In a 17-page memorandum issued by the law firm of Wachtell Lipton (Wachtell), Empiricism and Experience; Activism and Short-Termism; the Real World of Business, the firm’s founder Martin Lipton put forward new criticism of our empirical study, The Long-Term Effects of Hedge Fund Activism. Lipton’s critique is based on a review of a large number of works which, he asserts, back up empirically the view that our study questions. Following our examination of each of the studies noted by Lipton, this post responds to Lipton’s empirical review. We show that Lipton’s review fails to identify any empirical evidence that is inconsistent with our findings or backs the claim of Wachtell that our study questions.
Our study shows that the myopic activisms claim that Lipton and his firm have long asserted—the claim that that interventions by activist hedge funds are in the long term detrimental to the involved companies and their long-term shareholders—is not supported by the data. Seeking to cast doubt on the validity of our finding, Lipton’s memorandum cites twenty-seven works by academics or policymakers, and asserts that these studies demonstrate that our conclusion—that the myopic activism claims is not supported by the data—is “patently false.” In this post, we explain that this assertion is not supported by the cited studies; most of the studies are not even related to the subject of the consequences of hedge fund activism, and those that are related to it do not provide evidence contradicting our findings.
Below we begin with discussing the relevant background and then review the cited studies and explain why, in contrast to the impression Lipton’s memo seeks to make, they do not provide an empirical basis for the myopic activists view. Instead of running away from the empirical evidence, while constantly shooting back, Wachtell Lipton should accept that its myopic activists claim is not supported by the data. Indeed, as one of us plans to discuss in a separate post, despite its repeated attacks on our study, Wachtell is shifting its position toward avoiding reliance on the myopic activism claim in its opposition to hedge fun activism, and this shift should lead Wachtell and its clients to rethink their attitude to hedge funds activists.