The classic 'logistic' model has provided a realistic model of the behaviour of Covid-19 in China and many East Asian countries. Once these countries passed the peak, the daily case count fell back, mirroring its initial climb in a symmetric way, just as the classic model predicts. However, in...

We examine the impact of the actual purchases of Treasury securities by the Federal Reserve on the Treasury yields. Using structural stability tests we find significant breaks in the relation between these variables. We find that in the zero lower bound period following the first phase of...

Linear estimators of the affine term structure model are inconsistent since they cannot reproduce the factors used in estimation. This is a serious handicap empirically, giving a worse fit than the conventional MLE estimator that ensures consistency. We show that a simple self-consistent...