# Small-cap stock

> A stock of a company with a relatively small market capitalization, commonly defined as roughly $300 million to $2 billion.

Source: https://www.quantisnow.com/glossary/small-cap
Topic: Glossary / Market structure
Also known as: small-cap, small cap stock, small-cap company
Last updated: 2026-10-27

A small-cap stock is a share of a company with a relatively small [market capitalization](https://www.quantisnow.com/glossary/market-capitalization), commonly defined as roughly $300 million to $2 billion. The cutoffs are conventions, not rules, and different index providers draw them differently.

## How it works

Market cap is share price times [shares outstanding](https://www.quantisnow.com/glossary/shares-outstanding). Common bands:

| Category | Typical range |
|---|---|
| Nano-cap | Under $50 million |
| Micro-cap | $50 million to $300 million |
| Small-cap | $300 million to $2 billion |
| Mid-cap | $2 billion to $10 billion |
| Large-cap | Above $10 billion |

The Russell 2000 and the S&P SmallCap 600 are the most cited small-cap benchmarks. Their membership rules differ, so a stock can be "small-cap" in one and not the other.

## Why it matters for traders

Small caps react harder to news than large caps. A single FDA decision, contract or earnings surprise can be material to a $500 million company in a way it never is for a $500 billion one. Analyst coverage is thinner, so filings and press releases often reach the market before any research note.

Other traits to watch:

- **Liquidity.** Lower average volume and wider spreads mean bigger slippage.
- **Financing risk.** Many small caps burn cash and raise equity, so [dilution](https://www.quantisnow.com/glossary/dilution) is a recurring theme.
- **Float matters.** A small [public float](https://www.quantisnow.com/glossary/public-float) amplifies moves in both directions.
- **Rate sensitivity.** Small caps as a group tend to carry more floating-rate debt and are often treated as a bet on domestic growth and lower rates.

## Example

Hypothetical Copperline Energy (ticker CPLE) has 50 million shares at $24, a $1.2 billion market cap, placing it squarely in small-cap territory. If the stock rallies to $44, its market cap reaches $2.2 billion and most screens would reclassify it as mid-cap.

## FAQ

### Are small caps riskier than large caps?

Generally they are more volatile and less liquid, and individual companies are more likely to fail or dilute. They also have more room to grow, which is why they attract risk-tolerant capital.

## Related terms

- [Market capitalization](https://www.quantisnow.com/glossary/market-capitalization.md): The total market value of a company's outstanding shares, calculated as the share price multiplied by the number of shares outstanding.
- [Penny stock](https://www.quantisnow.com/glossary/penny-stock.md): A low-priced, usually small and thinly traded stock, defined by SEC rules generally as an equity security trading below $5 per share.
- [Public float](https://www.quantisnow.com/glossary/public-float.md): The portion of a company's outstanding shares held by non-affiliates, excluding stock owned by officers, directors and controlling holders.
- [Dilution](https://www.quantisnow.com/glossary/dilution.md): The reduction in existing shareholders' ownership percentage and per-share claims on earnings when a company issues new shares.
- [Relative volume](https://www.quantisnow.com/glossary/relative-volume.md): A ratio comparing a stock's current trading volume to its typical volume for the same period, used to spot unusual activity.

## On Quantisnow

- [Companies by market cap](https://www.quantisnow.com/top/market-cap)
- [Short volume screener](https://www.quantisnow.com/screener/short-volume)
- [Company directory](https://www.quantisnow.com/companies)