Abstract
espanolEn este articulo se calibra la estructura temporal de tipos de interes de las obligaciones alemanas garantizadas, asi como se explica su dinamica en un contexto similar al de Jakas (2011, 2012). Sin embargo, en este articulo se utilizan los dos enfoques de los modelos afines: bajo la condicion de no arbitraje y con la violacion de esta condicion. Tambien, de forma similar a Jakas (2011, 2012), el factor de descuento estocastico da cuenta de factores macroeconomicos tales como las expectativas del consumidor, la tasa de desempleo, la tasa de inflacion y la oferta monetaria. En el enfoque de no arbitraje, las curvas de rendimientos se calibran mediante un modelo afin multifactorial de estructura temporal discreto en el tiempo. Curiosamente, cuando se ignora la condicion de no arbitraje, los coeficientes del modelo pueden tomar valores positivos y negativos a lo largo de la curva, algo que no es posible reproducir con la condicion de no arbitraje afin. En general, los resultados empiricos confirman los de la literatura macrofinanciera en el sentido de que los factores macroeconomicos explican en gran medida los movimientos de la estructura de tipos de interes. De forma similar a la literatura sobre la cuestion, se documenta el hecho de que la influencia de las variables macroeconomicas es mas pronunciada en la parte mas baja de la curva. EnglishIn this paper we calibrate the term structure of interest rates of German covered bonds and explain its dynamics in a similar set up to Jakas (2011, 2012). However, two approaches to the affine model are employed here: (i) including and (ii) disregarding the no-arbitrage condition. Similar to Jakas (2011, 2012) the stochastic discount factor (SDF) accounts for such macroeconomic factors as consumer expectations, unemployment rate, inflation rate and money supply. When including no-arbitrage, the yield curves are calibrated using a discrete time affine multifactor term structure model. Interestingly, when the no-arbitrage condition is disregarded, coefficients can take both positive and negative values along the yield curve, something that does not occur with an affine no-arbitrage model. Overall, the empirical findings in this study confirm the observations in the macrofinance literature, suggesting that macroeconomic factors have a strong explanatory power in the movements of the term structure of interest rates. We also find that the influence of macroeconomic variables is more pronounced at the front end rather than on longer maturities
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