Direct Answer
The S&P 500 Top 50 Equal Weight Index is a rule-based measurement of the 50 largest S&P 500 companies by market capitalisation, each holding weighted equally, maintained by S&P Dow Jones Indices. Like every index it owns nothing: it is a number produced by applying a published weighting formula to a selected list of securities, revised on a schedule the provider sets.
What this index covers
The S&P 500 Top 50 Equal Weight Index covers the 50 largest S&P 500 companies by market capitalisation, each holding weighted equally. S&P Dow Jones Indices defines which securities are eligible, how they are selected from that pool, and how much each one contributes to the published number.
The methodology document, published by S&P Dow Jones Indices, sets the rules for inclusion and removal. Corporate actions, index reviews, and eligibility changes all move the constituent list on the timetable the provider specifies.
How constituents are weighted
Swoopr has not verified the weighting method for this index against S&P Dow Jones Indices's current methodology document, so none is stated here rather than guessed. The provider link below is authoritative.
Current S&P 500 Top 50 Equal Weight Index constituents
S&P Dow Jones Indices publishes and licenses the S&P 500 Top 50 Equal Weight Index constituent list. Swoopr does not republish it here. The provider's own page is the authoritative source for current membership and weights.
S&P Dow Jones Indices: official S&P 500 Top 50 Equal Weight Index page
Related reading
- All stock market indexes: how indexes are built, weighted and revised.
- United States 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 S&P 500 Top 50 Equal Weight Index?
S&P Dow Jones Indices maintains the S&P 500 Top 50 Equal Weight Index and publishes the methodology document that defines its eligibility and weighting rules.
What does the S&P 500 Top 50 Equal Weight Index measure?
It measures the 50 largest S&P 500 companies by market capitalisation, each holding weighted equally. The index is a calculated number applying a weighting formula to a selected list of securities, and it holds nothing itself.
Where can I see the current S&P 500 Top 50 Equal Weight Index constituents?
S&P Dow Jones Indices publishes the current constituent list. Swoopr does not republish it, because index providers license constituent data and Swoopr holds no such licence.