CROBEX is the official share index of the Zagreb Stock Exchange.
[1][2] It is measured using free float market capitalization, where the weight of each individual stock is limited to 10 percent.
[3] For a long time, the Pliva stock was one of the main constituents of the index, before the company was sold and de-listed.
The stock ranking is determined by weighing the stock's free float market capitalization as a proportion of the total, and its traffic as a proportion of the total share traffic in the six-month time period observed.
A special revision can happen to include a new stock in the index in case the stock, in the first 30 days since its listing date, is traded in 100% of the total number of trade days, taking into account its free float market capitalization and share of traffic.