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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