TRADING BASICS
Financial Terms You Should Know
Written By Will Bell 28 Year Retail Trader
Key Takeaways
🔑 You do not need to memorize Wall Street's entire dictionary.
🔑 A financial metric rarely means much by itself.
🧠 Know what the number is measuring before reacting to it.
Financial Terms You Should Know: 25 Terms Every Stock Trader Should Understand
🟠 Wall Street has a language of its own.
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EPS.
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Float.
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Market cap.
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Margins.
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Free cash flow.
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Dilution.
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Short interest.
You can trade a stock without knowing what every financial term means. Plenty of people do.
The problem shows up when you start researching why the stock is moving.
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A company reports an earnings beat, but margins fell.
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A small-cap announces an offering. EPS increases while the share count falls.
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A company reports record revenue and still loses money.
Suddenly knowing the terminology matters.
You do not need a finance degree.
🟠 You need enough financial vocabulary to understand what you are looking at before putting money behind the ticker.
If I were starting new in the markets here are 25 terms I would learn first.
1. Market Capitalization
Market capitalization, usually shortened to market cap, is an estimate of the total market value of a company's outstanding shares.
A basic calculation is: Share Price × Shares Outstanding = Market Capitalization
If a company has 50 million shares outstanding and the stock trades at $10, its market cap is approximately $500 million.
Why care? Because share price alone tells you almost nothing about the size of the company. A $5 stock can represent a larger company than a $100 stock. Market cap gives the share price context.
2. Shares Outstanding
Shares outstanding are the company's shares currently held by shareholders, subject to the company's reported share structure.
If a company has 100 million shares outstanding, those shares represent the ownership pieces of the company. This number matters because it affects market capitalization and earnings per share.
I also like comparing it over time.
If shares outstanding keep climbing, I want to know why. That can lead directly to another term traders should understand: dilution.
3. Float
The float generally refers to the portion of shares considered available for public trading.
🟠 A company can have 50 million shares outstanding but a considerably smaller float because some shares may be held by insiders, strategic holders, or otherwise not part of the normal public trading supply.
Float gets particular attention in small-cap trading. A relatively small float combined with sudden demand can contribute to sharp price movement. But low float is not automatically bullish. It can make movement faster in either direction.
4. Revenue
Revenue is the money generated from a company's sales before expenses are deducted. You may also hear it called sales or the top line.
If a business sold $500 million worth of products or services during the year, that amount generally contributes to its reported revenue under the applicable accounting rules.
Revenue growth can tell you whether the business is expanding. But revenue alone does not tell you whether the company is profitable. A business can generate billions in sales and still lose money.
5. Net Income
Net income is the profit or loss remaining after the expenses that affect the bottom line have been accounted for.
This is often what people mean when they talk broadly about a company's profits. Suppose a company generates $500 million in revenue and ultimately reports $50 million in net income.
The business produced significant sales and kept some of that money as profit after expenses. If expenses exceed the company's income, it may instead report a net loss.
6. Earnings Per Share
Earnings per share, or EPS, relates a company's earnings available to common shareholders to its weighted-average share count.
If you hear: “The company earned $1.20 per share.” that is an EPS figure. EPS becomes especially important during earnings season because investors often compare reported EPS with prior periods and analyst expectations.
But I would not look at EPS by itself. Check what happened to total earnings and the share count too. Share repurchases or new share issuance can affect EPS.
7. Gross Profit
Gross profit is what remains from revenue after subtracting the direct costs associated with producing goods or delivering services, based on how the company reports those costs.
Suppose a company generates $100 million in revenue and records $40 million in direct costs.
🟠 Gross profit would be approximately $60 million. That $60 million still has other expenses to cover. Gross profit is not the same thing as net income. It is an earlier stop on the income statement.
8. Gross Margin
Gross margin expresses gross profit as a percentage of revenue.
Using our previous example: $60 million gross profit ÷ $100 million revenue = 60% gross margin.
Why watch the percentage? Because it can help show whether the economics of what the company sells are changing.
If revenue rises while gross margin falls sharply, I want to know what happened.
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Maybe input costs increased.
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Maybe prices fell.
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Maybe customers shifted toward lower-margin products.
The percentage gives you a clue.
9. Operating Income
Operating income is the profit generated from the company's operations after operating expenses are considered, but before certain other items that may appear farther down the income statement.
It can help answer: Is the actual operating business producing profit?
A company can have strong gross profit and still report weak operating income because research, payroll, marketing, administrative expenses, or other operating costs are eating through it. That is why moving farther down the income statement matters.
10. Operating Margin
Operating margin compares operating income with revenue. Suppose a company generates $200 million of revenue and $20 million of operating income. Its operating margin would be approximately 10%.
I like watching the direction. If operating margin moves from 7% to 10% to 14%, the business may be becoming more efficient. If revenue grows while operating margin steadily collapses, I want an explanation.
11. Net Profit Margin
Net profit margin compares net income with revenue. If a company generates $1 billion in revenue and earns $100 million in net income, the net margin is approximately 10%.
That means about ten cents of every revenue dollar ended up as net income.
Whether 10% is impressive depends on the business. A retailer and a software company can operate with completely different margin structures. Compare margins with the company's own history and relevant competitors rather than treating one percentage as universally good or bad.
12. Cash and Cash Equivalents
This is money and highly liquid short-term holdings that meet accounting requirements for classification as cash and cash equivalents. I pay particular attention to this number with smaller companies.
Why? Because a company can have tremendous potential and still run out of money. If a business is losing cash quarter after quarter, the existing cash balance can help you understand how much financial breathing room it appears to have.
That can lead directly to questions about financing and dilution.
13. Operating Cash Flow
Operating cash flow shows cash generated or used through the company's operating activities. This can tell a different story from net income. A company may report accounting profits but weak operating cash flow.
Or it may report an accounting loss while producing positive cash from operations. When earnings and operating cash flow appear to be telling very different stories, I want to know why.
14. Free Cash Flow
Free cash flow is commonly used to describe cash remaining after operating cash flow is reduced by capital expenditures, though exact presentations and definitions can vary.
A simplified version is: Operating Cash Flow − Capital Expenditures = Free Cash Flow
Why do investors care? Because it can provide another view of the cash a business produces after spending needed to maintain or expand certain physical assets. Strong free cash flow can give a company options.
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Pay down debt.
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Repurchase shares.
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Pay dividends.
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Make acquisitions.
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Reinvest in the business.
15. Assets
Assets are economic resources reported by the company.
That can include:
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cash,
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inventory,
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accounts receivable,
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property,
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equipment,
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investments,
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and various intangible assets.
🟠 Do not make the mistake of treating every asset like cash. A company reporting $500 million in total assets does not necessarily have anything close to $500 million available to spend tomorrow.
You still need to know what those assets actually are.
16. Liabilities
Liabilities are financial obligations reported by the company. Debt can be one liability, but there are others.
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Accounts payable.
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Lease obligations.
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Accrued expenses.
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Taxes payable.
And more. The balance sheet is partly about understanding the relationship between what the company has and what it owes. A large liability number is not automatically disastrous.
The company's ability to handle those obligations matters.
17. Shareholders' Equity
Shareholders' equity is the residual amount reported after liabilities are subtracted from assets under the accounting equation: Assets = Liabilities + Shareholders' Equity
🟠 Rearranged:
Assets − Liabilities = Shareholders' Equity🟠
It is sometimes described loosely as the accounting value attributable to shareholders. Do not confuse shareholders' equity with the company's stock-market value.
Book accounting and market pricing are different things.
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18. Debt
Debt is borrowed money the company is obligated to repay according to its financing agreements. Debt is not automatically bad. A financially strong business may use debt to expand, make an acquisition, or fund other activities.
The useful questions are more specific.
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How much debt?
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What does it cost?
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When does it come due?
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And does the business generate enough cash to service it comfortably?
A $1 billion debt load means something very different to a highly profitable multinational company than it does to a struggling small-cap.
19. Price-to-Earnings Ratio
The price-to-earnings ratio, or P/E, compares a stock's price with its earnings per share.
A simplified calculation is: Stock Price ÷ EPS = P/E
If a stock trades at $40 and annual EPS is $2, the P/E is approximately 20.
Does a lower P/E automatically mean a stock is cheap? No.
.Does a high P/E automatically mean it is overpriced? Also no.
Growth expectations, business quality, risk, industry, and other factors all affect what investors may be willing to pay for earnings. P/E is a comparison tool, not a verdict.
20. Price-to-Sales Ratio
The price-to-sales ratio, or P/S, compares a company's market value with its revenue. It can be useful when researching companies that generate meaningful revenue but are not yet profitable.
Again, lower does not automatically mean better. Two businesses can have identical revenue and deserve very different valuations because their growth rates, margins, debt, competitive positions, or future prospects differ.
Valuation ratios need context.
21. Dilution
Dilution generally occurs when additional shares are issued and an existing shareholder's percentage ownership is reduced.
Suppose a company has 10 million shares outstanding. It issues another 5 million shares.
There are now more ownership pieces. Existing shareholders still own their shares, but those shares represent a smaller percentage of the larger total.
🟠 Companies can issue stock for legitimate reasons. The trader still needs to understand what happened. Dilution becomes particularly important when researching smaller companies that regularly need outside capital.
22. Public Offering
A public offering generally involves a company selling securities to investors under applicable securities laws and offering documents.
For a trader, the details matter more than the label.
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How many shares?
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At what price?
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How much money is the company raising?
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Are warrants included?
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What does management plan to do with the proceeds?
A financing may strengthen a company's cash position while also increasing its share count. Both things can be true simultaneously.
23. Warrants
A warrant can give its holder the right to purchase shares at specified terms, generally including a set exercise price and expiration conditions. Warrants show up frequently in smaller-company financing structures.
Why should a trader care?
Because exercised warrants can result in additional shares being issued. That can affect the future share count and potential dilution. You do not need to become an expert in every security structure. But if the company has a large number of warrants outstanding, you should at least understand that they exist.
24. Short Interest
🟠 Short interest generally refers to shares that have been sold short and remain outstanding as short positions at the measurement date.
Short sellers are positioning for price declines and may eventually need to buy shares to close those positions.
High short interest can attract attention because rapid price increases may place pressure on short sellers. But a heavily shorted stock does not automatically create a short squeeze.
Sometimes a stock has high short interest because traders have serious concerns about the company. Once again, the number is information. Not a reason by itself to buy.
25. Liquidity
Liquidity describes how readily an asset can generally be bought or sold without causing a large price change. A highly liquid stock may have active buyers and sellers, substantial trading volume, and relatively tight bid-ask spreads.
A thin stock can behave very differently.
You may see a price on the screen without enough shares actually available near that price for your entire order.
This is why liquidity matters before the trade.
A stock can have a fascinating company story, a low float, and a legitimate catalyst while still being difficult to trade.
The chart tells you where the price has been. Liquidity can help tell you what doing business in that stock may actually feel like.
3 Terms Traders Commonly Mix Up
➡️ There are 3 pairs I would keep particularly clear if I were a new trader after 28 years of trading.
Shares outstanding vs. float: Shares outstanding represents a broader share count. Float is intended to estimate the portion available for public trading.
Revenue vs. earnings: Revenue is sales before expenses. Earnings refer to profitability after relevant expenses.
Market cap vs. share price: A low-priced stock does not automatically represent a small or inexpensive company. Market cap incorporates both price and the number of shares.d
Getting those distinctions straight makes a lot of the rest of financial research easier.
Learn the language and the research becomes easier
Once terms such as revenue, EPS, margins, cash flow, float, dilution, and market cap stop sounding foreign, company research becomes much less intimidating.
An earnings report starts making more sense. An offering announcement becomes easier to evaluate. You understand why a rising share count deserves attention.
And when somebody says a stock has a “tiny float and massive short interest,” you know those are two separate pieces of information rather than a guaranteed reason the stock has to move higher.
The vocabulary is not the strategy. It gives you the language needed to understand what you are researching.
And that is a very good place to start.
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