This paper investigates the effects of a change in the margin rules of the U.S. stock market. These rules determine how much investors can borrow to leverage their investments. Since the 1929 stock market crash, margin loans have been tightly regulated by the Securities and Exchange Act...

We propose a data-based approximation of the effects of trade sanctions. We validate the approximation by comparing it with exact responses simulated from a canonical multi-country multi-sector model. The approximation is palatable for a broad range of elasticities of substitution, except for...

This paper proposes a unified framework to analyse the theoretical properties of forecast combination. The proposed framework not only is useful for deriving all existing results with ease but also provides important insights into two unresolved puzzles of forecast combination. Specifically,...