Do not assume every pip is worth the same
Pip value depends on pair, contract size and account currency. Enter the value your broker shows for one standard lot in your account currency. A JPY pair, cross pair or non-USD account can change the conversion; a fixed ten-unit assumption is not universal.
Risk starts at the fill
A published stop distance often ignores the actual entry spread and the possibility of slippage at both ends. Add an adverse round-trip estimate to the stop distance. During news or low-liquidity periods, actual loss can exceed a stop-based estimate if the market gaps through the order.
Keep contest records in their lane
A competition result can establish a trader's placing in a defined division. It does not tell a subscriber which lot size is suitable for their account. Compare the signal's invalidation level with your broker's executable quote and your own risk cap before following it.
Worked lot-size limit
At the sample inputs, 100 units of cash risk divided by a 27-pip effective distance and 10 units per pip per standard lot gives about 0.370 standard lots. The extra two pips represent an adverse round trip, not a claim about any broker. Before using the result, check the pair's pip convention, lot contract size, live conversion rate and the broker's minimum increment. If the account cannot trade that increment, round down and recalculate the actual cash exposure.
When the stop is not a guarantee
A stop order may execute beyond its level in a gap or thin market. Record the news window, spread at receipt, margin use and whether the signal is for spot forex, a CFD or another contract with different protections and financing. Compare providers on their complete signal record and risk instructions, not on a competition credential alone. If the provider does not supply a stop or invalidation rule, this sizing exercise cannot make the signal safe or comparable.
Separate sizing from suitability
The calculated lot limit answers a narrow question: how much of this contract fits a chosen cash stop under assumed execution. It does not decide whether leverage, overnight financing or concentration across correlated currency pairs is suitable. Keep existing positions and event exposure in a separate portfolio risk record. A signal can fit the single-trade cap and still push total account risk well beyond the user's limit.
Source trail
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