In financial markets, professional traders leverage their trades because it allows to trade larger positions with less margin. Violating margin requirements, however, triggers a margin call and open positions are automatically covered until requirements are met again. What impact does margin...

The underpricing of initial public offerings is a well-documented fact of empirical equity market research. Theories explain this underpricing with market imperfections. We study three empirically relevant IPO mechanisms under almost perfect market conditions in the laboratory: a stylized book...

Für Investitionen am Kapitalmarkt spielt die Portfoliotheorie (Markowitz, 1952) eine bedeutende Rolle und bildet nach wie vor eine wichtige Entscheidungsgrundlage für die Strukturierung von Anlageportfolios. Für risikoaverse Anleger ist die Diversifikation der Portfoliobestandteile eine...

A rich history of theoretical models in finance shows that speculation can lead to overpricing and price bubbles. We provide evidence that, indeed, individual speculative behavior fuels overpricing in (experimental) asset markets. In a first step, we elicit individual speculative behavior in a...

In financial markets, professional traders leverage their trades because it allows to trade larger positions with less margin. Violating margin requirements, however, triggers a margin call and open positions are automatically covered until requirements are met again. What impact does margin...

Companies actively manipulate stock price ranges through IPOs, stock splits, and repurchases. Indeed, empirical results suggest that the stock’s price range, whether at a high or low price level, affects market performance. Unfortunately, archival data does not allow us to test the effect of...