Axioma US4 Risk Model Factsheet Axioma USSC4 Risk Model FactsheetAxioma US5.1 MH & SH Risk Model Factsheet Axioma US5.1 Trading Horizon Risk Model Factsheet Related ArticlesBarra US Total Market Equity Trading Model Docs (USFAST)Barra U.S. Equity Model - Daily Horizon (USE4D) DatasheetAxioma Regional Risk Model DocsAxioma Single Country Risk Model Docs