Insmed Announces Addition to the Russell 300...( RICHMOND Va. June 30 /- Insmed Inc. (...)

RICHMOND, Va., June 30 /PRNewswire-FirstCall/ -- Insmed Inc. (Nasdaq: INSM), a biopharmaceutical company, today announced that it has been added to the Russell 3000 Index following Russell Investments' reconstitution of its comprehensive set of U.S. and global equity indexes on June 26, 2009. Insmed was also added to the Russell Microcap(R) Index.

Annual reconstitution of Russell's U.S. indexes captures the 4,000 largest U.S. stocks as of the end of May, ranking them by total market capitalization. Membership in the Russell 3000, which remains in place for one year, means automatic inclusion in the small-cap Russell 2000 Index, as well as the appropriate growth and value style indexes. Russell determines membership for its equity indexes primarily by objective, market-capitalization rankings and style attributes. The Russell 3000 also serves as the U.S. component to the Russell Global Index, which Russell launched in 2007.

Russell indexes are widely used by investment managers and institutional investors for index funds and as benchmarks for both passive and active investment strategies. An industry-leading $4 trillion in assets currently are benchmarked to them. These investment tools originated from Russell's multi-manager investment business in the early 1980s when the company saw the need for a more objective, market-driven set of benchmarks in order to evaluate outside investment managers.

About Russell

Russell Investments provides strategic advice, world-class implementation, state-of-the-art performance benchmarks and a range of institutional-quality investment products. Russell has $136 billion in assets under management as of March 31, 2009, and serves individual, institutional and advisor clients in more than 40 countries. Founded in 1936, Russell is a subsidiary of The Northwestern M
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