“Risk management is the most important thing to be well understood. Undertrade, undertrade, undertrade. Whatever you think your position ought to be, cut it at least in half.”
It was the late 1970s, New York City.
Bruce Kovner was struggling. Only around five years earlier, his mother died. Not from natural causes; suicide.
He used to want to be a political campaigner, writer, and musician. Harvard gave him a scholarship for their PhD program in political economy. He dropped out.
He failed as a political campaigner. Then he failed as a writer. Music was another passion.
He enrolled in Juilliard’s evening piano classes. He studied harpsichord.
But he needed side jobs to survive. He had to pay rent for a tiny apartment while pursuing passions.
So he started driving a cab on night shifts.
It became his main income source.
The US national debt was at its highest levels since the Great Depression. There was an ongoing oil crisis and fuel shortages. The economy was stagnant and inflation was high (stagflation).
It was a macro low point for the world economy and a personal low point for Bruce Kovner.
But that’s what led to his personal breakthrough.
Bruce Stanley Kovner (born February 25, 1945): American billionaire investor, hedge fund manager, and philanthropist. Founder of Caxton Associates.
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For speculators in the commodities market, this era was a once in a lifetime opportunity.
Bruce became obsessed with commodity trading in 1977.
While still scraping by as a cabbie, he maxed out his $3,000 MasterCard limit on soybean futures. The position surged to $40,000-$45,000.
Then it crashed.
He sold at $23,000 profit after a market halt.
In only 30 minutes, half his profits vanished.
The stress made him sick.
“I was sick for a week. But it was the best thing that happened to me. It taught me risk.”
Most business owners struggle with the hidden tax of reckless risk.
They make it too personal.
They let ego and emotion turn every decision into a referendum on their worth.
They use oversized bets on “sure things,” praying the market will bail them out.
They cling to losers, doubling down instead of admitting the trade is dead.
Kovner almost ruined his entire early stake on a single soybean futures position.
That was close to an 8X return, which could have been worse.
The lesson? Merciless undertrading.
From that point on he cut every position in half, never risking more than 1–2%.
Most investors overtrade and risk 5–10% (or more) on a single bet.
They treat the market like a casino where bigger stakes mean bigger glory.
Kovner did the opposite.
He predefined his exit before ever entering.
He walked away the instant his emotional equilibrium cracked.
He turned a $3,000 credit-card soybean futures gamble into a lesson in defense-first living.
Most rookie traders blew up their accounts.
Bruce continued to trade and grow his personal account.
He demonstrated his skill and discipline.
His unorthodox success caught the eye of Michael Marcus.
Marcus was a rising star at Commodities Corporation.
He gave Bruce a shot and hired him as a junior desk assistant.
Remember, Bruce had no professional experience and no qualifications.
Yet he posted annual returns of almost 80%.
Bruce already invested thousands of hours reading about commodities. Now his obsession finally paid off.
In 1983, he branched out on his own and founded Caxton Associates.
He learned how to preserve capital. And he became relentless about it.
So relentless that his Caxton fund delivered 21%+ average annual returns for decades.
Caxton Associates became one of the world’s top hedge funds.
Kovner built Caxton into a firm that peaked at managing over $14 billion in assets.
Kovner retired as CEO in 2011.
Post-retirement, Kovner chairs CAM Capital, his family office. His philanthropic entity is the Kovner Foundation, established in 1996. Bruce Kovner’s estimated net worth as of early 2026 is around $8.6 billion.
Refusal to gamble his peace of mind. That’s what built his $8.6 billion fortune from a taxi cab.
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