{"title":"秘密合并:来自哈特-斯科特-罗迪诺法案修正案的证据","authors":"Thomas G. Wollmann","doi":"10.1257/AERI.20180137","DOIUrl":null,"url":null,"abstract":"Prospective merger review is the most frequent application of antitrust law. It exempts transactions on the basis of size, though small deals can have large anticompetitive effects in segmented industries. I examine its impact on antitrust enforcement and merger activity in the context of an abrupt increase in the US exemption threshold. I find that among newly-exempt deals, antitrust investigations fall to almost zero while mergers between competitors rise sharply. Effectively all of the rise reflects an endogenous response of firms to reduced premerger scrutiny, consistent with large deterrent effects of antitrust enforcement. (JEL G34, G38, K21, L41)","PeriodicalId":29954,"journal":{"name":"American Economic Review-Insights","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1257/AERI.20180137","citationCount":"75","resultStr":"{\"title\":\"Stealth Consolidation: Evidence from an Amendment to the Hart-Scott-Rodino Act\",\"authors\":\"Thomas G. Wollmann\",\"doi\":\"10.1257/AERI.20180137\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Prospective merger review is the most frequent application of antitrust law. It exempts transactions on the basis of size, though small deals can have large anticompetitive effects in segmented industries. I examine its impact on antitrust enforcement and merger activity in the context of an abrupt increase in the US exemption threshold. I find that among newly-exempt deals, antitrust investigations fall to almost zero while mergers between competitors rise sharply. Effectively all of the rise reflects an endogenous response of firms to reduced premerger scrutiny, consistent with large deterrent effects of antitrust enforcement. (JEL G34, G38, K21, L41)\",\"PeriodicalId\":29954,\"journal\":{\"name\":\"American Economic Review-Insights\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2019-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1257/AERI.20180137\",\"citationCount\":\"75\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"American Economic Review-Insights\",\"FirstCategoryId\":\"96\",\"ListUrlMain\":\"https://doi.org/10.1257/AERI.20180137\",\"RegionNum\":1,\"RegionCategory\":\"经济学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ECONOMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"American Economic Review-Insights","FirstCategoryId":"96","ListUrlMain":"https://doi.org/10.1257/AERI.20180137","RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ECONOMICS","Score":null,"Total":0}
Stealth Consolidation: Evidence from an Amendment to the Hart-Scott-Rodino Act
Prospective merger review is the most frequent application of antitrust law. It exempts transactions on the basis of size, though small deals can have large anticompetitive effects in segmented industries. I examine its impact on antitrust enforcement and merger activity in the context of an abrupt increase in the US exemption threshold. I find that among newly-exempt deals, antitrust investigations fall to almost zero while mergers between competitors rise sharply. Effectively all of the rise reflects an endogenous response of firms to reduced premerger scrutiny, consistent with large deterrent effects of antitrust enforcement. (JEL G34, G38, K21, L41)
期刊介绍：
The journal American Economic Review: Insights (AER: Insights) is a publication that caters to a wide audience interested in economics. It shares the same standards of quality and significance as the American Economic Review (AER) but focuses specifically on papers that offer important insights communicated concisely. AER: Insights releases four issues annually, covering a diverse range of topics in economics.
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