AOT Invest launched a software platform exchange-traded fund Tuesday that uses quality metrics rather than market capitalization alone to weight holdings selected from the range of companies building the infrastructure behind modern applications. See more: AOT Launches Leveraged Software Platform ETF SOFL The AOT Software Platform ETF (AOTS) tracks the AOT VettaFi Software Platform Index (SOFT), which ranks companies on three equally weighted factors — cost of goods sold to revenue, earnings-to-price ratio, ...