Intel will be replaced by Nvidia in the Dow Jones industrial average after a 25 year run, signaling a shift in the semiconductor industry.

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.

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 move is intended to 'ensure a more representative exposure to the semiconductors industry,' according to S&P Dow Jones Indices.

The Dow Jones Industrial Average held most of its midday gains in the afternoon session Wednesday as an inflation report showed price gains were in line with estimates. Meanwhile, a company backed by artificial intelligence giant Nvidia took a dive in the stock market today.