Martingale Simulator
Most "Pass Your Challenge" EAs use dangerous Grid or Martingale strategies. Discover exactly how small of a market move it takes to permanently blow your funded account.
Account Blown
A market move of just 0 pips against you is enough to trigger the $5,000.00 daily loss limit.
| Trade # | Lot Size | Total Pips Against | Total Floating Loss |
|---|
Complete Guide to Martingale & Grid EAs on Prop Firms
How Grid Trading Works
The EA opens a trade. If the trade goes into negative equity (against you), instead of taking a stop loss, the bot opens a second trade in the same direction, but with a larger lot size (usually 1.5x or 2.0x larger). It continues to do this at set intervals (pip distances). The theory is that the market will eventually retrace, and because the newer trades have massive lot sizes, a very small retracement will pull the entire basket of trades into profit.
The Mathematical Certainty of Ruin
Martingale works beautifully in ranging markets, creating a perfectly smooth equity curve. But the moment a news event happens or a strong trend begins, the math breaks down violently. Because lot sizes scale exponentially, your floating drawdown also scales exponentially.
Why They Fail Prop Firm Challenges
If you start with 0.1 lots and double it every 15 pips (0.1, 0.2, 0.4, 0.8, 1.6, 3.2), by the 6th trade, a 1-pip movement against you costs $32. A standard trending day in GBP/USD can easily move 100-150 pips in a straight line without retracing. This easily triggers a prop firm's 5% Daily Loss limit long before the bot can exit the grid in profit.
Frequently Asked Questions
Are Grid or Martingale EAs allowed on prop firms?
Technically, yes, many prop firms like FTMO allow EAs. However, they are mathematically incompatible with strict daily drawdown limits (usually 5%). You will almost always hit the daily loss limit during a strong trending day.
Can I just use a smaller initial lot size?
Yes, our simulator allows you to lower the initial lot size. However, if you start with a lot size small enough to survive a 200-pip trend, the profits generated during ranging markets will be so tiny that it will take you years to pass the 10% profit target.
Why do sellers claim 100% win rates?
Because Martingale EAs don't use stop losses, they technically never 'lose' a trade until the entire account blows up. They will show a 100% win rate for months on a live account, until a single Black Swan event wipes out 100% of the balance in one day.