A stock index comprised of a broad spectrum of U.S. based semiconductor companies launched by the Philadelphia Stock Exchange on December 21, 1993. Originally created as a price weighted index, it was changed to a modified capitalization weighted index on December 31, 2009.
Related information about Philadelphia Semiconductor Index (SOX):
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- Philadelphia Semiconductor Index (SOX) Definition | Investopedia
 A price-weighted index composed of 18 U.S. semiconductor companies primarily   involved in the design, distribution, manufacture, and sale of semiconductors.
 
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 SOX Philadelphia Semiconductor Index Message Board.
 
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- Philadelphia Semiconductor Index News and Video - Morningstar.com
 By Trefis : With a decline of 62%, AMD (NYSE: AMD ) is the worst performer on   the Philadelphia Semiconductor Index (SOX) this year [ AMD Plans to Use ARM ...