Analysis and mechanics
Fundamental Analysis Basics
Updated May 28, 2026 · Published May 21, 2026
Earnings, revenue, and valuation concepts for stock pickers.
Fundamental analysis asks what a business is worth based on cash flows, growth, balance sheet strength, and competitive position. Investors compare price to value rather than studying chart patterns alone.
Options add time and volatility to the puzzle: a fairly valued stock can still crush a short-dated call if timing is wrong.
Key questions fundamentals answer
- Does the company grow revenue and earnings?
- Are margins stable or expanding?
- How much debt vs equity?
- Is the stock cheap or expensive vs peers and history?
- What could change the story (regulation, competition, management)?
Common metrics (intro level)
| Metric | Rough idea |
|---|---|
| P/E | Price per dollar of earnings |
| P/S | Price per dollar of sales (useful when earnings negative) |
| EV/EBITDA | Enterprise value vs operating cash proxy |
| Debt/equity | Leverage risk |
| FCF yield | Cash generation vs market cap |
Ratios differ by sector. Banks are not SaaS companies.
Earnings cycle
Quarterly reports move stocks and implied volatility. Before earnings, options often price a larger move than usual (implied volatility). After the report, IV may crush even if direction was right.
Fundamental thesis: “Company will beat and guide up.”
Options risk: “Beat but IV was too high” → long call loses.
Fundamentals vs technicals
| Approach | Focus |
|---|---|
| Fundamental | Business quality, valuation, catalysts |
| Technical | Price action, levels, trends |
Many traders use fundamentals for what to trade and technicals for when and where (strikes near levels).
Long stock vs options expression
- Long stock: full upside, dividends, no expiry.
- Long call: leveraged upside, max loss = premium, theta hurts.
- Covered call: income on stock you would hold anyway.
- Protective put: insurance on stock you own.
Model each in the builder on the same symbol to see payoff differences.
Quality vs value vs growth
Value investors seek cheap vs metrics. Growth investors pay up for faster expansion. Quality fans want stable returns on capital with moats.
Your option strategy should match horizon: fundamentals may be 3-year story; a 2-week call is a different bet.
Red flags fundamentals catch
- Accounting restatements
- Rising receivables faster than sales
- Dilution from repeated stock offerings
- Covenant breaches on debt
These show up before charts break down.
Worked example: earnings beat, stock drops
Company reports revenue up 8% and EPS above consensus. Stock falls 5% after hours.
- Guidance may have softened.
- Margins may have missed.
- The stock may have run up into the print.
Your long $105 call can lose value even on "good" news if price and IV move against you. Fundamentals explain the business; the market prices expectations.
Worked example: simple P/E compare
Stock A: $50 price, $2.50 EPS → P/E 20.
Stock B: $50 price, $5.00 EPS → P/E 10.
B looks cheaper per dollar of earnings. If B is cheap because earnings are cyclical at a peak, the low P/E may be a trap. Context beats one ratio.
Reading filings (where to start)
- 10-K annual report: business, risks, financials
- 10-Q quarterly update
- 8-K material events
You do not need to read every page day one. Skim risk factors and cash flow statement trends.
Catalyst calendar
Earnings, FDA dates, product launches, and Fed meetings move IV. Align option expiration with when your fundamental thesis should prove out, or use longer dated contracts.
Moat and competitive advantage (plain language)
A moat is a durable edge: brand, network, cost, regulation. Moats show up in stable margins and return on invested capital over years. Options on moat names still gap on scandal.
Management and capital allocation
Buybacks, dividends, and debt paydown reveal priorities. Aggressive buybacks at peak prices can destroy value. Fundamentals include how leaders spend cash.
Sector templates
Banks: net interest margin and credit losses. Software: growth and retention. Retail: same-store sales. Compare companies to sector peers, not random names.
When fundamentals lag price
Meme and squeeze moves disconnect price from metrics for weeks. Fundamentals matter for long horizons; short-dated options care about the next move and IV.
Related guides
ThetaViz provides educational tools only. This guide is not investment, tax, or legal advice. Prices, margin requirements, and tax rules change. Confirm details with your broker and qualified professionals before trading.