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Free risk tools

Martingale and grid risk

Grid and martingale EAs win small most days and lose the account on one long move. Type in how yours adds positions, and see the move that ends it.

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  • No sign-up
  • Nothing you type is stored

How the EA adds

2 doubles each add (a martingale); 1 adds the same lot each time (a flat grid).
How far the price moves against the trade before the next add.
The EA's maximum number of trades in one basket.
EURUSD for a euro account, GBPUSD for pounds. Leave it empty for a typical rate; ignored for US dollars.
In price, to compare the move with a normal day.

What one long move does

An example with typical numbers. Change any box to use your own.

The account is gone before the grid is full. A move of 33.15 (331 pips) against the first entry takes the whole $1,000.00, at position 7 of 8.

Why it looks safe
Most days the price comes back a little and the basket closes in profit. The first position risks almost nothing; the last one carries 0.64 lots.
The way out
With 7 positions open, the price has to come back 9.72 (97 pips) just to break even, while the loss grows by $12.70 for every further pip against.
Each add, and the floating loss when the price reaches the next one
#AgainstLotsTotalLossOf balance
10.000.010.01$5.000%
25.000.020.03$20.002%
310.000.040.07$55.006%
415.000.080.15$130.0013%
520.000.160.31$285.0029%
625.000.320.63$600.0060%
730.000.641.27$1,235.00124%

For a buy; a sell is the same in the other direction. Losses at 4,000.00, without spread, swap or margin calls: a broker's stop-out usually closes the basket before the balance reaches zero.

Education only, not investment advice. The answer comes from the numbers you typed in, not from your account or the market. Simulated results are hypothetical and have limits: real trading has slippage, gaps, changing results and emotions. Trading leveraged products can lose money quickly, including all of it. Risk warning

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Educational only, not financial advice; trading involves risk.

Why a smooth curve can hide the whole account

A grid or martingale adds to a losing trade and waits for a small bounce. Because markets bounce most of the time, the account curve climbs smoothly for weeks or months, and the backtest looks perfect. The risk is all in the rare day the price keeps going: every add makes the basket bigger, so the same move costs more each time, until one trend takes everything. A fixed stop on every trade, and a size that survives a normal losing run, is the difference between a bad week and an empty account.

Not advice. The answer is arithmetic on the numbers you type, not a view on any EA or market.

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