Stock futures were pointing to a higher open for major indexes on Wednesday ahead of the highly anticipated release of quarterly results by AI investor favorite Nvidia.

Indexes bounced bullishly and some leaders flashed buy signals. Nvidia earnings loom large for AI and the overall stock market.

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.