Transaction-cost models in continuous-time markets are considered. Given that investors decide to buy or sell at certain time instants, we study the existence of trading strategies that reach a certain final wealth level in continuous-time markets, under the assumption that transaction costs,...

Governments worldwide reacted swiftly to the global financial crisis by tougher regulations. This paper investigates the impacts of the regulatory environment on operating costs using panel data of 2,200 German banks over the timeframe from 1999 to 2014. We estimate cost functions with and...

We study mean field games with scalar It^o-type dynamics and costs that are submodular with respect to a suitable order relation on the state and measure space. The submodularity assumption has a number of interesting consequences. Firstly, it allows us to prove existence of solutions via an...

We develop a framework to analyze urban water tariff setting and its welfare implications and apply it to a panel of cities in the People's Republic of China in the 2000s. First, we find that peer cities' water tariff levels have a significant influence on a city's choice of tariffs. We use the...

The existing studies that investigate the effectiveness of yardstick regulation in the Japanese railway industry have presented conflicting conclusions. These previous studies have either compared results before and after the introduction of the yardstick regulation in 1997 or compared companies...