Not sure this comparison is useful over time. Dow components change fairly often over time. Apple, Microsoft, Salesforce, Cisco, Intel, IBM are all components of DJI. Apple and Microsoft are the largest Dow components by Market Cap, and also the largest in NASDAQ. Neither of those were in the DJI in the previous time periods you've circled.
BallaJi
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@RobBiddle, true in a few decades the majority could be Tech companies. Until then the heavier growth weight of Nasdaq is still a factor. Not to mention Nasdaq digital asset exchange once that launches!