Risk Management & Position Sizing

Risk Management Is Not Optional — It Is Everything

You can have the best trading strategy in the world, but without proper risk management, one bad trade can destroy your entire account. Risk management is the single most important skill in trading. Professional traders spend more time managing risk than finding trades.

The 1-2% Rule

The foundational rule of position sizing: never risk more than 1-2% of your total trading capital on a single trade. This means if you have LKR 300,000 in your trading account, you should not risk more than LKR 3,000–6,000 per trade.

"Risk" does not mean the total position size — it means the amount you would lose if your stop-loss is hit. Here is how to calculate it:

Position Sizing Formula:

Position Size = (Account Balance x Risk Percentage) / (Entry Price - Stop-Loss Price)

Example:

• Trading capital: LKR 300,000 (~$1,000)
• Risk per trade: 2% = LKR 6,000 (~$20)
• BTC entry price: $80,000
• Stop-loss: $76,000 (5% below entry)
• Risk per unit: $80,000 - $76,000 = $4,000
• Position size: $20 / $4,000 = 0.005 BTC (~$400)

Even though you have $1,000, you would only take a $400 position — because that is the size where your stop-loss limits your loss to exactly 2% of capital ($20).

Stop-Loss Strategies

A stop-loss is a predetermined price at which you exit a losing trade. No exceptions.

1. Fixed Percentage Stop-Loss

Set your stop at a fixed percentage below your entry (for longs) or above (for shorts). Common ranges:

• Tight: 2-3% (for short-term scalping)
• Moderate: 5-7% (for swing trading)
• Wide: 10-15% (for position trading / longer-term holds)

2. Technical Stop-Loss

Place your stop below a key support level or below a recent swing low. This is more intelligent than a fixed percentage because it accounts for the asset's actual price structure. If the support holds, your trade remains valid. If it breaks, the trade thesis is invalidated — and you want to be out.

3. Trailing Stop-Loss

A trailing stop moves up with the price, locking in profits as the trade goes in your favor. For example, a 5% trailing stop on a trade that goes from $80,000 to $90,000 would set your stop at $85,500 — locking in a profit even if the price reverses.

Risk-Reward Ratio

The risk-reward ratio (RRR) compares what you stand to lose versus what you stand to gain:

RRR = Potential Profit / Potential Loss

Aim for a minimum RRR of 1:2. This means for every $1 you risk, you target at least $2 in profit. With a 1:2 RRR, you only need to win 34% of your trades to be profitable. With 1:3, you need to win only 26%.

Portfolio Allocation

Never put your entire crypto allocation into active trading. A sensible portfolio structure for a Sri Lankan crypto enthusiast:

This structure ensures that even if your trading account is completely wiped out, your long-term holdings and savings remain untouched.

Correlation Risk

In crypto, most assets are highly correlated with Bitcoin. When BTC drops 10%, most altcoins drop 15–30%. This means holding 10 different cryptocurrencies does not provide the diversification you might expect. True diversification in crypto requires:

• Different asset classes (crypto + stablecoins + fiat)
• Different time horizons (long-term holds + active trades)
• Uncorrelated assets outside crypto (traditional investments, real estate, gold)

The Maximum Drawdown Rule

Set a maximum portfolio drawdown limit — the point at which you stop trading entirely and reassess. A common rule: if your trading account drops 20% from its peak, stop trading for at least one week. Use that time to review your journal, identify what went wrong, and adjust your approach before returning.