iShares Global Clean Energy ETF (ICLN US) – Portfolio Construction MethodologyThe underlying S&P Global Clean Energy Transition Index targets companies from developed and emerging markets with primary business activities across renewable power generation (solar, wind, hydro, biomass, geothermal), enabling equipment, and related clean-energy technologies and services. Constituents are drawn from a global equity universe using exposure scores based on reported revenue and business descriptions; minimum exposu ...