NEW YORK, Nov. 14 (GenomeWeb News) - Ciphergen Biosystems has been removed from the Nasdaq Biotechnology Index as part of an semi-annual update, the exchange said today.
The index, which can be seen here, currently lists 152 companies. As part of the re-ranking, seven will be removed and 17 added. The changes take effect at the start of trading on Monday, Nov. 21.
The exchange updates NBI semi-annually, in May and November. Securities must meet the maintenance criteria of $100 million in market capitalization and 50,000 shares average daily trading volume to remain in the index. Securities missing the criteria for two consecutive rankings are removed.