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Ítem Efecto del ciclo de efectivo sobre la rentabilidad de las firmas colombianas(Universidad Icesi, 2006-12-01) Arcos Mora, Mauricio AlejandroThis document analyzes the relation between the efficiency of working capital management and corporate profitability for the period of 2001 through 2004. Using a regression framework, we find a strong negative relation between the number of day the company has to finance its working capital and its profitability. Thus, this paper supports the argument that shorter trade cycles would be accompanied by higher profitability levels.Ítem Valoración de opciones: simulación de Montecarlo y black-scholes(Universidad Icesi, 2013-10-01) Benavides Franco, JuliánThe note presents a methodology to option valuation using Montecarlo simulation with standard spreadsheet tools. The fundamentals of asset prices under the lognormal process are presented, to simulate price trajectories. Maturity prices are simulated to value standard European options. At the end, the simulation results are compared to option prices obtained with the Black-Scholes formula.