Martingale trading bot: is it safe?
The short answer
Not really. Martingale doubles the trade size after every loss. After 7 losses in a row, the next trade is 128 times the first, and you have already risked 255 times your first stake. One long losing streak can wipe out an account. Fixed, small risk per trade with a daily loss limit is far safer.
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How fast martingale risk grows
Starting from a trade size of 1 and doubling after each loss.
| Losses in a row | Next trade size | Total already risked |
|---|---|---|
| 1 | 2x | 3x |
| 2 | 4x | 7x |
| 3 | 8x | 15x |
| 4 | 16x | 31x |
| 5 | 32x | 63x |
| 6 | 64x | 127x |
| 7 | 128x | 255x |
| 8 | 256x | 511x |
Safer ways to size trades
- Risk a small, fixed share of your account on each trade.
- Set a daily loss limit and stop when you reach it.
- Use a stop loss on every trade.
- Backtest your sizing rule and run a Monte Carlo test before going live.
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Good to know
Martingale can look profitable for a long time, then lose everything in one streak. Losing streaks happen more often than most people expect. Nothing here is financial advice.
Frequently asked questions
Does martingale work?
It can win often, but the losses grow so fast that one long losing streak can wipe out the account. That is why most professionals avoid it.
Why is martingale dangerous?
Each loss doubles the next trade. After 7 losses in a row, the next trade is 128 times the first. Markets can trend against you for longer than your account can last.
What is safer than martingale?
A small, fixed risk per trade, a stop loss on every trade and a daily loss limit. Test any sizing rule on past prices and with a Monte Carlo test before using real money.
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