In this paper, I develop a hybrid model that contains elements of both agent based simulations (ABS) as well as analytic Cournot models, to study the effects of firm characteristics, market characteristics, and innovation on market concentration, as measured by a Herfindahl-Hirschman Index...

In this paper we aim at assessing the outcomes of the 2007 Italian reform of the complementary social security and to identify the determinants behind them. The reform gave relevant incentives to workers to switch from investing about 7% of their gross wages into a compulsory defned benefit...

A share price in a stock market can be thought of as arising out of an aggregation procedure. The price of a stock aggregates many individual beliefs into a collective one, the collective will of the market, so to speak. How does this aggregation come about? And is this aggregation fair in the...