Während der Bestandszeit des Neuen Markts war eine temporäre Veräußerungssperre auf Anteile der Alteigentümer obligatorisch zwischen der Deutsche Börse AG und dem jeweiligen Emittenten abzuschließen. Dagegen sieht die US-amerikanische Wachstumsbörse Nasdaq ein freiwilliges Modell dieser...

Firm volatilities co-move strongly over time, and their common factor is the dispersion of the economy-wide firm size distribution. In the cross section, smaller firms and firms with a more concentrated customer base display higher volatility. Network effects are essential to explaining the...

We investigate the possibility that the diversification discount is due to differing growth opportunities between diversified and single-segment firms. We do this by comparing diversified business segments with individual single-segment same-industry firms of comparable growth opportunities....

We propose a network model of firm volatility in which the customers' growth rate shocks influence the growth rates of their suppliers, larger suppliers have more customers, and the strength of a customer-supplier link depends on the size of the customer firm. Even though all shocks are i.i.d.,...