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Everyone knows Warren Buffett. He is the Oracle of Omaha, the folksy billionaire who drinks Cherry Coke and dispenses wisdom at annual meetings like a financial Buddha. Entire libraries exist about his methods. MBA students can recite his letters to shareholders the way seminary students recite scripture.
But almost nobody knows William Duer. And that is exactly why you should study him.
Duer was the first great American financial disaster. Before the country had a central bank, before it had a stock exchange, before it even had a proper currency system, Duer managed to engineer a speculative bubble so reckless that it nearly destroyed the fledgling American economy in 1792. He did not just lose his own money. He dragged half of New York down with him.
If Buffett teaches you how to build wealth, Duer teaches you how wealth actually gets destroyed. And that second lesson might be more valuable than the first. To never lose money is Buffet’s first rule after all.
The Man Who Bet Against a Nation
William Duer was not some fringe gambler operating out of a tavern. He was an insider. A member of the Continental Congress. A friend of Alexander Hamilton. He served as the first Assistant Secretary of the Treasury, which meant he had access to information that no other speculator in the country could touch.
He used every bit of it.
When Hamilton began restructuring the nation’s debt after the Revolutionary War, Duer saw opportunity everywhere. The new federal government was assuming state debts and issuing new securities. Duer started buying these government bonds aggressively, often using borrowed money, often using information he had gained from his government position. Today we would call this insider trading. In the 1790s, they just called it ambition.
But bonds were not enough for Duer. He also began speculating on shares of the Bank of New York and the Bank of the United States. He formed secret partnerships. He borrowed from wealthy merchants and from working class people alike, promising extraordinary returns. He created a web of obligations so tangled that even he could not keep track of who owed what to whom.
He was, in essence, running one of America’s first leveraged speculative operations. And for a while, it worked beautifully.
The Architecture of a Collapse
Here is where Duer becomes genuinely instructive for modern investors.
His strategy depended on a single assumption: that prices would keep rising. Every loan he took, every partnership he formed, every promise he made was built on the belief that tomorrow’s price would be higher than today’s. He was not investing in value. He was investing in momentum. And momentum, as any physicist will tell you, is not a force. It is a condition that disappears the moment the force behind it stops.
In early 1792, the force stopped.
Credit tightened. Some of Duer’s lenders wanted their money back. He could not pay them because he had already used their money to take on more positions. So he borrowed more to cover the earlier debts. This is the financial equivalent of digging a deeper hole to climb out of the one you are already in.
By March, the entire scheme unraveled. Securities prices collapsed. People who had lent Duer money panicked and started demanding repayment from everyone they had lent to, not just Duer. The contagion spread through New York’s merchant class like a virus through a crowded room. Shopkeepers, widows, laborers, and wealthy traders all found themselves holding worthless promises.
Duer was thrown into debtors prison, where he would remain for the rest of his life. He died there in 1799, still owing money to people who would never see a cent of it.
What Buffett Cannot Teach You
The financial education industry has a survivorship bias problem. We study the winners obsessively. We read books about people who made fortunes and try to reverse engineer their success. But we spend almost no time studying the people who caused catastrophes, even though catastrophes reveal far more about how markets actually function.
Buffett’s lessons are real and useful. Buy quality companies. Think long term. Be greedy when others are fearful. These are sound principles. But they assume a certain kind of investor operating in a certain kind of environment. They assume rationality, patience, and discipline. They assume you are the kind of person who can sit still while the world burns.
Most people are not that person. Most people are much closer to William Duer than they are to Warren Buffett.
Duer teaches you what happens when leverage meets overconfidence. He teaches you what happens when insider access creates a false sense of certainty. He teaches you what contagion looks like before anyone has given it a name. These are not abstract lessons. They replay constantly.
The Panic of 1792 was not a one time event. It was a template.
The Panic as a Pattern
Look at the basic structure of Duer’s collapse and then look at virtually any financial crisis since. The ingredients are almost always the same.
Someone with access, credibility, or both begins taking outsized risks. They use borrowed money to amplify their bets. They attract followers who trust them because of their position rather than their logic. The early returns validate the strategy, which attracts more money, which drives prices higher, which validates the strategy further. A beautiful, self reinforcing loop that looks like genius right up until the moment it becomes rubble.
The South Sea Bubble in 1720 had this structure. The railroad manias of the 1800s had this structure. The 1929 crash had this structure. Long Term Capital Management in 1998 had this structure. The mortgage crisis in 2008 had this structure. The crypto collapses of 2022 had this structure.
Duer did not invent this pattern. But he was one of its earliest and purest American expressions. Studying him is like studying the original source code of a bug that keeps crashing the system.
The Insider Problem
One of the most uncomfortable lessons from Duer’s story is about information asymmetry. Duer did not succeed initially because he was smarter than everyone else. He succeeded because he knew things other people did not. His time in the Treasury gave him a map of the financial landscape that no one else possessed.
This should sound familiar. Every era has its version of the insider advantage. In the 19th century, it was railroad barons who knew where the tracks would go. In the 20th century, it was corporate executives who traded on earnings data before it was public. In the 21st century, it is algorithmic traders who can see order flow milliseconds before everyone else, or venture capitalists who get into deals years before retail investors hear about them.
Duer reminds us that the playing field has never been level. And expecting it to be level is itself a form of financial risk.
Contagion and the Myth of Contained Risk
Perhaps the most relevant lesson from 1792 is about contagion. Duer did not just hurt himself. He hurt people who had never heard of him.
When his scheme collapsed, the damage radiated outward through chains of credit and obligation. A merchant who had lent money to Duer could not pay the supplier who had extended him credit, and that supplier could not pay the farmer who had sold him goods. The entire chain of economic relationships seized up because one node in the network failed.
This is exactly what happened in 2008, just on a vastly larger scale. The subprime mortgage market was supposed to be a contained risk. Isolated. Manageable. It was none of those things because financial systems are not collections of independent parts. They are networks. And in networks, failure does not stay local.
Why Failure Deserves a Curriculum
There is something deeply human about our preference for success stories. We want to believe that studying the right people and following the right principles will protect us. It is comforting. It sells books and courses and newsletter subscriptions.
But comfort is not education. And protection built on optimism alone is not protection at all.
The ancient Stoics had a practice called premeditatio malorum, the premeditation of evils. Before any significant undertaking, they would deliberately imagine everything that could go wrong. Not to become pessimists, but to become prepared. They understood that the person who has rehearsed failure is less likely to be destroyed by it.
Studying William Duer is the financial version of this practice. It is not pleasant. There is no triumphant arc, no inspirational quote to put on a coffee mug. A man gained power, abused it, destroyed others, and died in prison. The story is ugly and instructive in equal measure.
But that is precisely the point. The ugly stories are where the real operating manual for markets lives. The beautiful stories are where the marketing lives.
The Uncomfortable Conclusion
Here is the part that most financial content will not tell you. Warren Buffett is an outlier so extreme that using him as a model for ordinary investing is a bit like using Michael Phelps as a model for learning to swim. You will pick up some useful techniques. But you are not going to become Michael Phelps, and pretending otherwise might lead you to jump into water that is too deep.
William Duer, on the other hand, represents something universal. The temptation to use leverage. The seduction of insider knowledge. The belief that this time, the music will not stop. The inability to see that your risk has become everyone’s risk. These are not historical curiosities. These are permanent features of financial markets because they are permanent features of human psychology.
You do not need to admire Duer to learn from him. In fact, you should not admire him at all. But you should know his name. You should know what he did and why it mattered. You should understand that the Panic of 1792 was not some quaint episode from a simpler time. It was the dress rehearsal for every financial crisis that followed.
Study Buffett for inspiration. Study Duer for survival.
One of them will make you feel good about investing. The other might actually keep you from losing everything.
