The calendar covers over 7,000 benchmark indices spanning both global and domestic financial markets, with 23 standardized data points captured per index.

Coverage includes leading providers such as S&P Dow Jones Indices, FTSE Russell, and CBOE Indices. The calendar also integrates underlying indices linked to ETFs and derivative contracts for consolidated cross-market visibility.

The announcement date is when an index provider officially publishes details of forthcoming constituent additions or deletions. The effective date is when those changes are applied to the index composition. Both dates are tracked and published for each index in the calendar. However, in some exceptional cases the announcement date is not published by the source — in such instances, the Announcement Date field remains blank.

The data collection team monitors all relevant official index provider sources daily. Scheduled calendar dates are extracted directly from official publications as soon as they become available, ensuring the calendar remains current.

Each index entry includes index-level reference information such as index family, description, calculation currency, launch date, index theme, and weighting methodology. In total, 23 standardized data points are delivered in the Calendar Feed file for each index.

The product is designed for investors, quantitative analysts, index-tracking fund managers, ETF issuers, and financial data teams who need to anticipate and respond to index reconstitution events and integrate that data into downstream analytical and reporting workflows.