Robotics index is designed to track the performance of companies engaged in artificial intelligence and robotics segment of the technology, industrial, medical and other economic sectors. These companies are expected to benefit from the increased adoption and utilization of robotics and artificial intelligence. The index is constructed by selecting stocks from the parent index. All stocks from the parent index can be selected which satisfy any of the following criteria-
Index Calculation
Index calculation is done using the free-float market capitalization methodology. At the time of rebalancing of shares/ change in index constituents/ change in investable weight factors, the weight of the index constituents is capped at applicable levels. Weight of such stock may increase between the rebalancing periods.
PR Index Value
Base market capital of the index is the aggregate market capitalisation of each scrip in the index during the base period. The market capitalisation during the base period is equated to an index value of 1000 known as the index base value.
Total Return Index Calculation
This reflects the return one might get if invested in the index portfolio. Only stock price movements are taken into account. However, the price indices do not consider the return from dividend payments of index constituent stocks. To get a true picture, the dividends received from the index constituent stocks also needs to be included in the index movement.
Index Maintenance
Index maintenance has very crucial in ensuring the stability of the index. The indices are reconstituted semi-annually. Additional reconstitution may take place if index constituent undergoes a scheme of arrangement for corporate events such as merger, spin-off or suspension etc. Changes in the index level reflect changes in the market capitalisation of the index which are caused by stock price movements in the market. When a stock is replaced by another stock, the index divisor is adjusted so the change in index market value that results from the addition and deletion does not change the index level.
Source: http://indexcalculations.website2.me/blog/index-calculation-and-maintenance-together