This paper uses information on import transactions by German firms from 2009 to 2012 merged with information on characteristics of the importers taken from surveys by the Statistical Offices to document that a large share of importers engage in multiple import sourcing by importing the same good...

This study replicates estimation results from Jennifer Abel-Koch, Who Uses Intermediaries in International trade? Evidence from Firm-level Survey Data, published in The World Economy (2013). In this paper she uses firm-level data from Turkey. The pure replication performed here that is based on...

This paper presents an analysis of the recent developments of average market power in Europe by using a broad firm-level database for EU member states. To indicate competitive pressure at the firm-level, markups are estimated following De Loecker (2011), and De Loecker and Warzynski (2012). The...

We study the influence of social messages that promote a digital public good, a COVID-19 tracing app. We vary whether subjects receive a digital message from another subject, and, if so, at what cost it came. Observed maximum willingness to invest in sending varies, from 1 cent up to 20 euros....

We study how researchers can apply machine learning (ML) methods in finance. We first establish that the two major categories of ML (supervised and unsupervised learning) address fundamentally different problems than traditional econometric approaches. Then, we review the current state of...

Condorcet domains are sets of preference orders such that the majority relation corresponding to any profile of preferences from the domain is acyclic. The best known examples in economics are the single-peaked, the single-crossing, and the group separable domains. We survey the latest...

This paper uses firm level data from the Flash Eurobarometer 421 survey conducted in June 2015 in 34 European countries to investigate the link between having a website and international firm activities in small and medium sized enterprises (SMEs). We find that firms which are present in the web...