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

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.

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.

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.

Nvidia Corp., the chipmaker at the heart of the artificial intelligence boom, is joining the oldest of Wall Street’s three main equity benchmarks. The company will replace rival Intel Corp. in the 128-year-old Dow Jones Industrial Average prior to the start of trading on Nov.

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.