SOLR is an ETF version of a mutual fund that launched in 2006. Both SOLR and the fund utilize a proprietary methodology, based on fundamental research, for stock selection. The adviser identifies global companies whose businesses are focused on renewable energy or improving energy efficiency along four key areas: energy generation, installation, displacement and electrification. Each stock is analyzed for consistency of cash flow, return on invested capital, profitability, and comparison to industry peers. The adviser selects a narrow basket, typically 35 holdings, and generally weights each position equally in the portfolio. Prior to January 4, 2022, the funds ticker was SULR.