During the ATX committee’s semiannual meetings (March and September), decisions regarding additions and removals are made based on the monthly watch list using the 25/25 rule. This means that companies in the prime market with a revenue rank of ≤ 25 and a free float market capitalization rank of ≤ 25 are eligible for inclusion in the index. If a company does not meet these criteria, it may be removed from the index. The general objective is for the ATX to comprise 20 components.
Inclusion
| Company | Revenue rank | Market capitalization rank |
|---|---|---|
| Stock S | 19 | 23 |
Stock S is a candidate for inclusion under the 25/25 rule.
Delisting
| Company | Revenue rank | Market capitalization rank |
|---|---|---|
| Stock V | 22 | 20 |
Stock V is a candidate for delisting under the 25/25 rule.
Further details can be found in the guidelines for the Austrian indices of the Vienna Stock Exchange (PDF file 345 KB)
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