Updated on 2026/04/28

写真a

 
INOUE KOTARO
 
Organization
Members of the Board Executive Vice Presidents
Title
Executive Vice Presidents
External link

Research Areas

  • Humanities & Social Sciences / Money and finance  / Corporate Governance, Corporate Finance, Mergers and Acquisitions, Investment

Research History

  • Institute of Science Tokyo   Executive Vice President, CFO

    2024.10

      More details

    Country:Japan

    researchmap

  • Tokyo Institute of Technology

    2022.4 - 2024.9

      More details

  • 一般社団法人八大学工学系連合会   代表理事・会長

    2022.4 - 2023.4

      More details

  • 日本ファイナンス学会   会長

    2020.6 - 2022.6

      More details

  • Tokyo Institute of Technology   School of Engineering   Professor

    2016.4

      More details

  • Tokyo Institute of Technology   Graduate School of Decision Science and Technology   Professor

    2012.4 - 2016.3

      More details

  • Keio University Graduate School of Business Administration   Associate Professor

    2007.4 - 2012.3

      More details

  • Nagoya City University   Graduate School of Economics Department of Management   Associate Professor

    2003.12 - 2007.3

      More details

▼display all

Professional Memberships

▼display all

Committee Memberships

  • 経済産業省   公正な買収の在り方に関する研究会  

    2022.11 - 2023.10   

      More details

  • 経済産業省   公正な買収の在り方に関する研究会委員  

    2022.11 - 2023.9   

      More details

  • 厚生労働省   医薬品の迅速・安定供給実現に向けた総合政策に関する有識者検討会委員  

    2022.9   

      More details

  • 日本ファイナンス学会   副会長  

    2022.6 - 2024.6   

      More details

  • 一般社団法人 八大学工学系連合会   代表理事  

    2022.4 - 2023.4   

      More details

  • 日本ファイナンス学会   会長  

    2020.6 - 2022.6   

      More details

  • 経済産業省   事業再編研究会委員 (2020/01-2020/07)  

    2020.1 - 2020.7   

      More details

  • 経済産業省   事業再編研究会委員  

    2020.1 - 2020.7   

      More details

  • 日本ファイナンス学会   副会長  

    2018.6 - 2020.6   

      More details

  • 経済産業省   我が国企業による海外M&A研究会委員  

    2017.8 - 2018.3   

      More details

  • 農林水産省   食品産業戦略会議委員  

    2017.6 - 2018.6   

      More details

  • 公認会計士・監査審査会   公認会計士試験委員  

    2014.12 - 2016.12   

      More details

  • 日本経営財務研究学会   評議委員  

    2014.10   

      More details

  • Nippon Finance Association   Board Member  

    2014.6   

      More details

  • 原子力損害賠償・廃炉等支援機構   独立委員  

    2012.7 - 2015.12   

      More details

  • 独立行政法人経済産業研究所   企業統治分析のフロンティアプロジェクト委員  

    2012.4   

      More details

  • アジアファイナンス学会   理事  

    2012.1 - 2021.6   

      More details

▼display all

Papers

▼display all

Books

Research Projects

  • VCによるガバナンスがベンチャー企業の成長に与える効果の実証研究

    Grant number:24K05003  2024.4 - 2027.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    井上 光太郎, 木村 遥介

      More details

    Grant amount:\4680000 ( Direct Cost: \3600000 、 Indirect Cost:\1080000 )

    researchmap

  • 機関投資家の運用スタイルとモニタリング活動内容およびその効果の実証分析

    Grant number:21K01556  2021.4 - 2024.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    井上 光太郎

      More details

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

    本年度は、機関投資家のエンゲージメント活動の実態と、その投資先企業に対する効果を明らかにする研究について特に集中して検証を進め、さらに論文作成を行った。具体的には複数の大手機関投資家よりエンゲージメント活動の詳細データの提供を受け、外部からは公開データでは観測できない機関投資家のエンゲージメントを変数として採用し、対象企業および対象課題の選択、そのコーポレートガバナンスおよびESG活動全般への効果を検証した。その結果、分散投資家である機関投資家のフリーライダー問題が緩和される環境下において特定の対象企業へのエンゲージメント活動が実施されること、エンゲージメントは対象企業のガバナンスとパフォーマンスを改善するとの結果を得た。この検証結果を論文にまとめ、2022年6月にRIETI DPとして公開し、これを英語論文化して2022年3月のJFA-PBFJ Special Issue Conferenceで報告し、同カンファレンスのBest Paper Awardとして表彰された。
    また、同様に機関投資家の環境および社会的側面に関するエンゲージメント活動が、ターゲット企業のESG行動に与える効果の検証も進めた。この結果については初期的分析結果を2021年度日本ファイナンス学会秋季研究大会で報告した。
    また、機関投資家の投資対象企業へのモニタリング行動の国内外の研究動向のまとめと申請者自身のこれまでの研究結果のまとめを行い、日本ファイナンス学会2021年大会において、会長講演「株式所有構造と企業統治: 我々はどこから来たのか、どこへ行くのか」として講演した。
    また、機関投資家と企業との対話が企業の事業再編活動による事業ポートフォリオ最適化につながることのエビデンスベースの論考を、日本経済新聞朝刊の経済教室「視界不良下の経営:事業再編へ投資家と対話を」として掲載した。

    researchmap

  • Analysis of the value of textual information in annual reports through natural language processing

    Grant number:18K18566  2018.6 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

    Inoue Kotaro

      More details

    Grant amount:\6240000 ( Direct Cost: \4800000 、 Indirect Cost:\1440000 )

    In this study, textual information in corporate annual reports was analyzed using natural language processing to test whether textual data has valuable information that quantitative data does not. As a result of the analysis, we found that textual information in annual reports can predict the occurrence of future M&A with higher probability than quantitative data alone. The "Business and Other Risks" section of the annual reports have explanatory power with respect to the company's stock price in the following fiscal year. The changes in the content of annual reports based on the Cabinet Office Ordinance on Enhancing the Contents of Annual Reports have the effect of mitigating the information asymmetry between firms and investors, and contribute to improving stock liquidity.
    The above series of studies were published as two peer-reviewed papers and two invited papers in academic journals.

    researchmap

  • Managerial heterogeneity and corporate behavior

    Grant number:17K13760  2017.4 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

    Ikeda Naoshi, Inoue Kotaro

      More details

    Grant amount:\2210000 ( Direct Cost: \1700000 、 Indirect Cost:\510000 )

    When previous studies analyze the relationship between compensation scheme and corporate behavior, they do not explicitly consider the personal risk aversion of executives. We directly measure the degree of risk aversion by a survey with Japanese data. We find that the higher the personal risk aversion of CFOs, the lower the level of high-risk investment. We also find that this effect of the risk aversion on investment is strengthened when the portfolio of CFOs is less diversified and weakened by the compensation scheme with a convex payoff.

    researchmap

  • Corporate Governance, Firm Behavior, and Firm Performance: International Comparison

    Grant number:15H03375  2015.4 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Inoue Kotaro

      More details

    Grant amount:\15860000 ( Direct Cost: \12200000 、 Indirect Cost:\3660000 )

    In this research, using the financial panel data of public companies from major developed countries, we show that relatively poor financial performance and low shareholder market value of Japanese companies from international perspective are explained, in the large extent, by Japanese distinctive corporate governance system such as the board controlled by corporate insiders and ownership sturucture with cross-shareholders, and inflexible labor market of Japan due to relatively strong legal protection of labors.
    During the period of this research project, we published six international peer-reviewed journal articles, two domestic peer-reviewed journal articles, and additional three peer-reviewed international conference papers.

    researchmap

  • International Survey on Personalities of Chief Executive Officers and Their Investment and Finance Strategies

    Grant number:25285099  2013.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Yamamto Tatsushi, GRAHAM John

      More details

    Grant amount:\15730000 ( Direct Cost: \12100000 、 Indirect Cost:\3630000 )

    We conducted surveys to chief executive officers all over the world every three month from December, 2012 to March, 2017 as to how they evaluate economic condition of their countries and firms at each point of time. By the surveys, we made clear the effects of changes in their views on their investment and finance strategies, and also the relationship between their views and economic condition of their countries.

    researchmap

  • An analysis of cross-border acquisitions by Japanese firms from cross-country comparative analysis

    Grant number:24530422  2012.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    INOUE Kotaro, SUZUKI Kazunori, KATO Hideaki

      More details

    Grant amount:\4810000 ( Direct Cost: \3700000 、 Indirect Cost:\1110000 )

    In this project, we prepaired four research papers which empirically analyze economics of cross-border acquisitions by Japanese firms. We find that cross-border acquisitions by Japanese acquirers are evaluated positively by Japanese stock market, the stock market positively evaluates growth potential achieved by the oversea acquisitions. We also confirm that the acquisitions are economically rational usage of cash on hand of the acquiring firms. On the other hand, we did not find supporting evidence that Japanese acquirers increase shareholder wealth or improve performance in the post-acquisition period. We also find that Japanese coporate culture of strong uncertainty avoidance results in less cross-border acquisitions and higher premium payment to reduce completion risks. The results properly explains behavior of Japanese acquirers who are categolized in the high uncertainty avoidence group.

    researchmap

  • Anomalies in the Japanese stock markets --Traditional approach and behavioral approach--

    Grant number:23330103  2011.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    KATO Hideaki, TSUTSUI Yoshiro, INOUE Kotaro, YAMAMOTO Tatsushi, OKADA Katsuhiko, SUZUKI Katsushi, YAMASAKI Takashi

      More details

    Grant amount:\18460000 ( Direct Cost: \14200000 、 Indirect Cost:\4260000 )

    Focusing on seasoned equity offering and share repurchases in Japan, the divergence of opinion hypothesis has been examined as a possible explanation to the puzzling stock price behavior during the issuance (or repurchase) period (Kato, Singh and Suzuki (2015), Bremer, Kato, Singh and Suzuki (2015)). Okada et al. (2015) shows the neglected stocks tend to react slowly to the new information to the market and as a result, the market underreacts to the news. Inoue et al.(2015) explore the impact of corporate cultures on cross-border acquisitions. Inoue et al. find that acquirers from countries with a high uncertainty aversion conduct less cross-border M&As. Muramiya, Yamamoto and Yamasaki (2015) show that become synchronous with the market due to investors’ limited attention after a catastrophic event, stock prices. Further, crush risk is higher for more opaque firms.

    researchmap

  • An Empirical Study of The Effectiveness of Minority Shareholder Protection in Corporate Control Transactions in Japan

    Grant number:21530361  2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    INOUE Kotaro, KATO Hideaki

      More details

    Grant amount:\2080000 ( Direct Cost: \1600000 、 Indirect Cost:\480000 )

    This study empirically analyzes interests of minority shareholders under corporate control transactions in which conflicts of interests among shareholders are potentially large. Since, legal protections of minority shareholders are relatively weak in Japan compared to the US and the EU, the issues analyzed in this study are quite important for sound development of both equity market and market for corporate control in Japan. My empirical results reveals that large portion of tender offers in Japan have coercive nature. Although new Corporate Law and relevant laws and rules improve protection of minority shareholders, there is still large room for improvements.

    researchmap

  • A Series of Empirical Research on Effects and Limits of Outside Monitoring of Japanese Corporate Behavior

    Grant number:18530284  2006 - 2008

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    INOUE Kotaro

      More details

    Grant amount:\1900000 ( Direct Cost: \1600000 、 Indirect Cost:\300000 )

    researchmap

  •   More details

    Grant type:Competitive

    researchmap

  • -

      More details

    Grant type:Competitive

    researchmap

▼display all