Stocks are bracing for a monster week

Earnings season — which starts roughly two weeks after the end of each calendar quarter — has a set pattern.

It starts mostly with banks and financial firms, then works its way through energy stocks and then retailers big and small, including Walmart  (WMT) , Target  (TGT)  and Costco Wholesale  (COST) .

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In the middle of the sequence comes the week of Big Tech reports — from five of the most valuable U.S. companies. They're all in technology. All sport market capitalizations of $1 trillion or more — will be issuing reports.

Related: Analyst revisits Apple stock rating amid new China iPhone 16 data

The five companies represent about 25% of the total market value of the Standard & Poor's 500 Index.

Add in the market cap of Nvidia  (NVDA) , the percentage jumps to roughly 30%. Nvidia's next earnings report comes on Nov. 20.

The five stocks on tap had a fantastic first-half as many investors couldn't get enough of anything related to artificial intelligence.

After a mid-summer sell-off in July, they recovered in September. But they've been basically flat in October, but traders don't see much that could spook markets.

Nvidia, however, has jumped 16.6% this month. On Friday, the shares hit $144.13, briefly topping Apple as the most value company. Reason: Enthusiasm over the rollout of its Blackwell family of graphic processing units, the chief drivers of AI expansion.

Tesla  (TSLA)  shares jumped 22% on Friday because of a bullish third-quarter report and guidance.

A look at the 5 giants on tap this week

Alphabet, Oct. 29

  • Oct. 25 close: $165.27

  • Stock price chg.: YTD: 18.3%. Chg. in October: -0.4%

  • Market Cap: $2.05 trillion

  • Qtr. earnings estimate (avg.): $1.84. Year ago: $1.55.

  • Qtr. revenue estimate (avg.): $86.3 billion. Year ago: $76.7 billion.

Alphabet  (GOOGL) , parent of Google and YouTube, has seen its advertising business, about two thirds of revenue, strengthen this year. Risks include geopolitical tensions, conflicts between the company and non-U.S. regulators, including the European Union. The Justice Department has charged the company with antitrust violations and may seek to break Alpha up.

Microsoft, Oct. 30

  • Oct. 25 close: $428.15

  • Stock price chg. YTD: 13.9%. Chg. in October: -0.5%.

  • Market Cap: $3.18 trillion

  • Qtr. earnings estimate (avg.): $3.09. Year ago: $2.73.

  • Qtr. revenue estimate (avg.): $64.5 billion. Year ago: $49.7 billion.

Microsoft  (MSFT)  shares jumped nearly 19% in the first half of 2024 but have slipped as the AI mania eased. A big question is how much it expects to spend on AI applications and how they will affect the company's core cloud and related businesses.