The impact of patent activity on idiosyncratic volatility in U.S. pharmaceutical companies

• Emre Atilgan,

  Roles Methodology, Writing – original draft, Writing – review & editing

  Affiliation Department of Health Management, Trakya University, Edirne, Türkiye

  https://orcid.org/0000-0003-3759-7544

  ⨯
• Fethiye Burcu Türkmen Ceylan ,

  Roles Supervision, Writing – review & editing, Conceptualization

  * E-mail: f.turkmen@uea.ac.uk

  Affiliations School of Global Development, University of East Anglia, Norwich, United Kingdom, Department of Finance, Faculty of Economics and Administrative Sciences, Kırşehir Ahi Evran University, Kırşehir, Türkiye,

  https://orcid.org/0000-0003-1701-150X

  ⨯
• Ömer Tuğsal Doruk,

  Roles Formal analysis, Writing – review & editing

  Affiliations Department of Economics, Kyrgyz-Turkish Manas University, Bishkek, Kyrgyzstan, Department of Business Administration, Adana Alparslan Türkeş Science and Technology University, Adana, Türkiye

  https://orcid.org/0000-0002-2382-1042

  ⨯
• Hasan Murat Ertuğrul,

  Roles Data curation, Writing – review & editing, Validation

  Affiliation Department of Economics, Anadolu University, Eskişehir, Türkiye

  ⨯
• Ahmet Yasir Barak

  Roles Data curation, Writing – review & editing

  Affiliation Department of Accounting and Finance, Isparta Applied Sciences University, Isparta, Türkiye

  ⨯