Dow Jones Industrial Average
Jump to navigation
Jump to search
https://en.wikipedia.org/wiki/Dow_Jones_Industrial_Average
It measures price-weighted average of stock prices (higher stocks weigh more). This has little to do with actual market volume, as it does not consider the amounts sold. So it's only a relative measure of a trend.
For example, study the value from 1980 over 40 years as it moves from 1000 [1]