We examine horizontal mergers amongst Part D insurers with the aim of decomposing market power, cost efficiency, and bargaining power effects. We apply a differences-in-differences identification strategy to panel data on plans offered between 2006 and 2012 to analyze the effects of mergers on...

The merger of two real estate investment trusts (REITs) consolidates two real estate portfolios. We classify equity REIT mergers according to whether they maintain portfolio focus, increase focus or are diversifying with respect to the predominant property type and the geography of the...

In most cases market returns around merger announcements are difficult to interpret as the announcement of a bid usually conveys more information than the synergy from combination. Using a unique, hand-collected dataset on terminated merger proposals, we investigate termination returns in deals...