Markowitz Models Click on a model link below to view or download the model. The models with a .ltx extension are formatted for traditional LINDO, .lng and .lg4 for LINGO and .xls for What'sBest!. FACTOR.ltx GENPRT.lng LMtestQP.m MARKOW.c MARKSCEN.ltx MARKWTZ.ltx PORTCARD.lng PORTHEDG.lng PORTMTCH.lng PORTVAR.lng PORTAX.lng PORTFOLIO_BASIC.xls PORTFOLIO_CORREL.xls PORTFOLIO_FACT.xls PORTFOLIO_HEDGE.xls PORTFOLIO_MATCH.xls PORTFOLIO_SHARPE.xls PORTFOLIO_TAX.xls PORTFOLIO_TRANS.xls PORTFOLIO_VAR.xls PORTFOLIORF.xls RISKFREE.ltx SEMIVARI.ltx TRANCOST.ltx