Nifty and Bank Nifty can be the same book

Index books often move together. A long on Nifty and a long on Bank Nifty can be one bet wearing two symbols. Size them as one risk unit, or pick the cleaner chart and sit out of the other.

Before you add the second idea, ask: would the same news, the same expiry, or the same failed level close both? If yes, cut size — do not average into the theme.

Classroom rule: correlated books share a single invalidation story. Write it once. If you cannot explain why the second chart is a different thesis, it is not a second trade.

Education only. No instrument here is a recommendation.