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R-multiples before you size up

A dollar equity curve after a size increase overweights later, larger trades. R-multiples and expected value keep strategy health independent of dollar size, and a written size-up plan waits for a stated profit level over a minimum time.

  • A dollar equity curve after a size increase overweights later, larger trades and can hide whether earlier, smaller trades were still healthy.
  • R-multiples and expectancy measure strategy health independently of the dollar size used on each trade.
  • Recording R-multiples from the first trades, before any size-up, keeps later sizing decisions from rewriting the performance record.
  • Raising size all at once is described as the most common sizing error. A written plan can require a prescribed increase only after a stated profit level over a minimum time, instead of after a single strong day.
Entries in this reading2 entries
Current trackVolatility position sizing57 readingsExpected value61 readings

Dollar curves after a size increase

A dollar equity curve after a size increase overweights later, larger trades and can hide whether earlier, smaller trades were still healthy. R-multiples and expectancy measure strategy health independently of the dollar size used on each trade.

R-multiples keep the record honest

An R-multiple is a trade result divided by the planned risk on that trade, so small and large sizes can be compared on the same scale. Expected value is the average outcome per unit of risk, used as a sizing-independent filter of whether a strategy still pays for the risk it takes. Recording R-multiples from the first trades, before any size-up, keeps later sizing decisions from rewriting the performance record.

Bound the loss before you raise size

Volatility position sizing is a pre-entry rule that sets trade size from account equity, current volatility, stop distance and allowed exposure so a single loss stays inside a planned bound.

TradersWeek editorial: that bound is the first risk decision. A later size-up is a separate decision, judged by whether expected value in R still pays for the risk taken.

Write the size-up plan

Raising size all at once is described as the most common sizing error. A planned increase over days or weeks is the alternative offered. A written size-up plan can require a prescribed increase only after a stated profit level over a minimum time, instead of after a single strong day. A size-up milestone is a prewritten profit, time and drawdown test that must be met before risk per trade is increased.

Educational research material, not investment advice. Historical source context does not establish present-day performance.
25 of 25 in the Volatility position sizing track
1988Track finished · Next track: ATR position sizingConstructing unsigned true range for directional models72 readings
All readings on this track · 25 readings
  1. 1988Two-sided optimization for volatility-scaled breakout rules
  2. 1990Weekly range volatility as a tactical regime filter
  3. 1993Heat first, then contract count on a weekly close-only breakout
  4. 1994Shared sigma for trend entries, retests and stops
  5. 1995The promised result as one testable trading procedure
  6. 2001Convert a survival ceiling into a volatility filter
  7. 2002Bound the next loss before the bear trade
  8. 2004Dollar-loss tolerance versus percent-of-equity stops
  9. 2004Bounded risk before entry: stop, size, and leverage
  10. 2006Position sizing as the pre-trade bound on loss and exposure
  11. 2006A trend-regime matrix for volatility position sizing
  12. 2011A premarket range checklist for opening-hour breakouts
  13. 2011Stop-defined share count on a clustered intraday short
  14. 2012Mechanical system design with strategy, signals, and size
  15. 2012Precommit size before a one-day policy shock
  16. 2013R-multiple expectancy, drawdown, and volatility position sizing
  17. 2014Constructing trend-aware slope-divergence rules
  18. 2014Pretrade drawdown fences and volatility sizing
  19. 2015Convert pip value into cash before a forex lot size is chosen
  20. 2016Expectancy as an execution skill rather than a backtest score
  21. 2017Volatility parity equalizes the ticket; implied volatility is a regime dial
  22. 2018Wide-range breakout rules from chart volatility
  23. 2019A structure-based stop, then resize or pass
  24. 2020A cash rule that zeros a trend book on extreme volatility and a short losing window
  25. 2025R-multiples before you size up
By fieldSizing and leverage109 readingsBy year20256 readings
All 57 readings tagged Volatility position sizing
Also on Volatility position sizing5 readings
2001A runs test before volatility and expected-value sizing2003Share size from daily profit equilibrium2006Position sizing as the pre-trade bound on loss and exposure2013R-multiple expectancy, drawdown, and volatility position sizing2013Weekday, session, and market expectancy for contract size