Umut Çetin is Professor of Statistics at the London School of Economics, where he is also Co-director of the Financial Mathematics and Statistics bachelor's program. His research interests include stochastic calculus, theory of martingales and Markov processes, linear and nonlinear filtering and market microstructure. He has published numerous papers in peer-reviewed journals, including Springer’s Finance and Stochastics.Albina Danilova is Associate Professor of Mathematics at the London School of Economics (LSE). Her research interests span asymmetric information models, market microstructure, stochastic control, and equilibrium theory.