Position Sizing for Indian Traders

The principle

Position sizing answers 'how many lots do I buy?' — a question more important than 'what do I buy?'. Getting size right on a mediocre strategy beats getting size wrong on a great one.

Fixed-percent-risk

Define max loss per trade (say 1% of account). Compute lot count so that if the stop hits, you lose at most that 1%. Simple, robust, and hard to blow up with.

Volatility-adjusted sizing

Adjust size for current volatility. Small position in high-VIX regimes, larger in low-VIX. This keeps risk constant as market conditions change.

Indian F&O lot constraints

In Indian F&O, you trade in lots. For small accounts, this can mean you cannot properly size — one lot of Bank Nifty monthly options is already several thousand rupees of premium. Starter plan traders should consider this before sizing up.

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How Sleeping Trade approaches position sizing for Indian F&O

Sleeping Trade enforces position sizing in code. Every trade is sized as a function of account equity, instrument volatility, and the system's current risk budget. There is no manual override.

This is the largest single difference between systematic and manual F&O. Manual traders almost always overweight 'high-conviction' trades, which is exactly when sizing discipline matters most. The 91% retail loss rate is largely a position-sizing failure, not a strategy failure.

Frequently Asked Questions

Can I set my own position sizes?

No. Sizing is mechanical — that is the point. User-configurable sizing is one of the largest sources of manual trader losses.

How is sizing calculated?

Risk-per-trade as a percentage of account equity, scaled by instrument ATR. Specific parameters are part of the strategy and not disclosed.

Will sizing scale up if my account grows?

Yes. The system reads your broker margin/equity at start of day and sizes accordingly.

Position sizing rules of thumb for Indian F&O

The classic rule — risk 1% of capital per trade — is harder to apply in Indian F&O than in equities because lot sizes are large and indivisible. At ₹2 lakh capital with NIFTY lot size 75, even one lot can violate the 1% rule on a wider stop.

The practical answer is to scale capital up before scaling lots up. Most retail traders do the opposite — they trade more lots on the same small capital, which is exactly how the SEBI 91% loss rate gets generated.

Sleeping Trade enforces sizing as a function of account margin and instrument volatility. The user cannot ask for more lots than the risk budget allows, which is the discipline manual traders cannot sustain.