Under normal circumstances, at least 80 percent of the Funds net assets (plus any borrowings for investment purposes) will be invested in the equity securities of U.S. issuers. This policy may be changed without shareholder approval; however, shareholders would be notified upon 60 days notice in writing of any changes. The Fund is actively managed, not designed to track a benchmark, and therefore not constrained by the composition of a benchmark. The Fund primarily invests in the equity securities of large capitalization U.S. issuers that are involved in economic activities that address global environmental or societal challenges that relate to areas such as environmental sustainability and resource efficiency, diversity, equity and inclusion, respect for human rights, product responsibility, human capital management and accountable governance and transparent operations, or are leaders in managing financially material environmental or social risks and opportunities, such as carbon emission management and diversity, equity and inclusion. Economic activities that address environmental and/or societal challenges vary based on the respective industry a company operates in, but examples may include: providing access to finance to demographics that are typically excluded from traditional financing channels, providing affordable and accessible healthy food and other products, growing electric vehicle sales and strategy, and efficient management of natural resources. As described below, the Adviser utilizes a quantitative and qualitative research process that applies the Calvert Principles for Responsible Investment (a copy of which is included as an appendix to the Funds prospectus) to define the investment universe for the Fund.