Risk Management in Trading — Position Sizing, Stop Loss & Rules
Why Risk Management is the Most Important Skill
Most beginners focus on finding the perfect stock or entry point. Professionals focus on how much to risk and how to limit losses.
A trader with a 40% win rate can be very profitable if their average winner is 3× their average loser. A trader with a 70% win rate can still blow up their account if a few big losses wipe out many small wins.
"The first rule of trading is: don't lose money. The second rule is: don't forget the first rule." — Warren Buffett (paraphrased)
The 1% Rule
Never risk more than 1–2% of your total capital on a single trade.
If your account is ₹1,00,000:
- Maximum risk per trade = ₹1,000–₹2,000
This means even 10 consecutive losing trades only reduces your account by 10–20%, not 50%. You live to trade another day.
Position Sizing Formula
Position Size = (Account × Risk %) ÷ (Entry Price − Stop Loss Price)Example:
- Account: ₹1,00,000
- Risk per trade: 1% = ₹1,000
- Entry: ₹500
- Stop Loss: ₹480 (₹20 below entry)
Position Size = ₹1,000 ÷ ₹20 = 50 shares
You buy 50 shares × ₹500 = ₹25,000 position, risking ₹1,000 (1% of account).
Stop Loss — Your Insurance Policy
A stop loss is a pre-defined exit point that limits your loss on a trade.
Types of stop loss:
- Fixed stop: Set a specific price (e.g., SL at ₹480 if you bought at ₹500)
- Percentage stop: Exit if price falls X% from entry
- Technical stop: Below support, below a moving average, or below a recent low
Golden rule: Set your stop loss BEFORE you enter the trade. Never move a stop loss further away to "give the trade more room."
Risk-Reward Ratio
For every trade, calculate: How much do I risk vs how much do I stand to gain?
- Minimum: 1:2 risk-reward (risk ₹1 to make ₹2)
- Ideal: 1:3 or better
With a 1:2 ratio, you only need to be right 40% of the time to be profitable:
- 6 losses × ₹1,000 = −₹6,000
- 4 wins × ₹2,000 = +₹8,000
- Net: +₹2,000
The Key Rules
Rule 1: Always use a stop loss
No exceptions. Every trade has a maximum loss defined before entry.
Rule 2: Never average down on a losing position
Adding to a losing trade is how small losses become catastrophic ones. Exit and reassess.
Rule 3: Let winners run, cut losers quickly
The psychological instinct is opposite — we want to book profits fast and hold losing trades hoping they'll recover. Fight this instinct.
Rule 4: Don't overtrade
Quality over quantity. 2–3 high-conviction trades per week beat 20 mediocre trades.
Rule 5: Keep a trading journal
Track every trade: entry, exit, reason, outcome, emotions. Your journal will show patterns you can't see in the moment.
Rule 6: Know your maximum daily/weekly loss
If you lose 3% in a day, stop trading for that day. Emotional trading after losses is extremely dangerous.
Paper Trading + Risk Management
Practice risk management on [NixPulse paper trades](/paper-trade) first. Apply the 1% rule and stop losses to every paper trade. Build the habit before real money is at stake.
Most traders don't blow up because of bad analysis — they blow up because of poor risk management. Master this skill first.