The Dow Jones Industrial Average closed above 44000 for the first time on record Monday. The index added around 304 points, or 0.69%, to 44293.13. The climb from 43000—hit 20 trading days ago—was led by Goldman Sachs,

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

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

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.

Short-term bearish investors can profit from declines in the Dow Jones with ProShares Short Dow30 ETF (DOG), but it's not ideal for long-term investment.

The Dow Jones Industrial Average (DJIA) rose into fresh all-time highs on Friday, clipping into 44,000 as stocks lean firmly bullish to close out a record week. The Dow had its best week since October of 2023, rising nearly 5% and piercing record bids three days in a row.

It’s the second time this year that the influential stock market index is seeing a shakeup. Here’s what to know.