Key Takeaways
- Tracks ~2,000 smallest U.S. publicly traded companies.
- Leading benchmark for U.S. small-cap stocks.
- Market-capitalization weighted with annual reconstitution.
- High U.S. revenue concentration, diverse sectors.
What is Russell 2000 Index?
The Russell 2000 Index is a market-capitalization-weighted stock index tracking roughly 2,000 of the smallest publicly traded U.S. companies within the broader Russell 3000 Index. It represents about 7% of the total market capitalization of the Russell 3000, making it a key benchmark for small-cap stocks.
This index offers a focused view of U.S.-based smaller companies, often with higher domestic revenue concentration compared to large-cap indices like the S&P 500, providing valuable insights for investors targeting this segment of the market.
Key Characteristics
The Russell 2000's defining features highlight its role as a comprehensive small-cap benchmark.
- Constituents: Approximately 2,000 small-cap companies, which is more extensive than the S&P SmallCap 600.
- Market Capitalization: Weighted average around $3.65 billion, with most companies under $2 billion in market cap.
- Weighting Method: Capitalization-weighted, meaning larger companies have more influence, adjusted through annual rebalancing.
- Sector Diversity: Includes financials, healthcare, industrials, technology, energy, and real estate sectors.
- Domestic Focus: High revenue concentration from U.S. operations compared to multinational-heavy indices.
How It Works
The Russell 2000 is annually reconstituted each June by ranking all Russell 3000 companies by market capitalization. The smallest 2,000 companies form the Russell 2000, while the top 1,000 belong to the Russell 1000. Occasional adjustments occur to incorporate recent IPOs, sometimes pushing the constituent count slightly above 2,000.
Its capitalization-weighted methodology means that stock prices and shares outstanding determine each company’s influence on the index. This dynamic weighting adjusts regularly with market movements, providing an up-to-date reflection of the small-cap investment landscape. Investors often use it as a benchmark for assessing the rate of return of their small-cap portfolios.
Examples and Use Cases
Investors and fund managers frequently turn to the Russell 2000 to gain exposure to smaller U.S. companies with growth potential and domestic economic sensitivity.
- Consumer and Retail: Companies like Macy’s and Crocs represent consumer-focused small caps within the index.
- Industrials and Technology: Firms such as Loral Space & Communications showcase niche technology plays.
- Airlines: While larger airlines like Delta are outside the Russell 2000, the index captures smaller regional carriers and related service providers.
- Investment Vehicles: Many ETFs tracking the Russell 2000 are featured in our guide to the best ETFs, offering cost-efficient small-cap exposure.
Important Considerations
The Russell 2000 provides valuable small-cap exposure but entails higher volatility and company-specific risks compared to large-cap indices. Its domestic focus means it is more sensitive to U.S. economic cycles and policy changes.
When evaluating small-cap investments, consider using risk-adjusted metrics like the Sharpe Ratio to balance potential returns against volatility. For broad portfolio diversification, combining Russell 2000 exposure with mid-cap stocks from guides like the best mid-cap stocks can enhance stability and growth potential.
Final Words
The Russell 2000 Index offers a broad view of U.S. small-cap stocks, reflecting the performance of smaller companies with strong domestic revenue exposure. To leverage this insight, consider evaluating small-cap funds or ETFs tracking the index to diversify your portfolio with a focus on U.S.-based growth opportunities.
Frequently Asked Questions
The Russell 2000 Index is a market-capitalization-weighted stock index tracking around 2,000 of the smallest publicly traded U.S. companies within the broader Russell 3000 Index. It serves as the leading benchmark for U.S. small-cap stocks and reflects the health of smaller domestic businesses.
Unlike the S&P 500 which focuses on large-cap multinational companies, the Russell 2000 tracks smaller U.S. companies with higher revenue concentration from domestic sources. It includes roughly 2,000 small-cap stocks, offering a more comprehensive view of smaller businesses.
The Russell 2000 Index was launched on January 1, 1984, by the Frank Russell Company, now managed by FTSE Russell, a subsidiary of the London Stock Exchange Group. Its origins date back to research efforts starting in 1972.
Each June, the Russell 3000 companies are ranked by market capitalization, and the smallest 2,000 companies are placed in the Russell 2000 Index. This annual reconstitution can temporarily include slightly more than 2,000 stocks due to new IPOs.
As of the end of 2024, the weighted average market cap of Russell 2000 constituents is about $3.65 billion, with a median around $0.99 billion. Most companies have market caps under $2 billion, with the largest around $14.72 billion.
The Russell 2000 includes a diverse range of sectors such as financials, healthcare, industrials, technology, energy, and real estate. This broad sector diversity helps capture the performance of small-cap U.S. businesses across the economy.
Investors can access the Russell 2000 via mutual funds, ETFs with low expense ratios (around 0.10%), futures, or CFDs. It is commonly used as a benchmark for active small-cap funds and complements the Russell 1000 for full U.S. equity coverage.
The Russell 2000 offers insights into the health of smaller U.S. companies, which often have more domestic revenue exposure than large-cap indexes. Since small-cap stocks tend to be more volatile and growth-oriented, the index helps gauge economic vitality and investor sentiment.

