Thailand Stock Exchange (SET)

The Stock Exchange of Thailand (SET) is the national stock exchange of Thailand, providing a platform for the trading of various types of securities, such as equities, bonds, and derivatives. Since its inception, the SET has grown to become a significant player in the Southeast Asian financial market. Below is a comprehensive overview of the SET, covering its history, structure, trading systems, key indices, market participants, regulatory framework, and its role in the Thai and global economy.

History and Overview

The Stock Exchange of Thailand (SET) was established on April 30, 1975, following several years of planning and the establishment of the National Economic and Social Development Board (NESDB). The foundation of the SET was an essential step in formalizing Thailand’s financial markets, which previously existed in a more fragmented and informal manner.

The SET’s mission is to foster a liquid and efficient market as a fundamental pillar for the country’s economic development. It seeks to promote growth in capital markets through technological advancements, improving market quality, and expanding investor base, among others.

Market Structure

Listed Companies and Sectors

SET houses a diverse range of companies across multiple sectors such as Financials, Industrials, Services, Consumer Products, Property, and Technology. This diversity enhances the depth and breadth of the market, attracting a wide array of local and international investors.

As of the latest financial year, SET listed over 600 companies with a combined market capitalization surpassing $600 billion. The exchange is an ideal platform for capital raising efforts for both emerging startups and established corporations.

Trading Mechanism

SET functions as an electronic order-driven market, wherein orders are matched by the exchange’s trading system called “SET CONNECT.” This platform integrates advanced trading technology, facilitating high-speed, efficient transactions. The trading day is divided into several sessions: a pre-opening session, two continuous trading sessions interrupted by a lunch break, and a closing session.

Key trading statistics like price, volume, and value of transactions are publicly disclosed, ensuring transparency and facilitating informed decision-making.

Key Indices

Several indices provide comprehensive insights into the performance of the overarching market, including but not limited to:

  1. SET Index: The flagship index that measures the price movements of common stocks listed on SET.
  2. SET50: Represents the 50 largest companies by market cap.
  3. SET100: Similar to SET50 but includes the top 100 companies.
  4. sSET Index: Inclusion of smaller listed companies, complementing the larger indices.
  5. SETCLMV: Stands for Cambodia, Laos, Myanmar, and Vietnam, focusing on companies with significant business operations in these countries.

Trading Systems and Technology

SET CONNECT

SET CONNECT, introduced in 2012, is the primary trading system employed by the Stock Exchange of Thailand. It integrates pre-trade risk management, market surveillance, and multiple order types and interfaces, supporting an order-driven market. Leveraging high-speed order matching algorithms, SET CONNECT ensures minimal latency and high throughput, accommodating the trading needs of both retail and institutional investors.

SET CONNECT also supports various trading functionalities, including block trading, trading at the turn of market sessions, and various auction mechanisms. This flexibility fosters a resilient trading environment capable of handling diverse market conditions.

Algorithmic Trading

In recent years, algorithmic trading has gained traction on the SET. Utilizing predefined criteria and advanced statistical models, algorithmic trading can execute orders at speeds unmatched by human traders. Market participants often use algorithmic trading for purposes such as arbitrage, market making, and trend following strategies.

Algorithmic trading systems interface seamlessly with SET CONNECT, leveraging its high-speed capabilities to capitalize on fleeting market opportunities. Regulatory measures ensure that these high-frequency trading activities do not compromise market fairness and integrity.

Regulatory Framework

The SET operates under the regulatory oversight of the Securities and Exchange Commission (SEC) of Thailand, established by the Securities and Exchange Act of 1992. This legislative framework mandates stringent controls to ensure market transparency, investor protection, and efficient functioning of the capital market.

Key Regulations

  1. Listing Requirements: Detailed criteria govern the eligibility of companies to list on the SET. These include minimum capital requirements, profitability metrics, and standards of corporate governance.
  2. Disclosure Standards: Companies must abide by rigorous disclosure norms, regularly updating the market on financial performance, material developments, and operational milestones.
  3. Market Surveillance: The SEC employs advanced surveillance mechanisms to detect and prevent market manipulations, insider trading, and other malpractices.

Ethical and Sustainable Investing

In alignment with global best practices, SET emphasizes the importance of Environmental, Social, and Governance (ESG) criteria. Companies are encouraged to adopt sustainable business practices, contributing to broader societal goals.

Key Participants and Institutional Structure

Retail Investors

Retail investors form a significant portion of the trading volume on the SET. Education campaigns and simplified trading platforms have been implemented to foster greater retail participation and financial literacy.

Institutional Investors

Institutional investors, including mutual funds, pension funds, and foreign investors, play a critical role in the SET. These participants bring in substantial capital and liquidity, enhancing the overall stability and depth of the market.

Brokers and Market Makers

Licensed brokers act as intermediaries, facilitating transactions between buyers and sellers. Market makers provide liquidity by continually quoting buy and sell prices for designated securities, playing a pivotal role in maintaining market fluidity.

Economic Impact and Global Positioning

Domestic Role

The SET is a cornerstone of Thailand’s economy, providing a platform for capital accumulation, resource allocation, and wealth generation. Companies raise capital for expansion projects, job creation, and innovation initiatives, driving overall economic growth.

International Integration

Increasingly, the SET has positioned itself as a competitive player in global E-financing. This includes partnerships with other exchanges, cross-listings, and avenues facilitating foreign investment inflows. The market openness enhances Thailand’s visibility and attractiveness as an investment destination.

Sustainable Development and Innovation

The SET takes proactive measures to foster innovation and sustainability practices, aligning with international benchmarks like the United Nations’ Sustainable Development Goals (SDGs). Green bonds, social impact funds, and sustainability-linked products are among the instruments offered.

Practical Information and Resources

Trading Hours

  1. Morning Session: 10:00 AM to 12:30 PM
  2. Afternoon Session: 2:30 PM to 4:30 PM

Market Holidays

The SET operates on a calendar of Thai national holidays, during which the exchange is closed. It is imperative for traders to stay abreast of these dates to plan their trading activities accordingly.

References and Additional Information

For more detailed information, traders and interested parties can visit the official SET website: https://www.set.or.th.


The SET has evolved into a sophisticated and dynamic financial market hub within Thailand and Southeast Asia. Through continued development and strategic initiatives, it seeks to mitigate challenges and leverage opportunities, sustaining its growth trajectory while contributing to the broader economic landscape.