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A note on the technology herd: evidence from large institutional investors

Josine Uwilingiye, Esin Cakan, Riza Demirer () and Rangan Gupta ()

Review of Behavioral Finance, 2019, vol. 11, issue 3, 294-308

Abstract: Purpose - The purpose of this paper is to examine intentional herding among institutional investors with a particular focus on the technology sector that was the driver of the “New Economy” in the USA during the dot-com bubble of the 1990s. Design/methodology/approach - Using data on technology stockholdings of 115 large institutional investors, the authors test the presence of herding by examining linear dependence and feedback between individual investors’ technology stockholdings and that of the aggregate market. Unlike other models to detect herding, the authors use Geweke (1982) type causality tests that allow authors to disentangle spurious herding from intentional herding via tests of bidirectional and instantaneous causality across portfolio positions in technology stocks. Findings - After controlling information-based (spurious) herding, the tests show that 38 percent of large institutional investors tend to intentionally herd in technology stocks. Originality/value - The findings support the existing literature that investment decisions by large institutional investors are not only driven by fundamental information, but also by cognitive bias that is characterized by intentional herding.

Keywords: Causality; Herding; G02; G11; G14; C18 (search for similar items in EconPapers)
Date: 2019
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Working Paper: A Note on the Technology Herd: Evidence from Large Institutional Investors (2017)
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