Tuesday Jun 23, 2026
Tuesday Jun 23, 2026
Monday, 22 June 2026 00:06 - - {{hitsCtrl.values.hits}}
The Colombo Stock Exchange (CSE) has announced the quarterly rebalancing of the All Share Price Index (ASPI), with the latest adjustments set to take effect from the market opening today (22 June).
The ASPI, the benchmark index of the Colombo bourse, represents the performance of all listed ordinary voting and non-voting equity securities and is widely regarded as the principal barometer of Sri Lanka’s equity market.
The quarterly rebalancing exercise reflects changes in the public shareholding percentages of listed companies and forms part of the index’s float-adjusted market capitalisation methodology.
The CSE noted that the ASPI was originally calculated using full market capitalisation but was revised in January 2022 to a float-adjusted market capitalisation basis. Under this approach, only the publicly held portion of a company’s market value is considered when determining its weight in the index.
As listed companies report public holding percentages on a quarterly basis, the CSE undertakes periodic adjustments to ensure the index accurately reflects changes in the free float available to investors.
The latest review is the second-quarter rebalancing for 2026. The Exchange said the next quarterly rebalancing exercise, covering the third quarter of 2026, is scheduled to take effect after market close on 18 September.
The ASPI tracks movements in the aggregate market value of listed equities and serves as a key indicator of market performance and direction. Market participants, fund managers and analysts use the index as a benchmark for measuring overall equity market trends and investment returns.
The CSE said detailed information on the ASPI methodology is available on its website.
