The regulator plays an active role in the IPO process via its pre-IPO communications with firms, writing 3.8 comment letters per company. To evaluate the regulator's input, we analyze these communications between the SEC and firms using LDA-analysis and KL-divergence. Main topics of SEC concerns...

Insiderhandel im Rahmen von Kapitalmarktgeschäften ist immer wieder Gegenstand öffentlicher Diskussionen. Björn Dymke analysiert Kapitalmarkttransaktionen deutscher Unternehmensinsidern mit Wertpapieren der von ihnen geleiteten Unternehmen, sogenannte Directors’ Dealings. Er untersucht, ob...

This paper studies the impact of mandatory portfolio disclosure of mutual funds on the liquidity of disclosed stocks and on fund performance. We consider a theoretical model of informed trading with different mandatory disclosure frequencies. Using a regulation change in May 2004 that increased...

We examine the impact of mandatory portfolio disclosure by mutual funds on stock liquidity and fund performance. We develop a model of informed trading with disclosure and test its predictions using the SEC regulation in May 2004 requiring more frequent disclosure. Stocks with higher fund...