BIS ProShares UltraShort Nasdaq Biotechnology is an exchange-traded fund (ETF) designed to provide ultra-short-term inverse performance of the Nasdaq Biotechnology Index. The fund aims to deliver opposite daily performance to the Nasdaq Biotechnology Index and achieves this through the use of leverage, allowing investors to gain twice the inverse return of the Nasdaq Biotechnology Index. Investors can participate in this strategy by purchasing shares of the BIS ProShares UltraShort Nasdaq Biotechnology ETF, thereby realizing investment gains when the Nasdaq Biotechnology Index declines.