SET50 Index and SET100 Index


The SET50 and SET100 Indices are the primary stock indices of Thailand. The constituents of both lists are companies listed on the Stock Exchange of Thailand in Bangkok.

Calculation

The SET50 Index and the SET100 Index were created "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 ". Both indices are calculated from the stock prices of companies that are included in the SET Index, but each index consists of a subset of those stocks by a ranking based on large market capitalization, high liquidity and compliance with requirements regarding the distribution of shares to minor shareholders: those stocks ranked as the top 50 such stocks are the component stocks of the SET50 Index and those ranked as the top 100 — which also includes the top 50 — are the component stocks of the SET100 Index.
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 16 August 16, 1995 and 30 April 2005, which are the respective dates that the two indices were first published and were set to a base value of 1000 points. The base market value is continually adjusted to correspond to changes in the market values of the underlying securities of each index.

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 For every revision, both Index calculations will treat stocks which have been withdrawn as a delisting case and stocks which have been added as a new listing case.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.

Constituents

Constituent companies of the SET50 stock index, as of 30 December 2015:
SET SymbolISINSecurities NameIndustry GroupSectorWeighting
PTTTH0646010007PTTResourcesEnergy & Utilities8.91%
SCCTH0003010Z04Siam CementProperty & ConstructionConstruction Materials7.05%
AOTTH0765010002Airports of ThailandServicesTransportation & Logistics6.32%
ADVANCTH0268010Z03Advanced Info ServiceTechnologyInformation & Communication Technology5.78%
SCBTH0015010000The Siam Commercial BankFinancialsBanking5.18%
KBANKTH0016010009KasikornbankFinancialsBanking4.60%
CPALLTH0737010Y08CP AllServicesCommerce4.51%
BDMSTH0264A10Z04Bangkok Dusit Medical ServicesServicesHealth Care Services4.42%
BBLTH0001010006Bangkok BankFinancialsBanking3.72%
KTBTH0150010Z03Krung Thai BankFinancialsBanking2.98%
PTTEPTH0355A10Z04PTT Exploration and ProductionResourcesEnergy & Utilities2.90%
PTTGCTH1074010006PTT Global ChemicalIndustrialsPetrochemicals & Chemicals2.88%
CPNTH0481B10Z00Central PattanaProperty & ConstructionProperty Development2.70%
INTUCHTH0201A10Y01Intouch HoldingsTechnologyInformation & Communication Technology2.13%
TRUETH0375010004True CorporationTechnologyInformation & Communication Technology2.11%
MINTTH0128B10Z09Minor InternationalAgro & Food IndustryFood and Beverage2.04%
BHTH0168A10Z01Bumrungrad International HospitalServicesHealth Care Services1.96%
CPFTH0101A10Z01Charoen Pokphand FoodsAgro & Food IndustryFood and Beverage1.81%
TOPTH0796010005Thai OilResourcesEnergy & Utilities1.72%
LHTH0143010Z08Land and HousesProperty & ConstructionProperty Development1.42%
BTSTH0221A10Z06BTS Group HoldingsServicesTransportation & Logistics1.39%
GLOWTH0834010009Glow EnergyResourcesEnergy & Utilities1.38%
TMBTH0068010Z07TMB BankFinancialsBanking1.35%
IVLTH1027010004Indorama VenturesIndustrialsPetrochemicals & Chemicals1.31%
DELTATH0528010Z00Delta Electronics TechnologyElectronic Components1.22%
BLATH1016010007Bangkok Life AssuranceFinancialsInsurance1.21%
HMPROTH0661010007Home Product CenterServicesCommerce1.14%
IRPCTH0471010Y04IRPCResourcesEnergy & Utilities1.12%
TUTH0450010Y08Thai Union GroupAgro & Food IndustryFood and Beverage1.05%
EGCOTH0465010005EGCOResourcesEnergy & Utilities1.02%
SCCCTH0021010Z06Siam City CementProperty & ConstructionConstruction Materials0.94%
DTACTH0554010Z06Total Access CommunicationTechnologyInformation & Communication Technology0.92%
TASCOTH0219010Z06Tipco AsphaltProperty & ConstructionConstruction Materials0.80%
BECTH0592010Z06BEC WorldServicesMedia & Publishing0.78%
CENTELTH0176B10Z00Central Plaza HotelServicesTourism & Leisure0.76%
PSTH0878010Y00Pruksa Real EstateProperty & ConstructionProperty Development0.76%
MTH4577010002MK Restaurant GroupAgro & Food IndustryFood and Beverage0.67%
CKTH0530010Z06CH. KarnchangProperty & ConstructionConstruction Services0.63%
SAWADTH5456010005Srisawad Power 1979FinancialsFinance and Securities0.62%
BATH4403010002Bangkok AirwaysServicesTransportation & Logistics0.62%
ROBINSTH0279010Z00Robinson Department StoreServicesCommerce0.62%
TCAPTH0083010Z06Thanachart CapitalFinancialsBanking0.60%
BCPTH0420010Z00Bangchak PetroleumResourcesEnergy & Utilities0.58%
TPIPLTH0212010Z01TPI PoleneProperty & ConstructionConstruction Materials0.54%
TTWTH0961010Y04Thai Tap Water SupplyResourcesEnergy & Utilities0.54%
BANPUTH0148A10Z06BanpuResourcesEnergy & Utilities0.53%
WHATH3871010Z01WHA CorporationProperty & ConstructionProperty Development0.52%
ITDTH0438010Z02Italian Thai DevelopmentProperty & ConstructionConstruction Services0.51%
CBGTH6066010005Carabao GroupAgro & Food IndustryFood and Beverage0.44%
JASTH0418F10Z04Jasmine InternationalTechnologyInformation & Communication Technology0.30%