SPDR S&P Software & Services ETF (XSW US) – Portfolio Construction MethodologyThe underlying S&P Software & Services Select Industry Index targets U.S. companies from the S&P Total Market Index classified in Application Software, Systems Software, IT Consulting & Other Services, and Interactive Home Entertainment. Eligibility applies float-adjusted market cap and liquidity screens: new additions generally require ≥USD 500m float-adjusted market cap and a 12-month liquidity ratio (dollar value traded ÷ float ...