Correct definition of martingale is that with decreasing equity you increase trade size. So even grid is form of martingale.
More common definition is that martingale is increasing trade size, while grid is adding more positions of the same size.
The first definition is the same for any strategy unless you stop trading once you get 1 wrong?
No martingale is like you trade
1 lot and loose so you open 2 lots and loose so you open 4 lots etc
Grid is like you trade 1 lot and did not reach profit so you add another 1 lot trade and another...
1 of 11 charts running is martingale in the account I've on display.
I understand grid and doubling/martingale.
I was confused with the decreasing equity meaning martingale.
A strategy that is tested, say 1.00 lot for 100,000. When it loses it's first trade and goes to 98,000, when it opens it's next trade at 1.00 lot does that mean it fits your 1st definition of martingale? Decreasing equity equalling larger trade size?
Martingale scheme is adding to position when equity decreases.
Equity decreases when open trades are negative.
So lets say you have account balance and equity $1,000
You open trade which turns negative to -$100
So your equity decreased.