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The BOJ's ETF purchases and its effects on Nikkei 225 stocks

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  • Harada, Kimie
  • Okimoto, Tatsuyoshi

Abstract

This paper examines the impacts of the Bank of Japan's (BOJ) exchange-traded funds (ETFs) purchasing program that has been conducted since December 2010. The program is a part of the BOJ's unconventional monetary policy and has accelerated since the introduction of the Quantitative and Qualitative Easing in April 2013. In this study, the influence of underlying stocks is assessed by comparing the performance of the stocks (those included in the Nikkei 225 and others) using a difference-in-difference analysis. We also separate morning and afternoon returns to control for the fact that the BOJ tends to purchase ETFs when performance of the stock market is weak in the morning session. We find that the Nikkei 225 component stocks' afternoon returns are significantly higher than those of non-Nikkei 225 stocks when the BOJ purchases ETFs. In addition, the subsample analysis demonstrates that the impact on Nikkei 225 stock returns becomes smaller over time despite the growing purchase amounts. Overall, our results indicate that the cumulative treatment effects on the Nikkei 225 are around 20% as of October 2017.

Suggested Citation

  • Harada, Kimie & Okimoto, Tatsuyoshi, 2021. "The BOJ's ETF purchases and its effects on Nikkei 225 stocks," International Review of Financial Analysis, Elsevier, vol. 77(C).
    • Handle: RePEc:eee:finana:v:77:y:2021:i:c:s1057521921001605
    DOI: 10.1016/j.irfa.2021.101826
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    2. Ko Adachi & Kazuhiro Hiraki & Tomiyuki Kitamura, 2021. "Supplementary Paper Series for the "Assessment" (1): The Effects of the Bank of Japan's ETF Purchases on Risk Premia in the Stock Markets," Bank of Japan Working Paper Series 21-E-3, Bank of Japan.
    3. Hiroshi Gunji & Kazuki Miura & Yuan Yuan, 2023. "The effect of the Bank of Japan's Exchange‐Traded Fund purchases on firm performance," Asian Economic Journal, East Asian Economic Association, vol. 37(3), pages 346-370, September.
    4. Takatoshi Ito, 2021. "An Assessment of Abenomics: Evolution and Achievements," Asian Economic Policy Review, Japan Center for Economic Research, vol. 16(2), pages 190-219, July.
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    6. Christophe Blot & Jérôme Creel & Paul Hubert, 2019. "Challenges ahead for EMU monetary policy," SciencePo Working papers Main hal-03403244, HAL.
    7. Linh, Nguyen Thuy, 2021. "Spillovers of the Bank of Japan’s Exchange Traded Fund and Corporate Bond Purchases," TDB-CAREE Discussion Paper Series E-2021-02, Teikoku Databank Center for Advanced Empirical Research on Enterprise and Economy, Graduate School of Economics, Hitotsubashi University.
    8. Kenichi Hirayama & Akihiko Noda, 2020. "Evaluating the Financial Market Function in Prewar Japan using a Time-Varying Parameter Model," Papers 2008.00860, arXiv.org, revised Jun 2021.
    9. Katagiri, Mitsuru & Shino, Junnosuke & Takahashi, Koji, 2022. "The announcement effects of a change in the Bank of Japan’s ETF purchase program: An event study," Finance Research Letters, Elsevier, vol. 50(C).
    10. Ailie Charteris & Conrad Alexander Steyn, 2023. "The Bank of Japan’s exchange traded fund purchases: a help or hindrance to market efficiency?," Journal of Asset Management, Palgrave Macmillan, vol. 24(3), pages 225-240, May.
    11. Linh, Nguyen Thuy, 2021. "The Impact of the Bank of Japan’s Exchange Traded Fund and Corporate Bond Purchases on Firms’ Capital Structure," RCESR Discussion Paper Series DP21-1, Research Center for Economic and Social Risks, Institute of Economic Research, Hitotsubashi University.
    12. Grahame Johnson & Sharon Kozicki & Romanos Priftis & Lena Suchanek & Jonathan Witmer & Jing Yang, 2020. "Implementation and Effectiveness of Extended Monetary Policy Tools: Lessons from the Literature," Discussion Papers 2020-16, Bank of Canada.
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    14. Hattori, Takahiro & Yoshida, Jiro, 2023. "The impact of Bank of Japan’s exchange-traded fund purchases," Journal of Financial Stability, Elsevier, vol. 65(C).
    15. Luke Bouffler & Amy Kwan & Lantian Liang & Richard Philip, 2023. "Do uninformed traders move prices? Evidence from the Bank of Japan's ETF purchasing program," The Financial Review, Eastern Finance Association, vol. 58(1), pages 5-18, February.
    16. Fatemeh Salimi Namin, 2020. "Exchange Rates, Stock Prices, and Stock Market Uncertainty," AMSE Working Papers 2037, Aix-Marseille School of Economics, France.
    17. Israel, Karl-Friedrich & Sepp, Tim Florian & Sonnenberg, Nils, 2023. "The effects of unconventional monetary policy on stock markets and household incomes in Japan," Working Papers 177, University of Leipzig, Faculty of Economics and Management Science.
    18. El Kalak, Izidin & Leung, Woon Sau & Takahashi, Hidenori & Yamada, Kazuo, 2023. "The Bank of Japan's equity purchases and stock illiquidity," Journal of Financial Markets, Elsevier, vol. 63(C).
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    21. Maeda, Kou & Shino, Junnosuke & Takahashi, Koji, 2022. "Counteracting large-scale asset purchase program: The Bank of Japan’s ETF purchases and securities lending," Economic Analysis and Policy, Elsevier, vol. 75(C), pages 563-576.

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