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The share of a stock in an index.
Published by The Retail Trader · JUL 31, 2026 · Market Basics
Weighting — A stock's share in the index.
If a stock has more weight then its 2% move will move the index the most.
This term comes under Market Basics, in the section "INDEX, SIZE and SECTOR". Ab words that tell where a company fits in the market:
Other terms in this group — understanding them together is more useful:
• Index
• Nifty 50
• Sensex
• Bank Nifty
• Sectoral Index
• Market Capitalisation
• Large Cap / Mid Cap / Small Cap
• Blue Chip
• Free Float
• Sector
To read the entire group and all its examples in one place, see the journal "MARKET BASICS: ABC of Market" - this term has been taken from there.
This entry is for educational purposes only and is not a recommendation to buy or sell. Exchanges change charges, margins, lot sizes and expiry rules from time to time, so verify any figures with your broker or exchange.