iShares MSCI Austria ETF (EWO US) – Portfolio Construction MethodologyThe underlying MSCI Austria IMI 25/50 Index targets virtually the entire investable Austrian equity universe—large, mid and small caps covering about 99% of free float market cap—while imposing US RIC concentration limits. Austrian listings and eligible ADR/GDRs must satisfy MSCI developed-market investability screens, including 12-month and 3-month ATVR ≥20%, trading frequency ≥90%, and free float ≥0.15. Companies are ranked by free floa ...