Most indexes, like the S&P 500 and Nasdaq Composite, assign a higher weighting to the largest companies by market cap. For example, Apple has roughly 11 times the market cap of Coca-Cola, so it has a much higher weighting in the S&P 500. But in the Dow, Apple is the 12th highest-weighted company by market cap because the index is price-weighted.

The swap reflects their reversal of fortunes within the tech industry and would have been unthinkable a few years ago.

Nvidia is joining the Dow Jones Industrial Average. A look at where one of the largest companies in the world will rank in the key market index.

The historic addition of artificial intelligence (AI) colossus Nvidia may spell trouble for Wall Street's most iconic index.

Chip giant Nvidia will join the Dow Jones Industrial Average, the iconic Wall Street index announced Friday, underscoring the importance of artificial intelligence in the US economy.

Intel will be replaced by Nvidia on the blue-chip Dow Jones Industrial Average index after a 25-year run, underscoring the shift in the chipmaking market and marking another setback for the struggling semiconductor firm.