Delgado, Francisco; Dumas, Bernard; Puopolo, Giovanni W. - Centro Studi di Economia e Finanza (CSEF) - 2011
In the presence of transactions costs, no matter how small, arbitrage activity does not necessarily render equal all riskless rates of return. When two such rates follow stochastic processes, it is not optimal immediately to arbitrage out any discrepancy that arises between them. The reason is...