Direct Answer
The BSE Sensex is a rule-based measurement of 30 major bse-listed companies, maintained by Asia Index/BSE. Like every index it owns nothing: it is a number produced by applying a published weighting formula to a selected list of companies, revised on a schedule the provider sets.
What this index covers
The BSE Sensex covers 30 major bse-listed companies, within the India market. Asia Index/BSE defines which securities are eligible, how they are selected from that pool, and how much each one contributes to the published number.
The index name does not state a fixed company count, so the number of constituents follows the eligibility rules rather than a target.
How constituents are weighted
Swoopr has not verified the weighting method for this index against Asia Index/BSE's current methodology document, so none is stated here rather than guessed. The provider link below is authoritative.
Current BSE Sensex constituents
Asia Index/BSE publishes and licenses the BSE Sensex constituent list. Swoopr does not republish it here. The provider's own page is the authoritative source for current membership and weights.
Related reading
- All stock market indexes: how indexes are built, weighted and revised.
- Asia-Pacific indexes: others covering the same region.
- Index concentration: measuring how much of an index sits in its largest holdings.
- Index rebalancing and inclusion effects: what happens to a stock when index membership changes.
Frequently Asked Questions
Who maintains the BSE Sensex?
Asia Index/BSE maintains the BSE Sensex and publishes the methodology document that defines its eligibility and weighting rules.
What does the BSE Sensex measure?
It measures 30 major bse-listed companies. The index is a calculated number applying a weighting formula to a selected list of companies, and it holds nothing itself.
Where can I see the current BSE Sensex constituents?
Asia Index/BSE publishes the current constituent list. Swoopr does not republish it, because index providers license constituent data and Swoopr holds no such licence.