Department of Mathematics

Event calendar for the Department of Mathematics

Talk "Rating Under Asymmetric Information" by Prof. Dr. Alexander Szimayer

On Thursday, November 29, 2018 there will be a talk with the title "Rating Under Asymmetric Information" by Prof. Dr. Alexander Szimayer from the University of Hamburg.

The talk takes place at 2 p.m. in Room E4.09 (Bernhard Riemann) at Fraunhofer ITWM.

We study a dynamic signalling game where a firm, by its decision to stay solvent, signals its quality to a rating agency with the rating feeding back into the firm’s cost of capital. Observing the firm’s true cash flow blurred by a persistent measurement error, the error-minimizing rating agency learns dynamically through the firm’s solvency decision. Firms observed with higher measurement error default earlier, inducing directional learning by successively eliminating measurement errors which are too high to be feasible. In a partially separating perfect Bayesian equilibrium in Markov strategies, the firm employs a measurement-error dependent cut-off strategy. We discuss the extensive economic consequences of such a learning mechanism.

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