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Richard Dennis

Richard Dennis (b. 1949): Chicago's 'Prince of the Pit', from a few hundred dollars to hundreds of millions in commodities. With the Turtles experiment he proved that winning trading can be taught.

On this page

The bet with William Eckhardt: is the great trader born or made? The Turtles experiment (1983–84) answered: made — with the right rules and the right size.
Period b. 1949
Where Chicago pits (MidAm, then CBOT)
Lens Trend following on futures
Key sources Market Wizards (1989); Covel's The Complete TurtleTrader (2007)

Who he is

Portrait — Richard Dennis

Starting at twenty with a small family loan on the minor MidAmerica Exchange, Dennis became within a decade one of the world's greatest commodity traders — the "Prince of the Pit" — with profits estimated in the hundreds of millions through the 1970s–80s. His place in history, though, was secured by a bet: against his friend and partner William Eckhardt, who believed talent innate, Dennis claimed he could train winning traders from scratch. He recruited a class of ordinary people by newspaper ad — the Turtles — taught them a complete system in two weeks and handed them real capital: collectively they generated over one hundred million dollars in profits.

Contribution

  • The proof that method can be taught — the most famous controlled experiment in trading history: written rules + risk management + selection for discipline beat "feel".
  • The Turtle system — Donchian-style channel breakouts, pyramiding in units, stops in volatility multiples (the N, i.e. the ATR), size as a fixed fraction of capital: a complete playbook, now public.
  • Size as the heart of the system — the lesson the Turtles cite most often is not about entries but about position sizing: how much N per unit, how many units per market, how many in total.
  • The human factor isolated — same rules, different results across the Turtles: the residual variable was adherence to the plan. The experiment measured, without meaning to, the weight of discipline.

What today's students learn from him

  1. If a system cannot be written down, it cannot be delegated, tested or improved: the Turtle experiment is the definitive argument for the written plan.
  2. Entries are the least important part: how much you risk per trade decides survival (see risk per trade).
  3. Even with the rules in hand, many will not follow them — selecting yourself is part of the job.

Study path

In preparation — This entry will be extended with the documented Turtle rules (channels, units, correlation limits). The context: discipline-systematic-trading.

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