GDXJ Rebalance Q1 202515 Mar 2025 08:47
Firstly, I thought it might be beneficial to provide a little background information/education on the subject, as I am not sure everyone understands the basic process behind each rebalance.
Although the GDXJ snapshot takes share price movements into consideration within a rebalance snapshot, this along with other metrics ) predominantly around the share register to enable calculation of the Free Float), all of the metrics will be used to determine the constituents of the index:
1. Whether there are to be new entries or deletions from the index
2. What changes need to be made to the Free Float Factor to be used when calculating each constituents Free Float Market Cap
Once the above in known, when the rebalance is announced it will add up the Free Float Market Cap of all constituents, and calculate the weighting as follows:
1. The top 5 by Free Float Market Cap will be allocated 30% of the GDXJ Funds (1=7.0%, 2=6.5%, 3=6.0%, 4=5.5% and 5=5.0%), noting that the Top 5 are determined on a semi-annual basis and will remain as the exact top 5 for the preceding quarter.
2. The other constituents (including new entries) will be allocated the remaining 70% of the GDXJ funds. This will be determined by dividing the Free Float Market Cap for each constituent to fit into this 70%.
You also need to understand that the underlying MVIS index updates on a daily basis to reflect the Share Price movements of each constituent. During this quarter the GGP weighting has fluctuated between 0.71% and 0.95%, currently sitting at 0.94%.
So the fact that GGP has been the the 2nd best performing constituent in the MVIS index since the last rebalance has already been reflected by GGPs weighting increase of 0.71 to 0.94%.
So when the rebalance occurs, if there are no changes to the constituents of the index, and no changes to the Free Float Factor for all of the constituents, there will be NO changes to each constituents weighting (as the weightings will have been have been correctly updated via the daily component updates provided by MVIS during the period).