Discipline

Risk First: Why a Stop Loss on Every Trade Beats Martingale, Grid and Averaging Down

Martingale, grid and averaging down all win often and lose everything once. Here is the arithmetic behind that, and why a predefined stop loss and take profit keep a trader in the game.

2 min read Stop 8 of 10 on the route

Every trader who lasts learns it, usually the hard way: you do not get paid for being right. You get paid for still being here next year. Risk is decided before the trade is opened, not after.

The only number you fully control

Where price goes

Not yours to control.

Whether the next trade wins

Not yours either.

How much you lose if you are wrong

Fixed in advance by a stop loss, while a take profit fixes what you are aiming for.

The trap of the systems that “never lose”

Fixed 1% risk, with a stop loss

92.3%of the account left

Martingale: double after each loss

256xthe first trade, after 255 units lost
Slide the losing run. At 1% risk, twenty losses in a row still leave more than four fifths of the account. Martingale doubles each time: after ten losses the next trade is 1,024 times the first, to win back one unit.

Why losses hurt more than they look

lossgain needed to get back
Small losses are cheap to repair, large ones close to permanent: lose 10% and you need 11% to get back; lose 50% and you need 100%; lose 75% and you need 300%.

What sound risk looks like

  1. 1
    A stop loss on every trade

    Placed when the trade is opened, never moved further away.

  2. 2
    A fixed, small risk per trade

    A percentage of the account: the size follows the stop, not the other way round.

  3. 3
    A target that pays for the losers

    Winners larger than losers: you can be wrong more often than right and still grow.

  4. 4
    A stop that adapts

    Sized from current volatility: room in a fast market, tight in a quiet one.

  5. 5
    A limit for the day

    When it is reached, trading stops until tomorrow.

The equity curve tells you which you have

Martingale or gridStop loss on every trade
The curve tells you which you have. Too smooth, then a cliff; or steps, with setbacks along the way. The second is the honest picture, and the one still there in five years.

Every K3Bxn Expert Advisor is built on that side of the line: a predefined stop loss and take profit on every trade, and no martingale, no grid, no arbitrage. Next: win rate, risk to reward and the losing streak you should expect.

Check yourself

2 questions

  1. An account loses 50%. What gain brings it back?

  2. After ten losses in a row, how big is a martingale’s next trade?

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