The SET50 and SET100 Indices are the primary stock indices of Thailand

Thailand

Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...

. The constituents of both lists are companies listed on the Stock Exchange of Thailand

Stock Exchange of Thailand

The Stock Exchange of Thailand is the national stock exchange of Thailand. It is located in Bangkok. As of 31 December 2007, the Stock Exchange of Thailand had 541 listed companies with a combined market capitalization of $280 billion. The indices of the stock exchange are SET Index, SET50 Index...

 in Bangkok

Bangkok

Bangkok is the capital and largest urban area city in Thailand. It is known in Thai as Krung Thep Maha Nakhon or simply Krung Thep , meaning "city of angels." The full name of Bangkok is Krung Thep Mahanakhon Amon Rattanakosin Mahintharayutthaya Mahadilok Phop Noppharat Ratchathani Burirom...

.

Calculation

To accommodate the issuing of index futures and options in the future, and to provide a benchmark of investment in the Stock Exchange of Thailand, the SET50 Index and the SET100 Index were launched. Both indices are calculated from the stock prices of the top 50 and 100 listed companies in the SET Index in terms of large market capitalization, high liquidity and comply with the requirement regarding the distribution of shares to minor shareholders, etc.

The calculation method used for these two indices is the same as that used for the SET Index which is a market capitalization weighted index. The base dates used are August 16, 1995 (SET50 Index) and April 30, 2005 (SET100 Index), which are the respective dates when the two indices were established and set at 1000 points. The base market value is continually adjusted to correspond to changes in the values of securities resulting from changes in the number of stocks due to various events; such as public offerings, exercised warrants, conversions of preferred to common shares, etc.

Stock revision

The list of component stocks in the SET50 Index and the SET100 Index are revised every six months in order to adjust for any unexpected changes that have occurred in the stock market such as new listings or public offerings. After these adjustments are made, stocks that meet the necessary qualifications are then selected to become part of the SET50 Index or the SET100 Index. Stock selection is conducted semi-annually between December 1–31 and June 1–30. During these two periods, The Stock Exchange of Thailand will select stocks based on its pre-stipulated criteria.
The revised stock lists for both the SET50 and the SET100 will be announced to the general public as soon as the lists become available. New SET100 and SET50 Indices will take effect on the first trading day in January and July of each year. For every revision, both Index calculations will treat stocks which have been withdrawn as a delisting case and stocks which have been added as a new listing case. Whenever a stock is removed from either or both of the indices, a new stock will be added to replace it and to ensure the uninterruption of the indices. Also, adjustments will be made whenever the market value of a component stock changes due to the conversion of convertible bonds, the exercising of warrants, or new shares are issued for capital increase of the component stock, etc.

SET50 and SET100 sortable table

Constituent companies of the SET50 and SET100 stock indices, for 1 Jan 2011 through 30 June 2011:

{|
|- style="vertical-align:top;"
|
{|class="wikitable sortable"
|-
!Company
!SET Symbol
!SET50
!Industry Group
!Sector
|-
|Advanced Info Service

Advanced Info Service

Advanced Info Service PCL is Thailand's largest GSM mobile phone operator with 28.8 million customers as of February 2010. Founded in April 1986, AIS started off as a computer rental business...

|ADVANC
|SET50
|-
|Amata Corporation
|AMATA
|
|-
|Airports of Thailand

Airports of Thailand

Airports of Thailand Public Company Limited is a large Thai public company, which handles several national airports. Its headquarters are in Don Mueang District, Bangkok....

|AOT
|SET50
|-
|Asian Property Development
|AP
|
|-
|Asia Plus Securities
|ASP
|
|-
|Banpu

Banpu Public Company Limited

Banpu Public Company Limited is a mining and power company in Thailand. It has coal mining operations in Thailand, Indonesia and China, and coal-fired Power generation operations in Thailand and China...

|BANPU
|SET50
|Resources
|Energy & Utilities
|-
|Bank of Ayudhya
|BAY
|SET50
|Financials
|Banking
|-
|Bangkok Bank

Bangkok Bank

Bangkok Bank Public Company Limited , is a Thai commercial bank, with approximately US$64.6 billion in total assets. Its branch network includes over 1000 branches within Thailand, with 25 international branches or representative offices in 13 economies, spanning ASEAN and major economic countries,...

|BBL
|SET50
|Financials
|Banking
|-
|Bangchak Petroleum
|BCP
|
|-
|BEC World
|BEC
|SET50
|-
|Bangkok Expressway
|BECL
|
|-
|Bangkok Dusit Medical Services
|BGH
|SET50
|-
|Bumrungrad International Hospital
|BH
|SET50
|-
|Big C
|BIGC
|SET50
|-
|Bangkok Life Assurance Public Company Limited
|BLA
|
|-
|BTS Group Holdings Public Company Limited
|BTS
|SET50
|-
|Cal-Comp Electronics
|CCET
|
|-
|Central Plaza Hotel Public Company Limited
|CENTEL
|
|-
|CH Karnchang
|CK
|
|-
|CP ALL

CP ALL

CP ALL Public Company Limited, formerly known as CP Seven Eleven Public Company Limited, is the flagship company of the Charoen Pokphand Group’s marketing and distribution business...

|CPALL
|SET50
|-
|Charoen Pokphand Foods

Charoen Pokphand Foods

Charoen Pokphand Foods Public Company Limited is Thailand's largest agribusiness firm. It is a publicly traded subsidiary of the Charoen Pokphand Group....

|CPF
|SET50
|Agro& Food Industry
|Agribusiness
|-
|Central Pattana

Central Pattana

Central Pattana is Thailand's largest retail property development and management arm of the Central Group, Central Pattana was founded on with a registered capital of 300 million baht...

|CPN
|SET50
|-
|Dynasty Ceramic Public Company Limited
|DCC
|SET50
|-
|Delta Electronics Thailand
|DELTA
|SET50
|-
|Total Access Communication
|DTAC
|SET50
|-
|Electricity Generating

Electricity Generating Authority of Thailand

The Electricity Generating Authority of Thailand , , is a state enterprise that owns and manages the majority of Thailand's electricity generation capacity, as well as the nation's transmission network.EGAT is managed by the Ministry of Energy....

|EGCO
|SET50
|Resources
|Energy & Utilities
|-
|Esso Thailand
|ESSO
|SET50
|Resources
|Energy & Utilities
|-
|GFPT Public Company Limited
|GFPT
|
|-
|GJ Steel
|GJS
|
|-
|Glow Energy

Glow Energy

Glow Energy PCL is a power and utility company in Thailand. The company was established in 1993. Glow Energy is one of the largest private electricity generators in Thailand...

|GLOW
|SET50
|Resources
|Energy & Utilities
|-
|G Steel
|GSTEEL
|
|-
|Hana Microelectronics
|HANA
|SET50
|-
|Hemaraj Land and Development
|HEMRAJ
|
|-
|Home Product Center
|HMPRO
|
|-
|Indorama Ventures Public Company Limited
|IVL
|SET50
|-
|IRPC
|IRPC
|SET50
|Resources
|Energy & Utilities
|-
|Italthai Industrial Group

Italthai Industrial Group

Italian-Thai Industrial Company Limited is a Thai industrial company established in 1964 that began in energy and transportation and has gradually ventured into other fields and has become a group of industries...

|ITD
|
|-
|Jasmine International
|JAS
|
|-
|Kasikorn Bank

Kasikorn Bank

Kasikornbank Public Company Limited formerly known as the Thai Farmers Bank was established on 8 June 1945 by Choti Lamsam, with registered capital of Baht 5 million and has been listed on the Stock Exchange of Thailand since 1976...

|KBANK
|SET50
|Financials
|Banking
|-
|Kim Eng Securities Thailand
|KEST
|
|-
|KGI Securities
|KGI
|
|-
|Bangkok Chain Hospital
|KH
|
|-
|Kiatnakin Bank

Kiatnakin Bank

Kiatnakin Bank is a full-service bank based in Thailand. The bank was founded in 2005 in Bangkok with 17,000 million baht in funds, and has grown to 52 branches and is listed on the Stock Exchange of Thailand's SET50 Index. The company headquarters are located in Bangkok...

|KK
|SET50
|Financials
|Banking
|-
|Kulthorn Kirby Public Company Limited
|KKC
|
|-
|Khon Kaen Sugar

Khon Kaen Sugar

Khon Kaen Sugar is a sugar-manufacturing company based in Thailand. Its corporate headquarters are located in Bangkok. Principal manufacturing facilities are located in Khon Kaen of northeastern Thailand.-History:...

|KSL
|SET50
|-
|Krung Thai Bank

Krung Thai Bank

Krung Thai Bank Public Company Limited is the state-owned bank under the license issued by the Ministry of Finance.- History :The bank was incorporated on March 14, 1966 through the merger of Agriculture Bank Limited and Mondhon Bank Limited, which the government was their major shareholder...

|KTB
|SET50
|Financials
|Banking
|-
|Kang Yong Electric Public Company Limited
|KYE
|
|-
|Lanna Resources
|LANNA
|
|-
|Land and Houses

Land and Houses

-External links:*...

|LH
|SET50
|-
|Loxley Public Company Limited
|LOXLEY
|
|-
|LPN Development
|LPN
|
|-
|Major Cineplex Group
|MAJOR
|
|-
|Siam Makro
|MAKRO
|SET50
|-
|MCOT

MCOT

MCOT Public Company Limited )) is a Thai media conglomerate. Its origins date back to the creation in 1955 of Thailand's first television broadcaster, The Thai Television Company Limited. In 1977, this company was reconstituted as a state enterprise, the Mass Communications Organization of Thailand...

|MCOT
|
|-
|Minor International

Minor International

Minor International is a hospitality company operating over 1,000 restaurants and 30 hotels in the Asia-Pacific and Middle East regions and Africa...

|MINT
|SET50
|Agro& Food Industry
|Agribusiness
|-
|Padaeng Industry Public Company Limited
|PDI
|
|-
|Phatra Securities
|PHATRA
|
|-
|Preuksa Real Estate
|PS
|SET50
|-
|Precious Shipping
|PSL
|
|-
|PTT Public Company Limited

PTT Public Company Limited

PTT Public Company Limited, PTT PCL, or simply PTT is a Thai state-owned SET-listed oil and gas company. Formerly known as the Petroleum Authority of Thailand, it owns extensive submarine gas pipelines in the Gulf of Thailand, a network of LPG terminals throughout the Kingdom, and is involved in...

|PTT
|SET50
|Resources
|Energy & Utilities
|-
|PTT Aromatics and Refining
|PTTAR
|SET50
|Resources
|Energy & Utilities
|-
|PTT Chemical
|PTTCH
|SET50
|-
|PTT Exporation and Production
|PTTEP
|SET50
|Resources
|Energy & Utilities
|-
|Quality Houses
|QH
|SET50
|-
|Ratchaburi Electricity Generating
|RATCH
|SET50
|Resources
|Energy & Utilities
|-
|Regional Container Lines
|RCL
|
|-
|Robinson Department Store

Robinson Department Store

Robinson Department Store is a Thai department store chain. It was established in 1979 and was merged with Central Group in 1995...

|ROBINS
|SET50
|-
|Rojana Industrial Park Public Company Limited
|ROJNA
|
|-
|Samart Corporation
|SAMART
|
|-
|Samart Telcoms Public Company Limited
|SAMTEL
|
|-
|SC Asset
|SC
|
|-
|Siam Commercial Bank

Siam Commercial Bank

Siam Commercial Bank is a bank from Thailand, based in Bangkok.- History :Established by Royal Charter in 1907, Siam Commercial Bank PCL was Thailand's first bank. At the time of its establishment, the only banks in the country were branch offices of foreign banks...

|SCB
|SET50
|Financials
|Banking
|-
|Siam Cement

Siam Cement

The Siam Cement Public Company Limited or SCG is the largest cement company in Thailand. It is listed on the Stock Exchange of Thailand. In 2011, it was also ranked as the 2nd largest company in Thailand and the 620th largest company in the world by Forbes 2000.It was founded under the Royal...

|SCC
|SET50
|-
|Siam City Cement
|SCCC
|SET50
|-
|Sansiri Public Company Limited
|SIRI
|
|-
|Siamgas And Petrochemicals Public Company Limited
|SGP
|
|-
|Supalai Public Company Limited
|SPALI
|
|-
|Stars Microelectronics (Thailand) Public Company Limited
|SMT
|
|-
|Sahaviriya Steel Industries Public Company Limited
|SSI
|
|-
|Sri Trang Agro-Industry Public Company Limited
|STA
|SET50
|Agro& Food Industry
|Agribusiness
|-
|Sino-Thai Engineering And Construction Public Co.,Ltd.
|STEC
|
|-
|STP&I Public Company Limited
|STPI
|
|-
|SVI Public Company Limited
|SVI
|
|-
|TIPCO Asphalt Public Company Limited
|TASCO
|
|-
|Thanachart Capital
|TCAP
|SET50
|Financials
|Banking
|-
|Thai Airways International

Thai Airways International

Thai Airways International Public Company Limited is the national flag carrier and largest airline of Thailand. Formed in 1988, the airline's headquarters are located in Chatuchak District, Bangkok, and operates out of Suvarnabhumi Airport. Thai is a founding member of the Star Alliance. Thai is a...

|THAI
|SET50
|-
|Thaicom
|THCOM
|
|-
|Ticon Industrial Connection
|TICON
|
|-
|TISCO Financial Group
|TISCO
|SET50
|Financials
|Banking
|-
|TMB Bank

TMB Bank

TMB Bank, formally known as The Thai Military Bank, is one of the largest retail banks in Thailand. It is listed on the Stock Exchange of Thailand on ....

|TMB
|SET50
|Financials
|Banking
|-
|Thai Oil
|TOP
|SET50
|Resources
|Energy & Utilities
|-
|TPI Polene

TPI Polene

TPI Polene Public Company Limited is Thailand's third largest cement manufacturer.It also manufactures petrochemicals, including low-density polyethylene and ethylene-vinyl acetate copolymer ....

|TPIPL
|
|-
|True Corporation

True Corporation

True Corporation Public Company Limited is a communication conglomerate in Thailand. True controls Thailand's largest cable TV provider True Visions, its largest ISP True Internet and its third-largest mobile operator True Move.-History:...

|TRUE
|SET50
|-
|Tata Steel Thailand

Tata Steel

Tata Steel is a multinational steel company headquartered in Jamshedpur, India and part of Tata Group. It is the world's seventh-largest steel company, with an annual crude steel capacity of 31 million tonnes, and the largest private-sector steel company in India measured by domestic production...

|TSTH
|SET50
|-
|Thoresen Thai Agencies
|TTA
|SET50
|-
|Thai Tap Water Supply

Thai Tap Water Supply

Thai Tap Water Supply Public Company Limited is tap water producer and distributor in Nakhon Pathom and Samut Sakorn area for the Provincial Waterworks Authority , to replace the tap water production from the PWA's groundwater wells and to increase the tap water production volume to sufficiently...

|TTW
|SET50
|Resources
|Energy & Utilities
|-
|Thai Union Frozen Products
|TUF
|SET50
|Agro& Food Industry
|Agribusiness
|-
|Thai Vegetable Oil
|TVO
|
|-
|Thai Yuan Metal
|TYM
|
|-
|Tanayong
|TYONG
|
|-
|Vanachai Group Public Company Limited
|VNC
|
|}