Direct Answer
The ASE General Index is a rule-based measurement of all companies listed on the Amman Stock Exchange weighted by market capitalisation, maintained by Amman Stock Exchange. 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 ASE General Index covers all companies listed on the Amman Stock Exchange weighted by market capitalisation, within the Jordan market. Amman Stock Exchange 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
The general index (ASEGI) is built on free float shares: each company's listed shares are multiplied by its closing price and by a factor between zero and one, then divided by an index divisor. The factor comes from the free float ratio, which deducts shares held by directors, investors above 5% and any government ownership. Base value is 1000 for the year 1999.
The weighting method is the single biggest driver of how an index behaves. Two indexes covering the same market can diverge for years purely because they weight differently, which is why comparing index levels without knowing the method tells you very little.
What qualifies for inclusion
The sample includes the most active companies on the exchange and the highest in market capitalization. The related weighted price index describes its sample as the most liquid and largest 100 companies from the First and Second Markets, representing around 90% of the regular market's aggregate market capitalization.
Eligibility rules are the part of an index most readers never look at and the part that decides what it can possibly measure. A screen that excludes a whole sector, or admits only one listing venue, shapes the result far more than any day of trading does.
When the membership is revised
The free float factor of each company is changed quarterly by the exchange at the time of the index re-balancing.
Reconstitution is the one date an index changes shape by design rather than by price. Funds tracking it have to trade toward the new membership, which is why the schedule matters to anyone holding the tracker rather than only to the provider.
The rule that surprises people
Because only free float shares count, a company's weight can be a small fraction of its full market value; the exchange says this gives small and medium companies a better chance to be reflected in the index.
References
- Amman Stock Exchange: Amman Stock Exchange, Methodology, as published 2026. Every rule described on this page is taken from this document.
Current ASE General Index constituents
Amman Stock Exchange publishes and licenses the ASE General Index 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.
- Emerging Markets 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 ASE General Index?
Amman Stock Exchange maintains the ASE General Index and publishes the methodology document that defines its eligibility and weighting rules.
What does the ASE General Index measure?
It measures all companies listed on the Amman Stock Exchange weighted by market capitalisation. 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 ASE General Index constituents?
Amman Stock Exchange publishes the current constituent list. Swoopr does not republish it, because index providers license constituent data and Swoopr holds no such licence.