Anti-Martingale Calculator

How the Anti-Martingale ladder is calculated

The Anti-Martingale convention used here increases the next raw lot only after a target-hit trade. The base row represents the starting order or the reset after a stopped trade. Each later row multiplies the base lot by the entered win multiplier raised to the number of prior illustrated wins.

The engine rounds each raw lot down to the entered broker step. This is important because a 1.5 multiplier applied to 0.15 lot produces 0.225 lot, which cannot be submitted on a 0.01 step without normalization. The calculator uses 0.22 rather than silently rounding up and risking more than the raw ladder requested.

Trade stop loss equals rounded lot multiplied by stop pips and pip value per 1.00 lot. Gross target gain multiplies that stop amount by the entered target-to-stop ratio. Cumulative winning-streak gain adds the target result from every illustrated successful row before the current one.

For each row, net after next loss equals earlier cumulative winning-streak gain minus that row’s stop loss. The current row’s target gain is not counted when the row is modeled as the losing trade. This separates earned gross streak gains from the amount exposed on the next increase.

The page keeps starting equity as a fixed denominator so risk growth is visible across rows. It also shows account equity after the current row loses, assuming all earlier displayed rows hit their targets. It does not compound lot size from the changing equity unless the entered multiplier happens to recreate that rule.

Worked example from the audited fixture

The audited example starts at 0.10 lot, multiplies by 1.5 after each target for five rows, rounds down to a 0.01 broker step, uses a 25-pip stop, a pip value of 10, a 2R gross target and 10,000 starting equity.

1. The displayed lots are 0.10, 0.15, 0.22, 0.33 and 0.50. Their stop-loss amounts are 25, 37.50, 55, 82.50 and 125, while gross target gains are 50, 75, 110, 165 and 250.
2. If all five rows reach their targets, gross cumulative streak gain is 650 before costs. If the fifth row instead loses after the first four targets, the sequence retains 275 before costs because 400 earlier gross gain minus the fifth row’s 125 stop equals 275.

Reproduce it: select “Load audited example” above. The governed fixture was independently recomputed with decimal arithmetic, and the interface rounds only displayed values.

How to interpret the result

• Read the next-trade stop-loss column before focusing on cumulative wins. The open risk grows even when the prior sequence is profitable.
• A positive net-after-next-loss amount does not make the next trade risk-free. It only compares one hypothetical loss with earlier gross gains; the starting account still bears execution and model risk.
• Broker rounding can flatten or distort early steps. A small multiplier may produce repeated normalized lots before the next step boundary is reached.
• The maximum-lot warning identifies the first displayed order above the entered per-order maximum. It does not verify whether smaller rows fit free margin or aggregate symbol limits.
• Anti-Martingale differs from pyramiding an open trade. This page assumes one trade closes at its target before the next trade begins; it does not add to a simultaneously open winner.
• Compare the output with fixed-lot sizing by setting multiplier to one. That changes the arithmetic baseline without creating a separate duplicate calculator page.

Assumptions and limits

• The illustration assumes consecutive target hits followed, when inspected, by one full stopped trade. Partial wins, breakeven exits, trailing stops and variable outcomes are excluded.
• Win rate, streak probability, serial dependence, changing market regimes and uncertainty in the entered payoff ratio are not estimated.
• All rows use the same stop pips, pip value and target ratio. The page does not update values from live prices or broker symbol data.
• Spread, commission, swap, slippage, gaps, rejected orders and taxes are excluded. Those costs can materially change small target gains.
• The model is sequential. It does not calculate a pyramid of simultaneously open positions, a basket stop, grid liquidation or netted-account margin.
• No multiplier, step count, risk percentage, stop, target, reset rule, strategy, EA parameter, signal or trade is recommended.

Sources and methodology

• MetaQuotes — permitted trading volumes — Official specification for broker lot minimum, maximum, step and aggregate directional limit.
• MetaQuotes — OrderCalcProfit — Official reminder that monetary trade results depend on symbol, volume, direction and price context.
• OKX — amount multiplier example — Official geometric order-amount example used only to cross-check progression indexing, not to transfer crypto product assumptions into forex.

Version 1.0.0 performs deterministic local arithmetic and uploads no entered values. The audited examples were recomputed from first principles with decimal arithmetic. External product documentation is used only to define explicit fields and broker constraints; no platform outcome, backtest or profitability claim is imported.