04 · A wing of the CANDLEWORK network
Traders don't blow up on losses. They blow up on size.
One rule outlives every strategy: risk a small, fixed fraction per trade. The Risk Room makes that concrete — size a position, see the damage a stop caps, and think in R instead of dollars.
Size the trade before you take it
Enter your numbers. Everything updates live and stays on your device — nothing is sent anywhere. This is a math tool, not a recommendation.
Your stop caps the loss on this trade at the risk amount above.
120 simulated runs of 60 coin-flip trades at your risk level — illustrative math, not a prediction. Watch the chasm deepen as risk rises.
Does an edge survive the noise?
Say a pattern really does win slightly more than half the time. Run it a few hundred times against a pure coin flip and watch what happens: small edges hide inside the randomness, and trading costs eat them alive. Set the dials and run it — this is why honest backtesting humbles almost every "signal."
The hidden tax on every trade Pro layer
Your stop and size set your risk. But costs — spread, slippage, fees — quietly tax every single trade, and they compound.
// 01 · The spread
You start every trade at a loss
Buy at the ask, and you could only sell back at the lower bid — you're down the spread the instant you enter.
On a liquid market that's tiny; on a thin one it's brutal. Multiply it across every round-trip and it's a standing tax on activity. This is why overtrading is so corrosive: even with a coin-flip edge, costs turn break-even into a slow bleed.
// 02 · Slippage
Big orders pay to move price
The order book is layered; a large market order eats through levels and fills worse.
That gap between expected and actual fill is slippage, and the price you shove is market impact. It spikes in fast markets and around news. Defences: limit orders (price control, at the cost of maybe not filling), sizing to the market's real liquidity, and trading when depth is greatest. Often missing a trade beats a bad fill.
▸ Educational. Costs vary by broker, venue, and market — model your own before assuming an edge survives them. Not trading advice.
Think in R, survive the streak
Fixed fractional
Small, constant risk
Risking a fixed 0.5–2% per trade means a losing streak bruises but never breaks you — position size shrinks automatically as the account does.
The R-multiple
One shared unit
Define 1R1R — one unit of risk: the distance from your entry to your stop-loss. Once defined, every trade is measured in R — a +2R win, a −1R loss — no matter the instrument or price. as the distance to your stop. Now every trade speaks the same language: a +2R win, a −1R loss. Dollars distract; R clarifies.
Drawdown math
Losses cost more to recover
Down 50% needs +100% to get back. Capping loss size isn't caution for its own sake — it's the arithmetic of staying in the game.