How we calculate the performance
To calculate the performance, weightings are rebalanced or adjusted at the end of every month (meaning that, at the start of the month, the original portfolio structure is "restored"), whereas during the course of the month, a "buy-and-hold" strategy is adopted.
Since the data received from our providers may change retrospectively, we calculate the LPP indices in the following manner.
Each day, the daily performances of the LPP indices for the last 3 months are re-calculated using a 3-month history of the sub-indices. Thus, we ensure that LPP-indices and the underlying sub-indices are consistent.
This procedure implies that there may be changes in the data already published.
Therefore, we kindly advise you to always check our most recent data before using any previously downloaded performance history.