exists, arbitrage opportunities must also exist. Conversely, at times when arbitrage profits exist, asset markets are … susceptible to self-fulfilling fluctuations. The tight theoretical connection between price volatility and arbitrage is detectable …

medicines conflicts with traditional sources of arbitrage (e.g., price and income differences) and instead is a form of … ‘regulatory arbitrage’ that does not produce equivalent welfare effects. We draw upon a unique dataset that contains records of … regulation, and not by price differences in line with the hypothesis of "regulatory arbitrage". …

convergence before the actual reduction of barriers to arbitrage and the systematic international price differentiation by product …