Direct Answer
The PSX All Share Index is a rule-based measurement of broad Pakistani equity benchmark, maintained by Pakistan 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 PSX All Share Index covers broad Pakistani equity benchmark, within the Pakistan market. Pakistan 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
PSX describes the All Share Index as built on the full cap methodology, so each company counts at its full market capitalisation, unlike the KSE-100 and KSE-30 which use free float.
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 index consists of all companies listed on the PSX, rather than a ranked subset of them.
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.
References
- Pakistan Stock Exchange: Pakistan Stock Exchange, Products and Services: Indices, as published 2026. Every rule described on this page is taken from this document.
Current PSX All Share Index constituents
Pakistan Stock Exchange publishes and licenses the PSX All Share 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 PSX All Share Index?
Pakistan Stock Exchange maintains the PSX All Share Index and publishes the methodology document that defines its eligibility and weighting rules.
What does the PSX All Share Index measure?
It measures broad Pakistani equity benchmark. 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 PSX All Share Index constituents?
Pakistan Stock Exchange publishes the current constituent list. Swoopr does not republish it, because index providers license constituent data and Swoopr holds no such licence.