This paper documents the evolution of firm mark-ups in the Australian economy using a large and representative database derived from administrative tax data. I find that mark-ups have increased by around 5 per cent since the mid-2000s, which is less than previously documented for Australia, and...

This is a book about the international oil market. It takes a historical perspective on how the market emerged, developed, and became what it is today—the biggest commodity market in the world. It is mature and complex, but far from perfect. Throughout most of its 150-year history, the oil...

In almost all sectors, online services play a much larger role than a few years ago. Data-driven platform models combine an ever greater degree of market power. The associated concentration effect leads to the displacement of medium-sized companies from the market. When looking at the large...

We test whether the generosity of employer-sponsored health insurance facilitates the exercise of market power by hospitals. We construct indices of health plan generosity and the price and volume of hospital services using data from Truven MarketScan for 601 counties from 2001-2007. We use...