CSE to Rebalance All Share Price Index for Q2 of 2026

The Colombo Stock Exchange (CSE) announces the rebalancing of the All Share Price Index (ASPI) for the 2nd Quarter of 2026.

The announced rebalancing will be effective from the market opening of 22nd June 2026 (after the market close of 19th June 2026).

What is Quarterly Rebalancing?

The ASPI was originally calculated based on full market capitalization.

In January 2022, the methodology was revised to adopt a float-adjusted market capitalization basis, whereby only the public holding portion of a company's market capitalization is considered in the index calculation.

As listed companies report their public holding percentages on a quarterly basis, the ASPI requires periodic adjustments to reflect these changes.

These adjustments are carried out through the quarterly rebalancing process of the ASPI. Accordingly, the next quarterly rebalancing exercise for the ASPI (2026 Q3) is scheduled to take effect after market on 18th September 2026.

About ASPI

The ASPI is the benchmark index of the CSE, representing the overall performance of all listed ordinary voting and non-voting equity securities.

It reflects changes in the aggregate market value of listed equities and serves as a key indicator of the performance and direction of the Sri Lankan stock market.

The detailed methodology can be accessed on the CSE website at www.cse.lk.

About CSE

The Colombo Stock Exchange (CSE) operates the only stock market in Sri Lanka and is responsible for providing a transparent and regulated environment where companies and investors can come together.

The CSE is a company that is limited by guarantee established under the Laws of Sri Lanka.

The CSE is licensed by the Securities and Exchange Commission of Sri Lanka (SEC) and is a mutual exchange consisting of 15 Members and 13 Trading Members.

All Members and Trading Members are licensed by the SEC to operate as Stockbrokers.

For more information, please visit: www.cse.lk.