing desks of the banks that bought the old firms.

Discount-house bill broker

c. 1825–2000

London's discount houses were a unique species: firms whose partners walked the City in top hats, borrowing banks' spare cash overnight and using it to discount trade bills, sitting formally between the banking system and the Bank of England. For over 150 years they were the channel through which the Bank steered interest rates. Reforms to money-market operations in the 1980s and 1990s dissolved their privileged role, and the last discount houses closed or converted around 2000.

NYSE floor specialist

1872–2008

Born, by Exchange legend, when a broker who had injured his leg in 1875 stayed at one post trading a single stock, the specialist system gave one firm the franchise — and the obligation — to make a continuous market in each NYSE-listed share from a fixed spot on the floor. Electronic trading eroded the role for years before the NYSE formally replaced specialists with "designated market makers" in 2008, ending 130 years of single-stock stewardship.

Trades that vanished →

Seven centuries in, the industry's product is still what it was in Florence: trusted intermediation at scale. The instruments changed — bills of exchange, sovereign bonds, shares, Eurobonds, leveraged loans — but every era's core franchise has been a name that both sides of an enormous transaction believe.

The pattern in the disasters is equally constant. The Bardi trusted a king, 1929's syndicates trusted the market, Lehman trusted its own balance sheet; each collapse produced the next era's rules. Whatever form the next crisis takes, the safest prediction in finance is that it will redraw this profession's boundaries again.

💹Origins & Evolution

Where it began

Timeline