The FTSE AIM UK 50 Index index was introduced on 16 May 2005, and is a market capitalisation weighted stock market index incorporating the largest 50 UK companies by capitalisation which have their primary listing on the Alternative Investment Market.
The index is reviewed quarterly, and the constituent companies may change based on market capitalisation data as at the end of February, May, August and November. The index is maintained by FTSE Russell, a subsidiary of the London Stock Exchange Group.
Current constituents of the AIM UK 50 index
ASOSAbcamAdvanced Computer Software GroupAdvanced Medical Solutions GrpAlternative NetworksArbuthnot Banking GroupAmerisur ResourcesArchipelago ResourcesAvanti Communications GroupBlinkxBowLevenBrooks Macdonald GroupClinigen GroupDaisy GroupDart GroupEMIS GroupEland Oil & GasFaroe PetroleumGemfieldsGloboHargreaves ServicesIQEIDOXIGAS EnergyIofinaIomart Group plcJames HalsteadLondon MiningM&C SaatchiM.P. Evans GroupMajestic WineMulberryMonitiseNanoco GroupNicholsNumis CorporationOxford Catalysts GroupPan African ResourcesPlexus HoldingsPolar Capital HoldingsPrezzoQuindell PortfolioRWS HoldingsRockhopper ExplorationSecure Trust BankSirius Minerals PlcSmart Metering SystemsSongbird EstatesTelford HomesThorpe (FW)Young & Cos Brewery A