The Ultra Nasdaq Biotechnology (BIB) and UltraShort Nasdaq Biotechnology (BIS), will listed on NASDAQ Thursday.
The Ultra Nasdaq Biotechnology seeks investment results that correspond to twice (200%) the performance of the NASDAQ Biotechnology Index for a single day, before fees and expenses, while the UltraShort Nasdaq Biotechnology is built to produce 200% of the inverse performance of the NASDAQ Biotechnology Index for a single day, before fees and expenses.
More information is at http://www.proshares.com.