Vienna Stock Exchange News

ATX: New free float factor for Immofinanz AG

(Vienna) After its quarterly review, the Vienna Stock Exchange today announces the new calculation parameters for Austrian indices. The free float factor of Immofinanz AG will decrease from 0.7 to 0.3 following the results of the takeover offer (CPI Property Group S.A. increased its stake), thus decreasing the company's weighting in the ATX and other Austrian indices. This change will become effective on Monday, 20 June 2022. The next review of the ATX composition is scheduled for 6 September 2022.

The calculation of Wiener Börse AG's indices is based on a quantitative procedure. According to "The Rules for the Austrian Indices of the Vienna Stock Exchange", the inclusion or exclusion of stocks from Austrian indices is reviewed twice a year (March and September). Decisions on new additions to the index are based on average daily trading volumes and the free float capitalization of companies. The Vienna Stock Exchange reviews the calculation parameters (number of shares, free float factors, representation factors) of the index on a quarterly basis. Once a month, the ATX watchlist is published. In the Index Committee, which met today and decides on the rules and regulations for the indices, representatives of institutional investors, trading members of the Vienna Stock Exchange, financial institutions that issue financial products on the indices, academic advisors and the Vienna Stock Exchange contribute their experience. A list of the Committee members is available online.


Press photos on trading & ATX


For further information, please contact:



Julia Resch

Julia Resch

Head of Corporate Communications & Marketing, Spokesperson

+43 1 531 65-186




Laura Marchler

Laura Marchler

Corporate Communications

+43 1 531 65-153


About the Vienna Stock Exchange

As the main provider of market infrastructure in the region, Wiener Börse AG is the gate to global markets. Operating the stock exchanges in Vienna and Prague, the group offers state-of-the-art systems, information and IT services. Listed companies receive maximum liquidity and investors benefit from fast and cost-effective trading by the market leader. Wiener Börse AG also collects and distributes stock market data and calculates the most important indices of the region. Because of this unique know-how the national stock exchanges in Budapest, Ljubljana and Zagreb trust its IT services. Additionally, the group holds stakes in energy exchanges and clearing houses. 

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ATX Total Return in EUR
Austrian Traded Index in EUR
Immofinanz AG