ProShares UltraShort Nasdaq Biotechnology (BIS) is an exchange-traded fund in the Trading Inverse Equity category. It has $2.25M in assets, an expense ratio of 0.95% and a 5.79% dividend yield. The fund invests in financial instruments that ProShare Advisors believes, in combination, should produce daily returns consistent with the Daily Target. The index is designed to measure the performance of a set of Nasdaq-listed biotechnology and pharmaceutical companies. Under normal circumstances, the fund will obtain inverse leveraged exposure to at least 80% of its total assets in components of the index or in instruments with similar economic characteristics. The fund is non-diversified.