About Cornerstone Research

For more than 25 years, Cornerstone Research staff have provided economic and financial analysis in all phases of commercial litigation and regulatory proceedings.

We work with a broad network of testifying experts, including prominent faculty and industry practitioners, in a distinctive collaboration. Our staff consultants contribute expertise in economics, finance, accounting, and marketing, as well as business acumen, familiarity with the litigation process, and a commitment to produce outstanding results. The experts with whom we work bring the specialized expertise of researchers or practitioners required to meet the demands of each assignment.

Cornerstone Research has 450 staff and offices in Boston, Chicago, Los Angeles, Menlo Park, New York, San Francisco, and Washington.

Menlo Park, CA—Almost every acquisition of a large U.S. public company announced in 2010 or 2011 elicited multiple lawsuits, according to a report by Cornerstone Research and Professor Robert Daines of the Stanford Law School. Only a small fraction of these lawsuits, however, resulted in payments to shareholders; the majority settled for additional disclosures or, less frequently, changes in merger terms, such as deal protection provisions.


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As of late March 2012, sixty-seven lawsuits have already been reported for thirteen out of seventeen deals announced during January and February 2012.

Our January 2012 publication of Recent Developments in Shareholder Litigation Involving Mergers and Acquisitions, garnered widespread media, academic, and industry interest, and was cited in a recent Delaware Court of Chancery ruling. We have now updated the report to include more recent data and have added analyses of litigation by industry and plaintiff attorney fees.

The report identifies 789 lawsuits filed for acquisitions of U.S. public companies valued at or over $100 million announced in 2010, and 740 lawsuits filed for such deals announced in 2011. As of late March 2012, sixty-seven lawsuits have already been reported for thirteen out of seventeen deals announced during January and February 2012.