FREE COURSE · THREE LESSONS + WORKSHEET
Stock fundamentals.
The beginner’s course.
Revenue. Profit. Cash flow. Three connected ideas that help you ask better questions about a company. These short lessons use simplified, fictional examples. They do not tell you which stocks to buy or sell.
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01. Revenue: what the business sells
Revenue measures sales recognized for an accounting period. It is a useful starting point, but it is not the same as profit or cash collected. A company can record a sale before its customer pays. Different business models also recognize revenue in different ways, so the accounting notes matter.
Look behind a growth headline
If reported revenue rises, ask what drove the change. Did the company sell more units, raise prices, acquire another business or benefit from a currency movement? Those explanations can have different implications for how repeatable the growth may be.
Check the comparison period. Comparing a busy seasonal quarter with a quiet one can be misleading. A year-over-year comparison may help, but acquisitions and changes in reporting can still make periods difficult to compare.
A business sold 100 subscriptions at $10 last year and 110 at $11 this year. Revenue rises from $1,000 to $1,210. Both customer volume and price contributed. That tells you nothing yet about expenses or how much cash was received.
Your reading question
In a recent company report, identify one explanation for the revenue change. Separate what the report states from what you infer. Record the report’s date and reporting period.
CHECK YOUR UNDERSTANDING · LESSON 01
Sales rose from $1,000 to $1,210. Does that prove profit increased?
Show the answer +
No. Revenue increased by 21%, but you still need to examine expenses. You also need payment information to understand cash collected. A growth headline does not answer all three questions.
02. Profit: what remains after costs
Profit measures the difference between relevant income and expenses. Gross profit, operating profit and net income describe different stages of the income statement. Check which measure a headline uses before comparing it with another business.
- Gross profit: revenue after subtracting the cost of goods or services sold.
- Operating profit: profit after the business’s operating expenses, such as administration and marketing.
- Net income: the final profit after other applicable income and expenses, including interest and taxes.
These are simplified descriptions. Read the labels and notes in the actual report, because presentation can vary by business and accounting framework.
Profit margins express profit relative to revenue. In a simple example, $20 of profit on $100 of revenue is a 20% margin. If revenue grows but expenses grow faster, profit and the margin can decline. Scale does not automatically mean better economics.
Recurring or unusual?
Asset sales, restructuring charges and other unusual items can affect reported profit. Read the explanation and, where the company presents adjusted figures, the reconciliation to the reported measure. “Adjusted” does not mean the costs should be ignored.
Revenue rises from $100 to $120, but expenses rise from $80 to $108. Profit falls from $20 to $12, and the simplified margin falls from 20% to 10%. Revenue growth alone misses this change.
Your reading question
Which profit measure are you reading? Which expense changed most, and was an unusual item involved? Write down an uncertainty before reaching a conclusion.
CHECK YOUR UNDERSTANDING · LESSON 02
Revenue is $120 and expenses are $108. What is the profit margin?
Show the answer +
Profit is $120 − $108 = $12. Profit margin is $12 ÷ $120 = 10%. That is lower than the earlier 20% margin, even though revenue increased.
03. Cash flow: follow the timing
Accounting profit and cash movement can differ because sales and expenses are not always recorded when money changes hands. Receivables, inventory, payment timing and non-cash expenses can all help explain the difference.
The cash flow statement separates operating, investing and financing activities. Borrowing money can increase cash, for example, without representing cash generated by selling products. Look at the source of the movement, not only the total.
- Operating: cash related to running the business, including customer collections and operating payments.
- Investing: cash used for or received from long-term assets and investments, such as equipment purchases.
- Financing: cash from or paid to capital providers, such as borrowing, issuing shares or repaying debt.
Assume a fictional business records $100 in sales and $80 in expenses, with no other items. It reports $20 of profit. If customers have paid only $70 and the business has paid all $80 of expenses, those transactions reduce cash by $10. The remaining $30 of customer payments is still to be collected. This example omits many real accounting details.
One period is a starting point
A single period of weaker operating cash flow may reflect timing, growth in inventory or other factors. Several periods and the company’s explanations provide more context. Neither profit nor cash flow, by itself, settles whether a share is attractively priced.
Your reading question
What explains the difference between net income and operating cash flow? Does the explanation appear temporary or recurring, and what evidence would help you check?
CHECK YOUR UNDERSTANDING · LESSON 03
Does cash received from borrowing count as cash generated by selling products?
Show the answer +
No. Proceeds from borrowing are a financing cash inflow. They can increase the cash balance without being revenue or cash from selling goods or services. Check the activity category as well as the amount.
Your company-reading worksheet
Use an official annual report or earnings release. This worksheet is for learning and does not require a buy, hold or sell conclusion.
| Question | Your note |
|---|---|
| Company, official source, report date and reporting period | |
| What changed in revenue? Price, volume, acquisition or another cause? | |
| Which profit measure? What happened to costs and margins? | |
| What explains operating cash flow versus reported profit? | |
| One stated fact, one assumption, one open question | |
| What could make this interpretation wrong? |
Business quality and investment price are different questions. A profitable company can still be a risky or expensive investment. Any investment can lose value.
Continue with original sources
For the structure of company financial statements, see the SEC’s introductory guide. For an introduction to ownership and investment risk, see Investor.gov on stocks. These independent sources do not endorse Veyrion.
Course published 24 September 2026. Examples are fictional; the course is not a live market feed. © 2026 Veyrion Laxentum Capital Ltd.
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