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Methodology revision of All Share Price Index

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Nishantha Hewavithana Head of Research and Strategy

Colombo Stock Exchange (CSE) is planning to revise the calculation methodology of All Share Price Index (ASPI) by changing the constituent weighting method from full Market Capitalization to free float-adjusted Market Capitalization. The following interview intends to provide some essential information in this regard.

1. What is a stock market index and the purpose of it?

A stock market index is a statistical measure which shows changes taking place in the stock market. Hence, an index reflects overall market sentiment and direction of price movements of the stock market. These indices can be calculated for the whole market (broad market index), a select segment (sector indices) or based on any other theme (eg; Dividend Index, ESG Index etc.). Indices are mainly useful in determining the return of the market segment, understanding the overall market direction.

2. What are the different types of calculation methodologies?

There are various types of calculation methodologies based on different aspects. One such aspect is the weighting of index constituents. Two major weighting schemers are weighting index constituents on full market capitalization of each constituent and weighting index constituents on float adjusted market capitalization of each constituent.

3. What is float adjusted market capitalization?

Simply, this means total market capitalization multiplied by the public holding percentage. Public holding is the portion of the issued quantity of shares readily available for investors to trade and expressed as a percentage. This is calculated by companies and disclosed in interim financial statements. The definition of public holding can be found in ‘Contents Definitions and Introduction’ under Listing Rules that can be accessed at https://cdn.cse.lk/pdf/cse-rules/listing-rules/Contents-Updated-as-at-22-06-2021.pdf

For example, in a given company the public holding percentage is 19% means that only 19% of the issued quantity of shares are readily available to go hand in hand among investors in general. The balance 81% is held by strategic investors which we cannot expect to be traded in the market in general. Accordingly, 19% of the market capitalization (known as float adjusted market capitalization) is ready to go hand in hand- on daily basis.

4. What is the ASPI methodology revision of 2022?

The ASPI has been calculated based on full market capitalization which means the index constituents are weighted based on the full market capitalization of each security. Alternatively, it could be weighed on float adjusted market capitalization. The revision is to change the weighting scheme from full market capitalization to float adjusted market capitalization.

Since companies disclose public holding quarterly in their interim financial statements the index weights would be revised quarterly (known as Index Rebalancing).

5. What is capping and why capped at 5%?

Capping is the technique use in index calculation to address the issue of over representation of one of few securities in an index. Index is capped at 5% level to address the issue of over representation of one of few securities in an index. Once capped the excess weight is distributed proportionately among the remaining securities in the index. The same procedure is repeated until no security is exceeding 5% cap rate.

We back calculate Float ASPI index and capped at different cap rates. Based on return per unit of risk, 5% capping level has been the best.

6. What makes CSE to move for this kind of change?

Indices based on float adjusted market capitalization are better able to generate realistic market returns than those based on total market capitalization because they are based on tradable quantities.

Since the introduction of this idea in early 2000, most of the markets have adopted this in their index calculation methodologies. All the index service providers such as S&P Dow Jones, FTSE are using this method and is considered as a best practice in index calculation methodologies.

7. What are the advantages and disadvantages of this move?

The main advantages of the revised index would be that it will generate more realistic returns and the index methodology would be in par with generally accepted best practices of index calculations. There are no disadvantages such.

8. Will the ASPI index value change suddenly due to the implementation this change itself?

No. On the effective date of the methodology revision the ASPI will start moving from the same value that it closed on the day immediately prior to the revision. When this methodology revision is implemented, the serial continuity of the index will be maintained and there will be no sudden shift of the index level solely due to the launch of the new index.

9. How will it affect the ASTRI index (All Share Total Return Index)?

All share Total Return Index (ASTRI) measures the total return (Price Return + Dividend Return). The ASTRI reflects returns due to both price changes and dividend income. After the implementation of the methodology revision of ASPI, the price return component will be based on float adjusted market capitalization. This means that ASTRI is also calculated based on float adjusted market capitalization

10. Is the index methodology of CSE publicly available?

Yes. It is available on CSE website. https://cdn.cse.lk/pdf/Index-Methodologies-of-Colombo-Stock-Exchanhge.pdf



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Nestlé Lanka celebrates 120 years of ‘Good Food, Good Life’ in Lanka

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Nestlé Lanka Chairman and Managing Director Bernie Stefan (left) and Ruwan Welikala, Director – Corporate Affairs and Communications, provide an overview of Nestlé Lanka’s 120-year journey in Sri Lanka at a media briefing held on March 10 at Cinnamon Life – City of Dreams, Colombo. Pic by Nishan S. Priyantha

Nestlé Lanka Limited, the ‘Good Food, Good Life’ company, celebrates 120 years of operations in Sri Lanka this year. Since its founding in 1906, the company has grown into the nation’s leading food and beverage manufacturer, producing over 90% of its locally sold products in Sri Lanka. Guided by its purpose of enhancing quality of life for today and future generations, Nestlé Lanka has touched lives through nutrition, livelihoods, and sustainability.

Over the decades, the company has offered tastier and nutritious choices tailored to local needs, from birth to old age, with micronutrient-fortified products that promote healthier living. Iconic brands such as NESTOMALT and MILO further encourage active and healthy lifestyles through sports sponsorships.

Beyond products, Nestlé Lanka engages communities through partnerships with dairy and coconut farmers, supporting skills development, responsible sourcing, and local livelihoods. Its youth empowerment initiative, Nestlé Needs YOUth, strengthens employability, while collaborations with organisations like BConnected create inclusive work pathways for people with disabilities.

Sustainability is a core focus, with a commitment to achieve net-zero carbon emissions by 2050. Recent steps include a biomass boiler commissioned in 2024 and the use of 100% renewable electricity at the Kurunegala facility. Through these initiatives, Nestlé Lanka continues to deliver on its promise of enriching lives while safeguarding the planet.

Commenting on this milestone, Bernie Stefan, Chairman and Managing Director of Nestlé Lanka said, “Celebrating 120 years in Sri Lanka is a moment of immense pride for all of us at Nestlé. This milestone reflects not only the longevity of our business, but the trust generations of Sri Lankan families have placed in us and the strong partnerships we have built across the country. For over a century, we have been committed to Working Together for Good – contributing meaningfully to the Sri Lankan economy, supporting livelihoods, and positively impacting communities, while consistently providing tasty and nutritious products that consumers love. Through iconic brands such as NESTOMALT, MILO, MAGGI to name a few, we have been part of everyday moments in Sri Lankan homes, helping nourish families and support healthier, more active lifestyles. As we look ahead, we remain firmly committed to continuing this journey with purpose, responsibility and care, enriching Sri Lankan lives every single day.”

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Sampath Bank and Apartner Bring Digital Payments to Sri Lanka’s Growing Condominium Sector

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Chirath Samarasekara, Head of Card Centre at Sampath Bank, exchanges the partnership agreement with Deshan Dias Bandaranayake, Co-Founder and Chief Executive Officer of Apartner, Chaminda Samarajeewa, Manager – Merchant Relationships, Digital Products and Card Sales at Sampath Bank (1st from left), and Shehan Adikari, Co-Founder and Chief Operating Officer of Apartner (1st from right), look on.

Sri Lanka’s condominium landscape continues to expand at pace, reshaping urban living across the country, yet many residential communities still rely on manual payment methods that slow down collections, delay reconciliations and limit financial visibility for both residents and management corporations.

Responding to this growing gap, Sampath Bank PLC has partnered with Apartner (Pvt) Ltd to digitise condominium payments in Sri Lanka, introducing a secure, real-time payment and settlement framework designed to support smarter, more efficient apartment living. The partnership integrates Visa’s Cybersource payment gateway with Sampath Bank’s API Manager, enabling seamless digital payment collection alongside instant outward settlements and reconciliations.

Speaking on the collaboration, Chirath Samarasekara, Head of Card Centre at Sampath Bank, stated, “Condominium living is becoming a defining feature of modern Sri Lanka and the financial infrastructure that supports it must evolve accordingly. Through Visa’s Cybersource payment gateway and our API Manager, this partnership enables real-time settlements and reconciliations that bring greater transparency, control and predictability to condominium payments while offering residents a secure and convenient digital experience.”

Deshan Dias Bandaranayake, Co-Founder and Chief Executive Officer of Apartner, commented, “This partnership with Sampath Bank allows us to remove one of the biggest operational pain points faced by condominium communities. Real-time payment visibility and automated reconciliation give management corporations confidence in their cash flows while residents gain convenience, security and peace of mind through a platform built for everyday living.”

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A lifetime of tickets: Kalawana retiree preserves a 76-year long lottery trail

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Some of lotteries in Ekanayake’s collection

For many Sri Lankans, buying a lottery ticket is a daily ritual. Some do it out of habit; others try their luck from time to time. Morning crowds gathered around lottery kiosks across the country are testimony to the enduring appeal of the small slip of paper that promises fortune.

But in the quiet village of Dolahena in Kalawana lives a man whose relationship with the lottery stretches far beyond hope of a windfall.

At 88, retired postal worker E. M. D. Bandara Ekanayake has spent more than seven decades buying lottery tickets — and, more remarkably, preserving them. His collection, which dates back to the early years of organized lotteries in Sri Lanka, may well be one of the most extensive personal archives of lottery tickets in the country.

“I started buying lottery tickets in 1962, the year the National Lottery Board was established,” Bandara told the Sunday Island. “At that time a ticket cost only 50 cents, and the top prize was about one lakh of rupees.”

His fascination with lotteries, however, predates the National Lottery Board itself. Bandara recalls purchasing his first ticket in 1959 when a lottery was held in connection with an industrial exhibition.

“From then until today, I have been buying five tickets at a time,” he said. “For about 76 years I have continued this habit.”

Unlike most lottery buyers who discard their tickets once the draw is over, Bandara carefully preserved every ticket he purchased. As a result, he now possesses lottery tickets issued by both the National Lottery Board and the Development Lotteries Board from 1962 to the present.

“I don’t think anyone else has such a collection,” he said with a quiet smile.

Ironically, his decades-long participation has not brought him extraordinary winnings. “Apart from small prizes, the biggest amount I have ever won is Rs. 10,000,” he admitted.

Yet Bandara insists that winning has never been his primary motivation.

“I buy lottery tickets with great interest and enthusiasm, but not because I expect to win,” he said. “The lottery boards contribute a great deal to the development of this country. Funds raised through lotteries support education, health and other development work. I feel a deep sense of satisfaction knowing that I too contribute, even in a small way.”

His dedication to buying tickets has endured despite the difficulties he once faced in obtaining them.

“In the early days there were no lottery sales outlets in the Kalawana area,” Bandara recalled. “The only place we could buy them was at Sinnaiah Stores in Nivitigala. I used to travel by bus to buy the tickets and bring them back. Sometimes I would send someone else to buy them for me.”

Over time, lottery sales expanded to Kalawana itself. Bandara remembers that a trader named P. D. T. Lathpadura Mudalali began selling lottery tickets at the Ranasinghe Hotel, making it easier for locals like him to buy them.

E. M. D. Bandara Ekanayake

From then on, Bandara purchased his tickets locally, but the practice of carefully preserving them remained unchanged.

His passion for collecting does not stop with lottery tickets. Bandara has also maintained an extensive collection of newspapers over the years. Even bus tickets from his journeys have been preserved alongside his treasured lottery slips.

The unusual collection recently drew the attention of officials from the National Lottery Board, who visited Bandara’s home bearing gifts after learning about his decades-long dedication.

For Bandara, however, the recognition is secondary to a larger sense of purpose.

“I will continue buying lottery tickets as long as I live,” he said. “At the same time, I try to help others and engage in social service whenever I can.”

His commitment to community welfare is not merely rhetorical. Using his own funds, Bandara has already built a community hall for the benefit of residents in his village.

“I hope to continue doing social service in the future as well,” he said.

In an era when lotteries are often associated with dreams of instant wealth, Bandara’s story offers a different perspective — one of quiet dedication, civic-mindedness and personal discipline.

For him, the value of a lottery ticket lies not in the promise of riches but in the small contribution it makes towards the collective good.

And after 76 years, that belief remains unshaken.

By Upendra Priyankara Jathungama

 

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