AbCellera Biologics, Inc. engages in the development of therapeutic antibodies. It offers antibody discovery platform that searches, decodes and analyzes natural immune systems to find antibodies that can be developed to prevent and treat disease. The company was founded by Carl Lars G. Hensen, Kathleen Lisaingo, Kevin Heyries, Veronique Lecault and Daniel Da Costa on November 8, 2012 and is headquartered in Vancouver, Canada.

ProShares S&P 500 Dynamic Buffer ETF (the "Fund") seeks investment results, before fees and expenses, that track the performance of the S&P 500 Daily Dynamic Buffer Index (the "Index"). The Index is designed to replicate a patent-pending Dynamic Buffer Strategy developed by ProShare Advisors that aims to provide upside participation in an index up to a daily cap, with a buffer designed to protect against the first 1% to as much as 5% of any loss each day. The Index measures the performance of this Dynamic Buffer Strategy based on the S&P 500 Index using a long position in the S&P 500 Index along with three different S&P 500 Index options that have one day to expiration. The three S&P 500 Index options include a purchased put, a written put, and a written call. The purchased put option component of the Index is designed to measure the performance of approximately at-the-money S&P 500 Index put options with one day to expiration. The written put option component of the Index is designed to measure the performance of out-of-the money S&P 500 Index put options with one day to expiration. The written call option component of the Index is designed to measure the performance of out-of-the-money S&P 500 Index call options with one day to expiration.