aztrix![]() Veteran ![]() Posts: 116 Joined: 6/16/2004 Location: Sydney, NSW, Australia ![]() | Thanks again Barry I think you'll find that the constituents of most indexes change quarterly or annually but some almost instantaneously e.g. sector indices, even the Dow Jones Industrial Average, altho it does not change very frequently. I'm pretty sure most S&P indexes including S&P 100, S&P 500, S&P 1500, etc. also change quarterly, not just the S&P ASX indexes. I quote from S&P U.S. Indices Methodology: S&P Equal Weight U.S. Indices. The indices are rebalanced after the market close on the third Friday of the quarter-ending month with weights set to 1/N for each company in the index where N equals the number of companies in the index at rebalancing. At each quarterly rebalancing, companies are equal weighted using closing prices as of the second Friday of the quarter-ending month as the reference price. For those companies having multiple share class lines in the index, each share class line is assigned a weight that is proportional to its FMC as of the second Friday pricing reference date. Since index shares are assigned based on prices one week prior to the rebalancing, the actual weight of each company at the rebalancing differs from the target equal weights due to market movements. S&P Capped Market Cap Weighted U.S. Indices. The indices are rebalanced for reweighting purposes quarterly after the close of business on the third Friday of March, June, September, and December. The rebalancing reference date is the second Friday of March, June, September, and December respectively. Sector Index Reclassifications. A sector index constituent may move from one GICS sub-index to another when a GICS reclassification is made. For any sector index, the company is deleted from the relevant GICS index and added to the other at the time this reclassification occurs for the underlying index. Reference: https://www.spglobal.com/spdji/en/documents/methodologies/methodology-sp-us-indices.pdf In my research I discovered that S&P and Dow Jones have actually merged … |