Risk Management 101

Why risk management beats a good entry

You can be right 60% of the time and still go broke if your losers are bigger than your winners, or if one oversized trade blows up the account. Professional traders obsess over risk per trade and risk of ruin — not entries. The single most important number is: how much do I lose if this trade is wrong?

The 1% rule

Risk no more than 1–2% of your account on any single trade. With 1% risk, it takes a brutal 100 consecutive losses to be wiped out — statistically almost impossible with any real edge. Risk 10% per trade and just 10 losses in a row (very possible) halves your account. This is the difference between surviving a losing streak and ending your trading career.

Position sizing — the actual math

Position size is not "how much can I afford" — it's derived from your stop:

Position size = (Account × Risk%) ÷ (Entry − Stop distance)

Example: $10,000 account, 1% risk ($100), stop 2% away → position = $100 ÷ 0.02 = $5,000 notional. Your leverage then just follows from that — it's an output, not a knob you crank for excitement.

Stop-loss placement

A stop belongs where your idea is proven wrong — below structure, not at an arbitrary dollar amount. Place it too tight and normal volatility stops you out; too wide and you risk too much. The ATR (average true range) tells you how much the asset normally moves, so you can set a stop outside the noise.

Risk:reward & the win rate you actually need

Risk:reward and win rate are two sides of one coin. At 1:1 you need to win >50% to profit. At 1:3 (risk $1 to make $3) you only need ~25%. This is why trend traders survive on low win rates — their winners dwarf their losers. Know your required win rate before you trade a setup.

Liquidation is a hard stop you don't control

On leverage, if price hits your liquidation price the exchange force-closes you at a loss — no second chances. Always know where it is, and keep your real stop-loss well in front of it so you exit on your terms, not the exchange's. Higher leverage pulls liquidation dangerously close to entry.

Risk of ruin — why 1% and 10% aren't twice as risky, they're worlds apart

Each loss compounds off a smaller account, so risk of ruin isn't linear — it's geometric. The table shows how much of your account is left after a losing streak, at different risk-per-trade sizes:

At 5% risk, 50 losses (a rough month for a high-frequency strategy on a rough win rate) leaves 7.7% of the account. At 1% risk, the same 50-loss streak still leaves 60.5% — survivable and rebuildable. That gap, not the entry signal, is what separates traders who blow up from traders who don't.

Common risk-management mistakes

• Moving the stop further away once price goes against you, to "give it room" — this silently turns a planned 1% loss into 3–5% and defeats the whole point of pre-defining risk.
• Sizing off available margin, not the stop — using however much leverage the exchange allows instead of deriving size from account × risk% ÷ stop distance means risk per trade swings wildly between setups.
• Revenge trading — increasing size right after a loss to "win it back" compounds size exactly when a losing streak has already started, which is the fastest route up the ruin table above.
• Ignoring correlation — five separate "1% risk" longs on majors that move together in a crash aren't 5 independent 1% bets, they're closer to one correlated 5% bet.
• Good risk:reward without an edge — a 1:3 setup only needs a ~25% win rate on paper, but if the stop sits at a level price is likely to hit anyway, the ratio is meaningless. Risk:reward describes the payoff, not the probability.

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Frequently Asked Questions

What is the 1% rule in trading?

The 1% rule means risking no more than 1% of your total account on any single trade. With a real edge, it makes a full account wipeout statistically almost impossible, because it would take around 100 losses in a row to blow up. It's the simplest defence against a normal losing streak ending your account.

How do I calculate position size?

Position size = (Account balance × Risk %) ÷ stop-loss distance. For example, a $10,000 account risking 1% ($100) with a 2% stop gives a $5,000 notional position. Size is derived from your stop and risk tolerance, not from the maximum margin the exchange lets you use.

Where should I put my stop-loss?

Place your stop where your trade idea is proven wrong — typically just beyond a structural level like a recent swing low or support — and outside normal volatility (use ATR to gauge that). Avoid arbitrary round-number or fixed-dollar stops that ignore the chart.

What is risk of ruin?

Risk of ruin is the probability that a losing streak wipes out your account given your risk per trade, win rate, and risk:reward. Lower risk per trade and higher expectancy both push it toward zero. It's why sizing matters more than any single entry.

Why does 5% risk per trade fail so much faster than 1%?

Because each loss compounds off a smaller balance, risk of ruin scales geometrically, not linearly. After 50 straight losses, 1% risk still leaves 60.5% of the account, but 5% risk leaves just 7.7% — five times the risk per trade produces roughly ten times the damage over a losing streak.

Does risking 1% on five correlated positions still count as 1% total risk?

No. If the positions move together (five majors in a market-wide crash, for example), they behave as one combined bet, not five independent ones. Treat correlated positions as sharing a risk budget, not each getting their own 1%.