Vienna Stock Exchange News

Launch of RDXxt - RDX Extended Index


As of March 1, 2007, Wiener Börse will calculate the RDXxt - RDX Extended Index. RDXxt is a capitalization-weighted index and is made up of at least 15 most traded ADRs/GDRs of Russian blue chip stocks. The ADRs/GDRS are continuously traded at London SE on IOB. Calculated in USD and EUR and disseminated in real-time by Wiener Börse, the RDXxt is designed as tradable index to be used as underlying for standardized derivatives (futures & options) as well as for ETFs and other structured products.

ShortFull nameISINStart valueStart date
RDXxt USDRDX Extended in USDAT0000A03NM71,0003 Jan 2005
RDXxt EURRDX Extended in EURAT0000A03NN51,0003 Jan 2005

RDXxt main features


  • The index is UCITS and CFTC compliant.
  • Only ADRs/GDRs (for Russian ordinary shares) traded at LSE are eligible for inclusion.
  • The RDXxt is calculated on every day that the LSE is open for trading. In the case of an exchange holiday in Austria and an open market at LSE, the index is calculated.
  • Real-time calculation and dissemination (9:00 to 17:00 CET).
  • Only the prices generated through electronically matched trades (“Automatic Trades”) are considered for the calculation of RDXxt.
  • No index adjustments due to dividend payments.
  • Semi-annual changes of number of the index constituents (March / September).
  • Quarterly review and adjustments of the weighting factors.
  • The effective free float of a company is tracked by free float factors: 0.25 – 0.5 – 0.75 – 1.
  • The representation factors can take values between 0.01 and 1.00 and is used to avoid an index member exceeding a maximum weighting cap of 10%.
  • New index values are triggered by new traded prices in the index members or by new exchange rates USD/EUR (updates every 2 minutes).
  • The changes to the index composition are decided by the Committee on a quarterly basis.
  • All decisions regarding the index are taken by the RDXxt committee at its quarterly meetings.