This article is based on a lecture at Nihon College of Law in Tokyo and draws on William K.S. Wang & Marc I. Steinberg, Insider Trading (Oxford University Press 3d ed. 2010); and William K.S. Wang, Stock Market Insider Trading: Victims, Violators, and Remedies–Including an Analogy to Fraud in...

This paper shows that studies of announcement effects of bond rating changes should take into account the initial rating. First, we provide theoretical support for different price effects as a non-linear function of the initial credit rating, using a structural, Merton-type model linking the...

The first stock exchanges involved government. The modern stock exchange is strangely devoid of government presence, at least in terms of the decision to halt trading. Meanwhile, over two-hundred billion dollars trades each day on the New York Stock Exchange, one of thirteen recognized domestic...

We examine insider trading in about 3,700 targets of takeovers announced during 1988-2006 and in a control sample of non-targets, both during an ‘informed' and a control period. Using difference-in-differences regressions of several insider trading measures, we find no evidence that insiders...

In this paper we note that unrelated research in the management and finance fields, if combined, makes predictions concerning board reforms in emerging countries. Specifically, outside directors' demographic characteristics that are salient to foreign investors should reduce stock price...

We examine the impact of stock exchange trading rules and surveillance on the frequency and severity of suspected insider trading cases in 22 stock exchanges around the world over the period January 2003 through June 2011. Using new indices for market manipulation, insider trading, and...

This study investigates the effect of a security regulation that occurs concomitantly with International Financial Reporting Standards (IFRS) adoption on the information content of earnings announcements in Italy. To identify the effect of this regulation, we use a treatment (i.e., Italy) and a...

Theory provides competing predictions on the question of whether informed investors immediately trade on newly generated private information. We address this question using SEC-mandated disclosures to identify the dates when new private information about target or acquiring firm value is...

Law and politics had a significant impact on stock market development in Germany between 1870 and the beginning of World War II. IPOs can be a bellwether for stock market development and nearly 1100 were carried out on the Berlin Stock Exchange during this period. Regulatory changes occurring in...