The SET Index is a Thai composite
stock market index
In finance, a stock index, or stock market index, is an Index (economics), index that measures the performance of a stock market, or of a subset of a stock market. It helps investors compare current stock price levels with past prices to calcul ...
calculated by the prices of all
common stock
Common stock is a form of corporate equity ownership, a type of security. The terms voting share and ordinary share are also used frequently outside of the United States. They are known as equity shares or ordinary shares in the UK and other C ...
s (including
unit trust
A unit trust is a form of collective investment constituted under a trust deed.
A unit trust pools investors' money into a single fund, which is managed by a fund manager. Unit trusts offer access to a wide range of investments, and depending on ...
s of
property funds) on the main board of the
Stock Exchange of Thailand
The Stock Exchange of Thailand (, ; SET) has been the sole stock exchange operator in Thailand since its establishment on 30 April 1975. As of 8 April 2025, with a market capitalization of US$380.19 billion (excluding mai) at an exchange rate ...
(SET), except for stocks that have been suspended for more than one year. It is a market capitalization-weighted price index
which compares the current market value of all listed common shares with its value on the base date of April 30, 1975, when the Index was established and set at 100 points.
The
formula
In science, a formula is a concise way of expressing information symbolically, as in a mathematical formula or a ''chemical formula''. The informal use of the term ''formula'' in science refers to the general construct of a relationship betwe ...
of calculation is as follows:
SET Index = ( Current Market Value x 100 ) / Base Market Value
The SET Index calculation is adjusted in line with modifications in the values of stocks resulting from changes in the number of stocks due to various events, e.g.,
public offerings
A public offering is the offering of securities of a company or a similar corporation to the public. Generally, the securities are to be publicly listed. In most jurisdictions, a public offering requires the issuing company to publish a prospectu ...
,
exercised warrants, or conversions of
preferred to common shares, in order to eliminate all effects other than
price movements from the index.
Besides the SET Index, which is calculated from the stock prices of all common stocks listed on The SET, The SET also provides other indices to investors that include the:
*
Market for Alternative Investment (MAI) Index
*
Industry Group and Sectoral Indices
*
SET50 Index and SET100 Index
Annual Returns
The following table shows the annual development of the SET Index since 1975.
Components
Foods
*
Charoen Pokphand Foods ()
*
Khon Kaen Sugar ()
*
Minor International
Minor International is a Thai multi-national company based in Bangkok, Thailand. The three core businesses of Minor International are hospitality, restaurants, and lifestyle brands distribution, operated under subsidiary companies Minor Hotels ...
()
*
Thai President Foods ()
*
Thai Union ()
Automotive
*
Thai Rung Union Car
Thai Rung Union Car (), formerly known as Thai Motor Corporation (THAMCO), is the first and so far only Thai-based automobile manufacturer, established in 1967 to assemble British Leyland, Leyland vehicles and later Isuzu, Toyota, Nissan, and C ...
()
Consumer electronics
*
I-Mobile ()
Communications
*
Advanced Info Service ()
*
DTAC ()
*
Intouch Holdings
Intouch Holdings PCL (; formerly Shin Corporation) is a Thai holding company which focuses on the telecommunication industry. It is the parent company of Advanced Info Service (AIS), the largest mobile phone operator in Thailand, and Thaicom ( ...
()
*
Thaicom
Thaicom Public Company Limited is a Thai satellite operator and provider of satellite and telecommunication services since 1991. The company operates a fleet of four satellites covering Asia, Oceania, and Africa. Thaicom is a subsidiary of Into ...
()
*
True Corporation ()
Construction material
*
Siam Cement ()
*
TPI Polene ()
Chemicals
*
Indorama Ventures ()
*
IRPC ()
*
PTT Global Chemical ()
Oil & gas
*
PTT Exploration and Production ()
*
PTT Public Company Limited
PTT Public Company Limited or simply PTT () is a Thai Government-owned corporation, state-owned Stock Exchange of Thailand, SET-listed oil and natural gas, gas company. Formerly known as the Petroleum Authority of Thailand, it owns extensive sub ...
()
*
Thai Oil ()
Electric power
*
Glow Energy ()
Steel products
*
Sahaviriya Steel Industries ()
Aviation
*
Bangkok Airways
Bangkok Airways plc () is a regional airline based in Bangkok, Thailand. It operates scheduled services to destinations in Thailand, Cambodia, China, Hong Kong, Laos, Maldives, and Singapore. Its main base is Suvarnabhumi Airport in the Thai cap ...
()
*
Nok Air ()
*
Thai AirAsia ()
*
Thai Airways
Thai Airways International plc () is the flag carrier airline of Thailand. Formed in 1961 as a joint venture between Scandinavian Airlines, SAS and Thai Airways Company, the airline has its corporate headquarters in Vibhavadi Rangsit Road, Chat ...
()
Construction
*
Christiani & Nielsen
Christiani & Nielsen was a construction contractor with major operations worldwide. It still trades in Thailand.
History
Christiani & Nielsen was established by Rudolf Christiani, a Danish civil engineer, and Aage Nielsen, a captain in the Roya ...
()
*
International Engineering Public Company Limited ()
Resources
*
Banpu ()
*
Thai Rubber Latex Corporation ()
*
Thai Tap Water Supply ()
Banking
*
Bangkok Bank ()
*
Bank of Ayudhya
Bank of Ayudhya Public Company Limited, branded and commonly referred to as Krungsri (sometimes stylized as krungsri), is the fifth largest bank in Thailand in terms of assets, loans, and deposits, and one of Thailand’s six Domestic Systemical ...
()
*
Kasikornbank ()
*
Kiatnakin Bank ()
*
Krung Thai Bank ()
*
Siam Commercial Bank
Siam Commercial Bank (; ), officially the Siam Commercial Bank Public Company Limited, is the first Thai bank. It was founded on 30 January 1907 by the appointment of King Chulalongkorn (Rama V).
History
SCB was founded as the Book Club on ...
()
*
Thanachart Bank ()
*
Tisco Bank ()
*
TMB Bank
TMBThanachart Bank (TTB) (; hai Military Thanchart Bank ) is a Thai bank based in Bangkok. It has been listed on the Stock Exchange of Thailand (SET) since 23 December 1983. Piti Tantakasem was appointed CEO effective January 2018.
, TMB was ...
()
Insurance
*
Bangkok Insurance ()
Real estate
*
Areeya Property ()
*
Bangkok Land ()
*
Land and Houses ()
*
Pace Development ()
*
Pruksa Real Estate ()
*
Raimon Land ()
*
Sansiri ()
Retail
*
Central Pattana ()
*
Major Cineplex ()
*
MBK Center ()
*
Robinson Department Store
Robinson Department Store is a Thai owned department store. It was established in 1979 and was merged with Central Group in 1995. It is positioned as a mid-market retailer. The company, Robinson Public Company Limited, was registered in the ...
()
*
Siam Makro ()
*
The Erawan Group ()
Health care
*
Bangkok Dusit Medical Services ()
*
Bumrungrad International Hospital ()
Commerce
*
Berli Jucker ()
*
CP All ()
Media
*
BEC-TERO ()
*
GMM Grammy ()
*
Nation Multimedia Group ()
*
RS Public Company Limited ()
*
Workpoint Entertainment
Workpoint Entertainment Public Company Limited is a Thai media company. The company and its subsidiaries do business in television production, film making, event management, animation, publishing, event marketing and recording. The company was fo ...
()
Transportation
*
BTS Group Holdings
BTS Group Holdings Public Company Limited (BTSG), formerly known as Tanayong Public Company Limited, is a public company in Thailand. It is the majority share holder of Bangkok Mass Transit System PCL (BTSC), the operator of the BTS Skytrain and ...
()
Services
*
AsiaSoft ()
References
External links
Bloomberg page for SET:IND
{{DEFAULTSORT:Set Index
Stock Exchange of Thailand
Thai stock market indices
1975 establishments in Thailand