Revenue segments are the parts of a business a company reports separately in its filings, and they often show that the business investors think they own is not the one that makes the money. In the second quarter of 2026, Amazon Web Services (AWS) brought in $42.2 billion, 21.1% of Amazon.com's (AMZN) $200.6 billion in sales, but $16.6 billion, or 60.5%, of its $27.5 billion operating income [1][6]. Apple's (AAPL) services were 28.1% of its revenue in the quarter to June 27, 2026, and 42.4% of its gross profit [2][7]. Reading segment data takes three steps: see how revenue splits, see where the profit is, and track how both change over time.
What are business segments, and why do companies report them?
US accounting rules (Accounting Standards Codification Topic 280) require a public company to report its results the way its chief operating decision maker, usually the chief executive, looks at the business when deciding where to spend money. Each such unit is an operating segment. A segment must be reported separately once it passes size tests, including 10% of combined segment profit or loss [10].
The rules were tightened for annual reports for fiscal years starting after December 15, 2023, and for quarterly reports a year later. Accounting Standards Update 2023-07 requires companies to disclose, every quarter, the significant expenses of each segment that management regularly reviews, an amount for other segment items, and the title of the decision maker [10]. Alphabet (GOOGL), for example, now lists employee compensation and other costs for Google Services in its quarterly report [8].
Segments, products and regions are different views
Companies usually publish several breakdowns, and they answer different questions:
- Business segments: the units management runs, usually with an operating profit for each (Amazon: North America, International and AWS) [6].
- Products and services: what customers buy, usually with revenue only (Apple: iPhone, Mac, iPad, Wearables and Services) [7].
- Geography: where customers are, which shows currency, tariff and political exposure.
DataPorium's company pages show each of these views by quarter and by year, taken from the companies' 10-Q and 10-K filings, with the fourth quarter calculated as the full year minus the first three when a company reports it only annually [1].
How do segments show where the profit is?
Revenue share and profit share often differ, because segments have very different margins. The table compares the two for four large companies in their latest reported quarters.
| Company, segment (quarter) | Segment revenue | Share of company revenue | Share of profit | Segment margin |
|---|---|---|---|---|
| Amazon, AWS (Q2 2026) | $42.2 billion | 21.1% | 60.5% of operating income | 39.4% operating |
| Apple, Services (fiscal Q3 2026) | $30.7 billion | 28.1% | 42.4% of gross profit | 75.6% gross |
| Alphabet, Google Cloud (Q2 2026) | $24.8 billion | 20.7% | 21.6% of operating income | 35.6% operating |
| Costco, membership fees (fiscal Q3 2026) | $1.4 billion | 1.9% | Equal to 48.8% of operating income | Not reported |
Source: segment revenue from DataPorium company pages; profit from each company's latest 10-Q; shares and margins are DataPorium calculations [1][2][3][5][6][7][8][9].
Amazon: a retailer funded by a cloud business
Amazon's North America segment had $116.2 billion of sales in the second quarter of 2026 and an operating margin of 7.9%; the International segment earned 4.1% on $42.2 billion [6]. AWS, with almost the same revenue as International, earned $16.6 billion at a 39.4% margin [6]. AWS revenue grew 36.8% from $30.9 billion a year earlier, faster than the company as a whole at 19.6% [1]. Valuing Amazon as a single retailer misses the business that produces most of its profit.
Apple: services carry the margin
The iPhone was still Apple's largest line at $54.3 billion, or 49.6% of the $109.4 billion revenue in the quarter ended June 27, 2026 [2]. But services earned a 75.6% gross margin against 40.1% for products, so $30.7 billion of services revenue produced $23.2 billion of the company's $54.8 billion gross profit [7]. That mix is why investors watch services growth closely even in quarters when iPhone sales lead the headlines.
Alphabet: a cloud business that turned profitable
Google Cloud's operating income rose to $8.8 billion in the second quarter of 2026 from $2.8 billion a year earlier, while Google Services earned $39.5 billion on $94.5 billion of revenue [3][8]. Search and other advertising alone was $63.3 billion, or 52.8% of Alphabet's revenue [3]. The segment note also shows a line many readers skip: "Alphabet-level activities," mainly shared AI research and development, cost $5.8 billion in the quarter and is not charged to any segment [8].
Costco: a membership business with a store attached
Costco Wholesale (COST) collected $1.37 billion in membership fees in the 12 weeks to May 10, 2026, 1.9% of its $70.5 billion revenue [5][9]. Its operating income for the quarter was $2.8 billion, so the fees were equal to almost half of it [9]. Membership fees have almost no direct cost, while merchandise is sold at thin margins; paid members rose to 82.9 million from 79.6 million a year earlier [9].
What do segment trends reveal over time?
A single quarter shows the mix; a series shows where the business is going. Three patterns are worth tracking:
- Concentration: Nvidia's (NVDA) Data Center revenue was $89.0 billion, or 92.5% of total revenue, in the quarter ended July 26, 2026, and sales to hyperscale cloud companies alone were $48.7 billion, 50.6% of the total [4]. A company that depends on one segment, and on a few customers within it, carries that segment's risk.
- Mix shift: AWS rose from 16.1% of Amazon's sales in the third quarter of 2023 to 21.1% in the second quarter of 2026 [1]. A rising share of a high-margin segment can lift company margins even if no single segment improves.
- Redefinitions: Companies change their segments when they reorganize, and restate past periods. Nvidia now splits Data Center into hyperscale and AI cloud, industrial and enterprise customers [4]. Always compare a segment with its own restated history, not with an older report.
Revenue share tells you what a company sells; profit share tells you what investors are really paying for.
How to read segment data in five minutes
- Open the segment note in the latest 10-Q or 10-K (usually titled "Segment Information") and list each segment's revenue and operating income.
- Compute two shares for each segment: of revenue and of operating income. The gap between them is the story.
- Check the unallocated line: corporate costs, eliminations or items such as Alphabet's $5.8 billion of shared AI costs [8].
- Compare growth rates by segment with the company total, year over year.
- Look at the product and region views for concentration in one product, customer group or country.
The segment section of each DataPorium stock page, such as Amazon or Apple, lays out these views by quarter so the shares and trends can be read without opening each filing [1][2].
Frequently asked questions
What is a business segment in financial statements?
It is a part of a company that management reviews separately when deciding how to allocate resources, reported with its own revenue and profit measure. A segment must be reported once it passes size tests such as 10% of combined segment profit [10].
Where do I find a company's revenue by segment?
In the segment note of its 10-Q or 10-K, and in the earnings release. DataPorium's stock pages show the same data by quarter; for example, Amazon's AWS segment had $42.2 billion of revenue in the second quarter of 2026 [1][6].
What percentage of Amazon's profit comes from AWS?
In the second quarter of 2026, AWS earned $16.6 billion of Amazon's $27.5 billion operating income, or 60.5%, on 21.1% of sales [6].
How much of Apple's revenue comes from services?
Services brought in $30.7 billion, or 28.1% of Apple's revenue, in the quarter ended June 27, 2026, and 42.4% of its gross profit [2][7].
Sources & References
- [1] DataPorium Amazon.com (AMZN) stock page (revenue by segment)
- [2] DataPorium Apple (AAPL) stock page (revenue by product and service)
- [3] DataPorium Alphabet (GOOGL) stock page (revenue by segment)
- [4] DataPorium Nvidia (NVDA) stock page (revenue by segment and market)
- [5] DataPorium Costco (COST) stock page (revenue by product, membership fees)
- [6] Amazon.com, Inc., Form 10-Q for the quarter ended June 30, 2026
- [7] Apple Inc., Form 10-Q for the quarter ended June 27, 2026
- [8] Alphabet Inc., Form 10-Q for the quarter ended June 30, 2026
- [9] Costco Wholesale Corporation, Form 10-Q for the quarter ended May 10, 2026
- [10] Financial Accounting Standards Board, Accounting Standards Update 2023-07, Segment Reporting (Topic 280) (November 2023)
