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Information Risk and Long-Run Performance of Initial Public Offerings 出版社 Gabler DOI 10.1007/978-3-8349-8117-2 版权 2009 ISBN 978-3-8349-1259-6 (Print) 978-3-8349-8117-2 (Online) 学科分类 商业和经济 学科 Economics/Management Science and Finance /Banking SpringerLink Date 2009年2月14日 Contents Foreword v Foreword vii Preface ix List of Tables xiii List of Figures xv Symbols and Abbreviations xvii 1 Introduction and Motivation 1 2 Valuation under Information Risk 7 2.1 Classification of information risk . . . . . . . . . . . . . . . . . . . . . . 7 2.2 Empirical measurement of information risk . . . . . . . . . . . . . . . . 8 2.3 Conceptual consequences of the introduction of information risk . . . . 12 3 Derivation of a Returns-Based Measure of Information Quality 15 4 Abnormal Returns Measurement and Hypotheses Development 25 4.1 Methodological issues in long-term abnormal returns measurement . . . 25 4.1.1 What return is normal? . . . . . . . . . . . . . . . . . . . . . . 25 4.1.2 Choosing the rightmetric . . . . . . . . . . . . . . . . . . . . . 33 4.1.3 Event-time vs. calendar-time approaches . . . . . . . . . . . . . 37 4.1.4 Concluding remarks and problems discussion . . . . . . . . . . . 40 4.2 Explaining abnormal IPO performance . . . . . . . . . . . . . . . . . . 43 5 Tests with Abnormal Portfolio Returns 51 5.1 Construction of the IPO sample . . . . . . . . . . . . . . . . . . . . . . 51 xii Table of Contents 5.2 Calendar-time portfolios from the full IPO sample . . . . . . . . . . . . 55 5.3 Persistence tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 5.4 Deviation tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 5.4.1 Main results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 5.4.2 The role of size . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 5.4.3 Analysis of subperiods . . . . . . . . . . . . . . . . . . . . . . . 83 6 Robustness Tests 85 6.1 Varying the calendar-time approach . . . . . . . . . . . . . . . . . . . . 85 6.2 Firm-specific tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 6.2.1 Deviation and IPO firmcharacteristics . . . . . . . . . . . . . . 89 6.2.2 Firm-specific abnormal return and size . . . . . . . . . . . . . . 91 6.2.3 Firm-specific abnormal return and operating performance . . . . 92 6.3 Further Robustness Tests . . . . . . . . . . . . . . . . . . . . . . . . . . 93 7 Concluding Remarks 97 Appendix 99 Bibliography 127
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