Grid trading vs Martingale: what’s the real difference?
Both strategies can show smooth equity curves for months, then fail badly. How each works, why Martingale is especially dangerous, and what to check before running either.
How grid trading works
A grid places buy and sell orders at fixed intervals above and below a starting price — every 20 pips, for example. In a ranging market, price oscillates through the grid and each leg can close in profit.
The weakness is a strong trend. Positions on the wrong side keep accumulating, and without a hard stop the floating loss can grow without limit.
How Martingale works
Martingale doubles the position size after every loss, so that a single win recovers all previous losses plus a small profit. It feels safe because most sequences end with a win.
Why the maths catches up
Position size grows exponentially. Starting at 0.01 lots, six consecutive losses take the next trade to 0.64 lots — 64 times the original. Losing streaks of that length are not rare over hundreds of trades, and margin usually runs out before the win arrives.
What to check before using either
- A hard maximum drawdown at which the system stops trading.
- Behaviour in trending markets — test through a strong trend, not just a range.
- Worst-case margin use, not average results.
- Whether the track record is long enough to include a bad month.
The bottom line
Whatever system you use, insist on a fixed stop loss on every trade and never increase size to recover a loss. Recovery strategies can look impressive for a while, but they trade small, frequent gains for rare, account-ending losses.
Educational content, not personal advice. Trading involves risk.