Russell Microcap Index

The Russell Microcap Index measures the performance of the microcap segment of the U.S. equity market. It makes up less than 3% of the U.S. equity market. It includes 1,000 of the smallest securities in the Russell 2000 Index based on a combination of their market cap and current index membership and it also includes up to the next 1,000 stocks. , the weighted average market capitalization for a company in the index was $535 million; the median market cap was $228 million. The market cap of the largest company in the index was $3.6 billion.

The index, which was launched on June 1, 2005, is maintained by FTSE Russell, a subsidiary of the London Stock Exchange Group. Its ticker symbol is ^RUMIC.

Records
In February 2021, during the everything bubble, a record 14 members of the index exceeded the market capitalization of the smallest member of the S&P 500 Index.

Investing
The Russell Microcap Index is tracked by the iShares Micro-Cap ETF (nyse arca: IWC).

Top 10 holdings
(as of December 31, 2016)
 * Mercury Systems (nasdaq: MRCY)
 * Centerstate Banks (nasdaq: CSFL)
 * Lakeland Financial (nasdaq: LKFN)
 * Merit Medical Systems (nasdaq: MMSI)
 * Team Inc (nyse: TISI)
 * Patrick Industries (nasdaq: PATK)
 * Synergy Pharmaceuticals (nasdaq: SGYP)
 * Hanmi Financial (nyse: HAFC)
 * Aerie Pharmaceuticals (nasdaq: AERI)
 * Stewart Information Services (nyse: STC)

Top sectors by weight

 * Financial Services
 * Health Care
 * Consumer Discretionary
 * Technology
 * Producer Durables