Market categories
An index groups selected shares into one benchmark; an index CFD tracks price movement without ownership of the underlying shares.
Index methodology determines which companies are included and how their weights affect the benchmark. A price-weighted index behaves differently from a market-capitalisation-weighted index, so a move in one large constituent may have more influence than similar moves in several smaller constituents.
A CFD session may extend beyond the main exchange session for the underlying shares. Liquidity, spreads, and the relationship to the cash index can therefore vary through the day. Check the MetaTrader 5 symbol specification and holiday schedule for the particular instrument.