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題名 Trustbusters’ crackdown on big tech: An analysis of competition policy and antitrust enforcement efficacy as reflected in the securities market
作者 王立達
Chou, Yuntsai;Wang, Richard Li-Dar
貢獻者 法學院
日期 2026-04
上傳時間 20-四月-2026 10:39:03 (UTC+8)
摘要 The maneuvers of big tech firms with their market power demonstrate considerable similarities in the United States, the European Union, and China. However, we observed a divergent trend in their stock performance. We hypothesized that a company’s securities performance could be attributed to regulatory events and differentiated the effects of ex ante competition policy on the performance of big tech firms’ securities from those of ex post antitrust enforcement using an event time regression model. Our empirical results show that the ex ante approach is more effective than the ex post one, because the former entails credible policymaking and induces smaller implementation costs. Enforcements against tying arrangements, exclusivity contracts, self-referencing and data misuse are impactful on big tech’s securities performance. Behavioral remedies can be more effective when combined with monetary penalties because the latter explicitly signal regulatory certainty.
關聯 Computer Law & Security Review, Vol.60, 106276
資料類型 article
DOI https://doi.org/10.1016/j.clsr.2026.106276
dc.contributor 法學院
dc.creator (作者) 王立達
dc.creator (作者) Chou, Yuntsai;Wang, Richard Li-Dar
dc.date (日期) 2026-04
dc.date.accessioned 20-四月-2026 10:39:03 (UTC+8)-
dc.date.available 20-四月-2026 10:39:03 (UTC+8)-
dc.date.issued (上傳時間) 20-四月-2026 10:39:03 (UTC+8)-
dc.identifier.uri (URI) https://ah.lib.nccu.edu.tw/item?item_id=182172-
dc.description.abstract (摘要) The maneuvers of big tech firms with their market power demonstrate considerable similarities in the United States, the European Union, and China. However, we observed a divergent trend in their stock performance. We hypothesized that a company’s securities performance could be attributed to regulatory events and differentiated the effects of ex ante competition policy on the performance of big tech firms’ securities from those of ex post antitrust enforcement using an event time regression model. Our empirical results show that the ex ante approach is more effective than the ex post one, because the former entails credible policymaking and induces smaller implementation costs. Enforcements against tying arrangements, exclusivity contracts, self-referencing and data misuse are impactful on big tech’s securities performance. Behavioral remedies can be more effective when combined with monetary penalties because the latter explicitly signal regulatory certainty.
dc.format.extent 106 bytes-
dc.format.mimetype text/html-
dc.relation (關聯) Computer Law & Security Review, Vol.60, 106276
dc.title (題名) Trustbusters’ crackdown on big tech: An analysis of competition policy and antitrust enforcement efficacy as reflected in the securities market
dc.type (資料類型) article
dc.identifier.doi (DOI) 10.1016/j.clsr.2026.106276
dc.doi.uri (DOI) https://doi.org/10.1016/j.clsr.2026.106276