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Victor Niederhoffer: the genius who blew up twice

On 27 October 1997, the Dow fell more than 7% in a day. By the next morning, one of Wall Street's most admired traders had lost his fund. Ten years later, it happened to him again.

Story · 7-minute read · Updated 2026-10-21

Who he was

Victor Niederhoffer was born in Brooklyn, New York, on 10 December 1943. His father was a police officer who later became a professor.

He was a brilliant student and athlete. He went to Harvard, graduating in 1964, and won national titles in squash. He later earned a PhD at the University of Chicago and taught at the University of California, Berkeley.

He was one of the first people to use computers to study price data for patterns. In the 1980s he traded for, and alongside, the investor George Soros. By most accounts, his track record through the 1980s and early 1990s was among the best in the business.

What happened

Early 1997. He published a memoir, The Education of a Speculator. It was widely praised. He was at the top of his reputation.

Summer 1997. The Asian financial crisis began in Thailand. Niederhoffer had a big bet that Thai bank shares would recover. They kept falling. By most accounts, he lost about $50 million there in August.

Autumn 1997. To make the money back, he leaned more heavily on a trade he'd used for years: selling "put" options on the US stock market.

Selling a put is like selling insurance. You collect a small payment, called a premium, up front. If the market stays calm or rises, you keep it. If the market falls sharply, you owe the buyer a lot, and the loss can be many times the premium you collected.

27 October 1997. The Dow fell 554 points, about 7.2%. The New York Stock Exchange halted trading. Niederhoffer's broker demanded more cash, a Margin call. He couldn't meet it. His positions were closed out and the fund was wiped out. Accounts of the exact amount vary.

He had to mortgage his house and sell much of his famous silver collection, by his own account.

1998–2006. He rebuilt, trading for others again. He wrote another book, Practical Speculation, with Laurel Kenner in 2003. By early 2007, by most accounts, his new fund had strong recent results.

2007. The subprime crisis began. His fund was again leveraged. Large losses hit in August 2007, and the fund was closed. It was the second blowup of his career.

The moment everyone remembers

It's 27 October 1997. A man who had studied markets more carefully than almost anyone, who had written a book about it that year, was wiped out in a single afternoon.

What makes it a lesson is the trade itself. Selling puts made money most days, for years. It felt safe because it usually worked. The danger was hidden in the rare day when the market fell hard and fast.

His intelligence wasn't the problem. The shape of his risk was.

What it teaches

1. "Usually works" isn't the same as "safe"

A trade that wins small most days and loses huge on rare days can look brilliant for years. Then one day undoes it all.

Ask of every method: what does its worst day look like? If you can't answer, the method isn't finished. See risk-of-ruin and risk-reward ratio.

2. Chasing losses multiplies them

The 1997 collapse began with one big loss in Thailand. The urge to win it back pushed him into bigger, riskier positions.

That urge has a name: revenge trading. A daily loss limit is the cure, decided while you're calm. Ours: 2 losing trades and you're done for the day.

3. Leverage turns a bad day into the last day

Without borrowed money, October 1997 would have been a painful loss. With it, it was the end of the fund.

Read leverage and margin explained before using either. Know exactly where your broker would close you out.

4. Every position needs a defined maximum loss

Selling options "naked," without anything to cap the loss, has no fixed limit. A Stop loss doesn't always protect you either in a crash, because prices can jump past it.

That's why the safest protection is size. Keep each trade a small slice, about 1%. Try the position size calculator.

What it doesn't mean

It doesn't mean options are evil. Many people use options carefully, with defined risk. The danger was selling them with no cap, on borrowed money, in large size.

It doesn't mean study is pointless. His research was real and influential. It's that being clever doesn't stop a rare event from happening.

And it doesn't mean his whole career was a failure. He was a champion athlete, a respected scholar and, for long stretches, a highly regarded trader. The lesson is how fast all of that can be put at risk by one kind of trade.

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