Stock Market-Cap Classifications (FINRA)
How FINRA classifies stocks by market capitalization, with the corresponding US-dollar thresholds.
| Classification | Market-cap threshold (USD) |
|---|---|
| Mega-cap | $200 billion or more |
| Large-cap | $10 billion – $200 billion |
| Mid-cap | $2 billion – $10 billion |
| Small-cap | $250 million – $2 billion |
| Micro-cap | Less than $250 million |
Method & sources
Thresholds follow FINRA investor-education content; boundaries vary by provider, and this table uses FINRA's definitions.
Source: https://www.finra.org/investors/insights/market-cap
Retrieved: 2026-09
FAQ
- What does "Stock Market-Cap Classifications (FINRA)" cover?
- It covers Mega-cap, Large-cap, Mid-cap, Small-cap, Micro-cap, compared across: Classification, Market-cap threshold (USD).
- What are the sources and methodology?
- Thresholds follow FINRA investor-education content; boundaries vary by provider, and this table uses FINRA's definitions.
- When was this data last updated?
- The data was retrieved/updated on 2026-09.