Begin with the business question, not the fastest percentage
When a company has several businesses, its fastest-growing segment may not explain most of the company's growth. A small division can produce an impressive percentage increase while a larger, slower division contributes more dollars. This guide shows how to separate those questions and keep the result tied to the company's own disclosures.
Start from the company research you are reading in ThesisMemo and follow an available source link to the underlying filing. The product's methodology explains that research factors distinguish reported facts, possible implications and future checkpoints. Use that separation throughout this exercise. Your finished output will be an external worksheet, not a new metric that you assume ThesisMemo calculates automatically.
Write one question at the top: which disclosed business contributed to the change in consolidated revenue, and what remains unexplained? Keeping that question narrow helps you resist turning a successful product story into a conclusion about the entire company.
Find the definitions before copying a table
Read the business description to understand what the company sells, then locate the relevant financial-statement note and management discussion. The SEC's 10-K guide describes these sections and the explanatory role of the notes. Search within the actual filing for the company's segment terminology; do not assume that every product category in a presentation is a reportable segment.
Copy the label exactly. Record whether the table describes business segments, products, geography, customers, or another breakdown. Two tables can describe different views of the same revenue. Adding both together would count the same business twice. A product headline is a useful starting point, but the source table determines what the number represents.
Keep a source URL and table or note heading beside your entry. If you cannot establish the scope, leave the comparison unfinished. A blank cell with a clear question is preferable to a plausible number borrowed from a different table.
Match periods and build a simple revenue bridge
Use the same currency, units, reporting basis and time period for every row. Compare a quarter with the corresponding quarter, or a full year with the corresponding full year. Do not pair a year-to-date segment figure with a quarterly consolidated total. Record fiscal period-end dates rather than assuming the company's calendar matches your own.
Here is a fictional example using millions of dollars. Cedar Systems has two businesses and, for this exercise, no other revenue or intersegment adjustments. Hardware revenue rises from 80 to 88; Services rises from 20 to 30. Consolidated revenue therefore rises from 100 to 118. The businesses contribute 8 and 10 respectively to the 18 increase.
Put those values into separate rows: prior revenue, current revenue and dollar change. Check that both period totals reconcile before calculating any percentages. If a real company's table needs an elimination or other reconciling item, retain that row using the issuer's description rather than forcing the simple example onto it.
Distinguish growth rate, revenue share and growth contribution
In the fictional example, Hardware grows 10 percent: 8 divided by 80. Services grows 50 percent: 10 divided by 20. The consolidated growth rate is 18 percent: 18 divided by 100. Taking a simple average of the two segment rates would give 30 percent, which is not the company's growth rate.
Services supplies about 55.6 percent of the dollar increase, calculated as 10 divided by 18. But it supplies only about 25.4 percent of current revenue, calculated as 30 divided by 118. Those percentages use different denominators and answer different questions. Label them as contribution to the increase and share of current revenue so the reader can reproduce each calculation.
There is another useful representation: relative to the previous consolidated revenue of 100, Hardware adds eight percentage points and Services adds ten percentage points. Together they explain the 18 percent total increase under our assumptions. If total growth is near zero or negative, contribution percentages can become difficult to interpret; show the underlying dollar changes prominently.
Read profit on its own stated basis
Revenue contribution does not establish profit contribution. Before comparing segment profitability, record the exact measure, what costs it includes, and the reconciliation supplied in the filing. Do not rename a reported segment profit measure as consolidated operating income or net income simply because all three contain the word profit.
The SEC's segment-information guidance explains that segment measures presented in conformity with the relevant accounting requirements are not automatically non-GAAP merely because their basis differs from consolidated results. The practical lesson here is to read the definition and reconciliation, not assign a label based on appearance. This tutorial does not attempt to determine an issuer's accounting compliance.
For a separate hypothetical bridge, suppose two segment profit amounts are 12 and 8, followed by 5 of corporate costs, with no other items. The sum of segment profit is 20, while the reconciled result after those costs is 15. Calling 20 the consolidated result would omit the stated cost. In a real filing, use its actual reconciliation and destination measure.
Check whether the comparison still describes the same business
A familiar segment name is not enough to establish comparability. Read the note for changes in organization, acquisitions, disposals, or presentation. If the issuer supplies revised prior-period figures on the new basis, identify them clearly in your worksheet. Do not silently combine an earlier presentation with a later one.
Consider a hypothetical reorganization in which an activity moves from Hardware to Services. A larger Services number might partly reflect that transfer rather than additional sales to outside customers. The question is not whether the new figure is useful; it is whether your comparison isolates the change you intend to measure. Without a comparable prior figure, explain the limitation.
Also keep reported growth separate from management's explanation of it. If the company discusses pricing, units, acquisitions or currency, capture the actual explanation and any quantified bridge. Do not allocate the unexplained remainder to your favorite narrative. Record it as unresolved until the source supports a more specific conclusion.
Bring the evidence back to your research question
Return to the relevant ThesisMemo factor and check its review date against the filing you examined. A source can be newer than the assessment. The live methodology page makes clear that update intervals are intended review cadences, not a guarantee that every new document immediately changes the research. Preserve that timing distinction in your notes.
Write a three-sentence interpretation. First, state the supported observation, such as which business supplied the larger dollar increase. Second, explain the possible significance for the question you started with. Third, state the missing evidence or next checkpoint. Do not treat the arithmetic as proof of future growth, valuation, or the cause of a share-price move.
In the Cedar exercise, Services supplies the larger increase while Hardware remains the larger revenue base. A useful next question is whether the Services increase is repeatable and what profit measure supports its economics. Our invented numbers do not answer either question. Keeping those gaps visible is the point of the worksheet.
Save a worksheet another reader can check
Keep these fields together: source location, segment definition, period, currency and units, prior revenue, current revenue, dollar change, growth rate and reconciliation. Add separate fields for the profit measure and its adjustments. Store the worksheet in your own document or spreadsheet; this guide does not assume an in-product segment calculator or note editor.
Before finishing, reproduce the totals from the original source, check every denominator, and mark any estimate or hypothetical value. Then ask whether your conclusion is stronger than the evidence. A company can report strong growth in one area while another offsets it; a revenue contributor can have economics that require a separate investigation.
Choose one future disclosure to revisit and preserve today's source version. When the next report appears, compare both the numbers and their definitions. A consistent process should help you recognize genuine changes without manufacturing a tidy explanation where the company has not provided one.
Product references
Questions & answers
Does the fastest-growing segment contribute the most growth?
Not necessarily. Its starting size matters. In the fictional Cedar example, compare the dollar increases as well as the percentage rates. A small business can grow quickly without supplying most of consolidated growth. Keep the growth rate, share of revenue and contribution to the dollar increase separately labeled.
Can I average segment growth rates to get company growth?
A simple average generally ignores the different starting revenue bases. Reconcile the segment values and any stated adjustments to consolidated revenue first, then calculate the total change against the prior consolidated amount. In our simplified example, averaging 10 percent and 50 percent gives the wrong result.
Is segment profit the same as net income?
Do not assume so. Read the exact measure and the issuer’s reconciliation to the consolidated financial statements. Corporate costs and other disclosed adjustments may sit outside individual segment measures. A required segment disclosure is also not automatically non-GAAP just because its basis differs from the consolidated result.
What if the company changes its segment structure?
Check whether the filing provides comparable earlier figures and explains the reorganization. Record the new scope and the basis of any revised figures. If a like-for-like comparison cannot be supported, describe that gap rather than combining incompatible tables and presenting the result as organic growth.
Does ThesisMemo build this segment worksheet for me?
This tutorial describes a manual research workflow using company information and available source links. Keep the calculations in your own document or spreadsheet. Check the product page’s dates and the original filing, and do not assume that every company has a complete segment model or automatically updated reconciliation.