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Risk and position sizing

Pyramiding Calculator

Adding to a winner is only pyramiding if the total risk does not grow. Enter both entries and the new stop to see whether it did.

The original position

What you are adding

Risk after adding—
Risk before adding—
Average entry—
Total units—
Locked-in result if the new stop is hit—
Change in risk—

A correct pyramid raises size and the stop together, so the total risk stays flat or falls while exposure grows. If the risk figure goes up when you add, you have not scaled into a winner — you have opened a second, larger trade at a worse price.

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The test

average entry = (units₁ × price₁ + units₂ × price₂) ÷ total units
risk after    = |average entry − new stop| × total units

Compare that against the risk you had before. A correct pyramid leaves it flat or lower.

10,000 units at 1.0850 with a stop at 1.0800 risks $50. Adding 5,000 at 1.0910 gives an average of 1.0870 across 15,000 units. With the stop raised to 1.0870, the risk is $0 — the position is free and three times the original size in exposure.

Leave the stop at 1.0800 instead and the risk becomes $105. That is not pyramiding. That is a larger trade at a worse average price, and the fact that it is currently in profit does not change the arithmetic.

Why the stop must move with the size

The two things have to travel together. Size up without moving the stop and risk grows linearly with the addition; the position is now betting more on the same idea, at a price that is less favourable than the original entry.

The version that works: each addition is accompanied by a stop that has moved far enough to keep total risk at or below the original figure. Done properly, a trend position can end up several times its starting size while never risking more than 1% of the account at any point — and can eventually risk nothing, having locked in the original entry's profit.

The calculator turns red when risk went up, because that is the only failure mode that matters here and it is invisible while the trade is winning.

Pyramiding is not averaging down wearing a different word

They look symmetrical and are opposites.

Pyramiding adds to a position that is right, on a stop that is moving in your favour. Each addition is funded by profit that already exists.

Averaging down adds to a position that is wrong, usually with no predetermined limit. Each addition increases exposure to a thesis the market is currently disagreeing with.

The arithmetic of the average price is identical. The direction of the evidence is not, and that is the whole difference.

Two practical constraints

Additions should shrink. Adding the same size each time makes the average creep towards the latest price, so a normal retracement takes out a position that was deeply profitable. Halving each addition keeps the average close to the original entry.

Liquidity and slippage compound. A position built in four pieces pays four spreads and four commissions, and the later entries are often taken in faster conditions. On a small stop that cost is a meaningful share of what the pyramid is meant to earn.

FAQ

What is pyramiding in trading?

Adding to a position that is already profitable while raising the stop, so that exposure grows without total risk growing. It is the mechanism behind trend-following returns, where most of the profit comes from a small number of large positions built over time.

Does adding to a winner increase my risk?

Only if the stop does not move enough. Compare the risk before and after: if the figure rose, the addition was not funded by existing profit and the position is now larger than the plan allowed.

How much should I add each time?

Smaller than the previous tranche — halving is a common rule. Equal additions pull the average entry towards the current price, which turns an ordinary pullback into a stop-out on a trade that was working.

When should I stop adding?

When the stop can no longer be raised enough to keep total risk flat, or when the position size exceeds what you would accept as a single trade. Both are limits worth setting before the first addition.

Is pyramiding the same as scaling in?

Scaling in usually means building a planned position in pieces around one entry area, regardless of direction. Pyramiding specifically adds after the trade has moved in your favour and pairs each addition with a stop that has moved too.

This is the plan. What did you actually do?

A calculator tells you the size you should have taken. It cannot tell you the size you took at 2pm after two losers, or how often your stop moved once price went against you. Drop in a statement from MT4/MT5, a broker CSV or a crypto export and see the answer for your own last 90 trades.

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