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beta stock

British  

noun

  1. any of the second rank of active securities on the Stock Exchange, of which there are about 500. Continuous display of prices by market makers is required but not immediate publication of transactions

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012