Risk management 101: how pros avoid blowing up

90% of retail traders lose money. Not because they pick the wrong direction — most pick right about half the time. They lose because they don't manage risk. A great prediction with bad sizing is a great way to go broke.

The core idea

There are exactly three rules: position sizing, stop-loss discipline, and never risk more than ~2% per trade.

These are not opinions. They are the arithmetic of staying in the game. A trader risking 2% per trade can withstand 35 consecutive losses and still have half their capital. A trader risking 10% is broke after 7. The market does not care which one you are. It just keeps rolling the dice.

How it actually works

1. 1

   Define risk per trade

   Decide the maximum dollar loss you accept on any single position. 1–2% of total balance is the institutional standard.

2. 2

   Size the position from the stop

   Position size = risk per trade ÷ distance to stop. The stop comes first, the size comes second. Never the other way around.

3. 3

   Honor the stop, every time

   The trade you 'just have to hold a little longer' is the trade that wipes out a month of gains.

4. 4

   Cap concurrent exposure

   No more than ~10% of capital deployed at the same time. Diversification is a free lunch — eat it.

Why it works

Recovering from -10% requires +11%. Recovering from -50% requires +100%. The math is brutal and asymmetric.

Compounding works in both directions. A drawdown isn't just a number — it's a steeper hill back. Pros obsess over avoiding the deep hole, because they know the climb out is geometric, not linear.

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