This paper offers new evidence on informed trading around merger and acquisition announcements from the UK equity and options market. The analysis suggests that in about 25%-33% of events there is abnormal option trading volume during the month that precedes the announcement. Such evidence is...

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...

This paper examines the pattern and profitability of institutional trades around takeover announcements. We find that the trades of funds as a group, either before or after takeover announcements, are not profitable. However, funds whose main broker is also a target advisor are net buyers of...

Merger and Acquisition (M&A) activities are not well-anticipated corporate events in the equity market. Do institutional investors possess material non-public information before M&A announcements? Using a novel methodology that infers high frequency institutional trading, this paper investigates...

This paper analyzes the law and economics of insider trading in the context of takeover bids, focusing on the European regulatory framework. We distinguish between trading by the bidder, by the target and by classical insiders and first address the issue of precisely when information about...

This paper investigates the patterns of directors' trades and returns around takeover announcements. We find that the pre-announcement net value (the difference between buy value and sell value) of directors' trading is positively related to acquirers' announcement period abnormal returns. This...

We contribute to the M&A literature by characterizing the information available to insiders of selling firms during the pre-public takeover negotiations by analyzing insider trading during this period. We show that target insiders increase their net purchases only once bidders start signing...

This study analyzes the effectiveness of the Market Abuse Directive (MAD) in reducing possible profits from insider trading during takeover bids. Exploiting the quasi-experimental setting provided by the introduction of the MAD, our event-study analysis on the Italian market suggests that the...

This study analyzes the effectiveness of the Market Abuse Directive (MAD) in reducing possible profits from insider trading during voluntary tender offers with the purpose of delisting initiated by controlling shareholders. Exploiting the quasi-experimental setting provided by the introduction...

We examine insider trading surrounding takeover rumors in a sample of 1,642 publicly traded U.S. firms. Using difference-in-differences regressions, we find that insider net purchases increase within the year prior to the first publication of a takeover rumor, particularly when rumor articles...