The Mississippi Company was at the center of the Mississippi Bubble, one of the major financial crashes of 1720.
The company held a French monopoly over trade and development connected with Louisiana, then a vast French colonial territory in North America. Scottish financier John Law reorganized it and promoted its shares as part of a broader plan to manage France’s finances and replace government debt with company stock.
Speculation drove the share price to extraordinary levels in 1719 and early 1720. Investors bought shares using credit, attracted by promotional claims about the wealth of Louisiana and the company’s commercial prospects. The market could not sustain those expectations, and confidence collapsed when holders tried to convert paper wealth into money.
The resulting crash damaged Law’s financial system and forced him to flee France. The Mississippi Bubble is often discussed alongside Britain’s South Sea Bubble, which also collapsed in 1720, but the two companies and national schemes were separate.