Public Finance
Mississippi Bubble
The Mississippi Bubble was Europe's first great stock-market boom and bust, engineered in France by the Scottish financier John Law. From 1716 Law built a system that fused a colonial trading company, given a monopoly on French Louisiana, with a state bank that printed paper money to buy its shares. Promoted with promises of Louisiana gold, the shares soared toward 10,000 livres before investors rushed to redeem their paper notes for real coin in 1720 and found there was almost none. The scheme collapsed, ruining investors across Europe, and Law fled France in disguise.
- Company
- Mississippi Company
- Started
- 1716
- Ended
- 1720
- Share price near the peak, up from a few hundred livres
- ~10,000 livres
- Collapse speed
- Sudden
- Preventability
- High
- Lesson transfer
- Universal
- Last reviewed
- 2026-08-03
Narrative
The story
The ambition
France in 1716 was broke. The wars of Louis XIV had left the crown buried in debt and short of the gold and silver coin that money was made of. Into this walked John Law, a Scottish gambler and financial theorist who had fled a death sentence for killing a man in a duel and spent years studying Europe's banks. Law had a radical idea: a country did not need more metal, it needed more money, and paper money backed by the state and by trade could revive a stalled economy. The French regent, out of options, let him try.
The rise
In May 1716 Law founded the Banque Generale, France's first bank of issue, printing paper notes; in 1718 it was nationalized as the Banque Royale. In 1717 he formed the Compagnie d'Occident, the Company of the West, with a monopoly on trade with French Louisiana, the vast Mississippi territory. Over 1718 and 1719 the company swallowed France's other trading companies to become the Compagnie des Indes, took over collecting the nation's taxes, and assumed much of the royal debt, letting bondholders swap government paper for company shares. Law now controlled France's money, its overseas trade, and its debt, and he tied them together into a single machine.
The cracks
The machine ran on belief. Law promoted Louisiana as a land of gold and silver mountains, and the shares climbed in a frenzy, reaching roughly 10,000 livres by early 1720, many times their starting price. To keep the boom going the Banque Royale printed more and more notes so buyers could purchase more shares, so the share price and the money supply inflated each other. But Louisiana was mostly swamp and struggling settlements that produced no riches. Nothing of real value stood behind either the shares or the flood of paper, and the whole structure now depended on no one asking to be paid in actual coin.
The collapse
In January 1720 Law was made controller-general of France's finances, the peak of his power, but the ground was already giving way. Wary investors began converting their paper notes and shares back into gold and silver, and it became clear that France held only a fraction of the specie needed to cover the claims. A decree that tried to manage the descent by cutting the official value of shares and notes by half instead triggered panic. Through 1720 the shares collapsed, the notes lost their worth, and in December the system failed. Investors across France and Europe were ruined, some paupered overnight.
The aftermath
Law fled France in disguise in December 1720, fearing for his life, and died in exile in Venice in 1729, poor. His financial system was dismantled and France, scalded, grew deeply suspicious of paper money and public banks for generations, a distrust some historians link to the country's slower financial development through the eighteenth century. The episode became, alongside Britain's near-simultaneous South Sea Bubble, one of the two founding disasters of modern finance. It showed that paper money and joint-stock companies, the engines of the coming economy, could inflate as easily as they could enrich.
The lessons
The Mississippi scheme was not simply greed; it was a genuine and, in outline, modern idea, paper money and a trading company to revive a debt-choked economy, pushed past the point where anything real supported it. Law's fatal move was to fuse the note-issuing bank, the trading monopoly, and the state's finances under one hand, removing every check: when he needed the shares to rise, he could print the money to buy them. A boom manufactured that way has no natural ceiling and no soft landing, because the only thing holding it up is confidence, and confidence is exactly what vanishes the moment someone asks to be paid in gold. That a colony producing nothing could be valued as a mountain of treasure is the oldest warning in speculation: when the story of future riches outruns any present asset, the gap is not opportunity, it is the bubble.
Causal timeline
Failure Anatomy
- 1716
Law's system
The Scottish financier John Law founded the Banque Generale in May 1716 (nationalized as the Banque Royale in 1718), issuing paper money in a debt-ridden France. [1]
- 1717
The Mississippi Company
In 1717 Law formed the Compagnie d'Occident with a monopoly on French Louisiana; by 1719 it had absorbed the other trading companies into the Compagnie des Indes and taken on the royal debt. [2]
- 1720-01
- 1720-12
The crash
Investors rushing to redeem notes and shares for coin found France short of specie; a decree halving values triggered panic and the system failed in December 1720. [5]
Unsustainable economics - 1720-12
Law's flight
The collapse ruined investors across Europe; Law fled France in disguise in December 1720 and died poor in exile in Venice in 1729, and his system was dismantled. [6]
Structured analysis
What Went Wrong
Root causes
A colony that produced no riches. The Mississippi Company's soaring value rested on promoted promises of Louisiana gold and silver that never materialized, leaving the shares with no real assets behind them. [2] [5]
Paper money propping the shares. The Banque Royale printed ever more notes so investors could buy company shares, so the share price and the money supply inflated one another with no specie behind them. [3] [5]
Contributing factors
One man over bank, company, and treasury. Law simultaneously ran the note-issuing Banque Royale, the trading company, and (from January 1720) France's finances, removing any independent check on the scheme. [3]
Immediate trigger
The rush to redeem. When holders tried to convert notes and shares back into gold and silver in 1720, France held only a fraction of the specie needed, and a decree halving values set off panic. [5]
Visible symptoms
Notes with no metal behind them. The country could not honor more than a fraction of the paper claims in gold and silver, exposing the emptiness under the boom. [5]
Warning signs
Value with no assets. Shares valued in the thousands of livres rested on a colony that was mostly swamp and produced no wealth. [2]
Affected groups
Keep reading
Related failures
Evidence
Claims & sources
Every numbered marker in the analysis links to the claim it rests on, and each claim to its sources.
- [1]
The Scottish financier John Law, who had fled a death sentence for a fatal duel, won control of French finance after 1715, founding the Banque Generale in May 1716 (nationalized as the Banque Royale in 1718) and issuing paper money.
- [2]
In 1717 Law formed the Compagnie d'Occident with a monopoly on trade with French Louisiana; by 1719 it had absorbed France's other trading companies into the Compagnie des Indes and taken over collecting taxes and much of the royal debt.
- [3]
Law's system fused the company with the note-issuing Banque Royale, which printed paper money that investors used to buy shares, monetizing the national debt; in January 1720 Law became controller-general of France's finances.
- [4]
Promoted with promises of Louisiana gold and funded by bank-printed paper, the company's shares soared to roughly 10,000 livres by early 1720, many times their starting price.
- [5]
When investors rushed to redeem their paper notes and shares for gold and silver in 1720, France held only a fraction of the specie needed; a decree cutting share and note values by half triggered panic, and the company and its system failed in December 1720.
- [6]
The collapse wiped out investors across Europe, and John Law fled France in disguise in December 1720, dying in exile in Venice in 1729, his financial system dismantled.
Sources
John Law
Encyclopedia.com · 2004-01-01
Mississippi Scheme
Encyclopedia.com · 2004-01-01
Mississippi Bubble
Encyclopedia.com · 2004-01-01
6 Disastrous Economic Bubbles
HISTORY · 2020-05-13