Wall Street in terms of market value, but in the eyes of the 128-year-old Dow Jones Industrial Average, its stock is ranked well below average. The semiconductor maker and leader of the artificial-intelligence boom officially became a member of the venerable index at 9:30 a.

A $1 gain in UnitedHealth would represent only a 0.18% change for the stock, compared to a significant 4.31% move for Intel. For Nvidia, a $1 change would be about 0.74%. Despite these percentage differences, the effect on the Dow remains the same. A $1 move in any Dow stock translates to roughly 6.6 points on the index.

By adding AI darling Nvidia, the Dow Jones Industrial Average will better represent the modern semiconductor industry, S&P Dow Jones Indices said.

The Dow Jones Industrial Average ( ^DJI 0.59%) is making its second major change in 2024. Earlier this year, Amazon ( AMZN -0.89%) replaced Walgreens Boots Alliance. Now, Nvidia ( NVDA -0.84%) is swapping with Intel, and Sherwin-Williams is replacing chemical giant Dow.

The ins and outs of membership in the 30-company group that represents success across industries and reflects stock market conditions.

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.