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Affymetrix to Appear on S&P Midcap 400 Index Beginning Dec. 30

NEW YORK, Dec. 28 (GenomeWeb News) - Standard & Poor's will add Affymetrix to its S&P MidCap 400 Index Dec. 30, the Index said yesterday.


Affy will join Beckman Coulter and Invitrogen, the only other genomic tool vendors tracked by the Index.


The Index, launched in 1991, tracks a diverse group of medium-sized UScompanies, according to These companies have a market capitalization of between $2 billion and $10 billion, according to the service. said the MidCap 400 "is an important benchmark for many fund managers who invest in this segment" and it "contains solid firms with good track records that are simply not large enough to be included in the much larger S&P 500 index."


The Index's current constituents can be seen here.

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