RT Journal Article T1 Markov-modulated jump-diffusion models for the short rate: Pricing of zero coupon bonds and convexity adjustment A1 López, Oscar A1 Oleaga Apadula, Gerardo Enrique A1 Sánchez, Alejandra AB In this article, we consider a Markov-modulated model with jumps for the short rate. Using the main properties of a telegraphic process with jumps we compute the expected short rate. We obtain closed formulas for the zero coupon bond price assuming the Unbiased Expectation Hypothesis for the forward rates. Next, we obtain the coupled system of partial differential equations for the bond price using only no-arbitrage arguments. Numerical solutions are provided for some selected examples. The results obtained from both methods are compared and allow to estimate the magnitude of the convexity-adjustment. PB Elsevier YR 2021 FD 2021 LK https://hdl.handle.net/20.500.14352/116672 UL https://hdl.handle.net/20.500.14352/116672 LA eng DS Docta Complutense RD 21 abr 2025