Its movement does not mean every share moves the same way. It provides a benchmark for a market or a segment.
Stock market index
In a nutshell
A stock market index summarises movements in a group of securities using a defined calculation method.
On this page
Explained simply
A practical example
Hypothetical example: an index rises from 200 to 210 points, a gain of 5%, even though some constituent shares may have fallen.
Further reading
Source: AMF — Stock market indices.
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What this means
The increase is 5%. It does not necessarily describe each share’s return.
Educational scenarios. Amounts and rates are fictional, not current market conditions.