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.