What is Martingale and why is it controversial in the trading community?

I just saw a series of questions about this strategy, so I decided to share my understanding. What exactly is Martingale? Simply put — it’s a technique of increasing your position size each time you lose, aiming to recover losses and make a profit when the price eventually turns back. The original idea comes from gambling games, but traders have adapted it for the financial markets.

The mechanism is very easy to understand. Suppose you buy at $1 with $10. The price drops to $0.95, so you open a second position with $12 (increased by 20%). If it continues down to $0.90, you open a $14.4 position. Each time, your average purchase price becomes lower. Even a small recovery can close all positions with a profit. That’s the appeal of it.

But what makes Martingale so dangerous? The biggest issue is the risk of capital blowout. If you don’t have enough money for the next position, all previous losses remain. With a $100 deposit, if you increase by 20% each time, after just 5 trades you’ve used $74.42. If the price keeps falling without recovery, you’ll run out of money. Psychological pressure is also intense — continuously doubling your bet can make you lose your composure.

Specific calculation: Next position size = Previous position × (1 + Martingale rate). For example, with 20% and starting with $10: Trade 1 is $10, trade 2 is $12, trade 3 is $14.4, trade 4 is $17.28, trade 5 is $20.74. Total is $74.42. With a 10% rate, total is only $61. With 50%, you need nearly $131 — almost double.

What is the proper way to use it? First, choose a small increase rate — 10-20% is best for beginners. Second, calculate in advance how many trades you can open with your current funds. Third, keep a reserve fund — don’t put everything in at once. Fourth, use additional filters like trend-following — if the market is in a strong downtrend, avoid averaging down. Fifth, always remember that Martingale is a high-risk strategy.

Currently, BTC is at $67.95K (+1.32%), ETH at $2.07K (+2.16%), BNB at $615.60 (-0.21%). These prices could be opportunities or traps depending on how you manage your positions.

Conclusion: Martingale is a powerful tool but requires strict discipline. It’s not a strategy for the greedy — it’s for those with a clear plan and good risk management. Beginners should start with minimal increase rates, always do calculations beforehand, and be ready to stop when the market doesn’t cooperate. Trade smart, manage your risks, and don’t let emotions drive your decisions.