The article analyzes network effects on the German GSM mobile telephony market. The authors use an ACE-approach to examine how a new competitor can successfully gain ground in the market with a discount-pricing strategy. In particular they study the impact of several elements of a mobile phone contract like on-net-, landlineor off-net-fees on the competitor’s market share. It turns out that it ...

This paper studies how software agents influence the market behavior of human traders. Software agents with a passive arbitrage seeking strategy are introduced in a double auction market experiment with human subjects in the laboratory. As a treatment variable, the influence of information on the existence of software agents is investigated. We found that common knowledge about the presence of ...

This study extends the literature of dynamic advertising competition by allowing oligopoly competition and market expansion that results from advertising. We "nd how advertising actions a!ect market development and how, conversely, market development in#uences advertising policies over time. Modelling the competition by a di!erential game, we solve for both time-variant closed-loop and time-inv...

This paper studies how software agents influence the market behavior of human traders. Software agents with a passive arbitrage seeking strategy are introduced in a double auction market experiment with human subjects in the laboratory. As a treatment variable, the influence of information on the existence of software agents is investigated. We found that common knowledge about the presence of ...

One of the most persistent myths in the investment industry is that it makes sense to use an index strategy in efficient markets, for instance with large-capitalization stocks, but to use an active strategy in inefficient segments. It’s important to note that the term inefficient is often used to refer to informational inefficiencies. But investors must also consider the full spectrum of costs ...

In November 2014, OPEC announced a new strategy geared towards improving its market share. Oil-market analysts interpreted this as an attempt to squeeze higher-cost producers, notably US shale oil, out of the market. Over the next year, crude oil prices crashed, with large repercussions for the global economy. We present a simple equilibrium model that explains the fundamental market factors th...