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Is Establishing a New Partnership Useful Information for Investors in the Smartphone Supply Market?

Author

Listed:
  • Insung Son

    (Entrepreneurship Research Institute, Gyeongsang National University, Jinju 52725, Korea)

  • Sihyun Kim

    (Department of Logistics, Korea Maritime and Ocean University, Busan 49112, Korea)

Abstract

This study analyzed partner volatility (new, old, revocation partners) and country-specific signal effects (United States (US), Taiwan, Japan, and South Korea) for Apple iPhone parts suppliers from 2007 to 2018. Mid- to long-term stock price movements were also analyzed to define trading patterns by investor type. The results using logit regression analysis revealed that new partners and revocation partners each have a signaling effect perceived as positive and negative information in the short term, and the excess returns by country showed a positive signaling effect in the order of the US, Taiwan, South Korea, and Japan. The findings also suggest that the change in the new partners’ stock price after the preannouncement of new products was useful investment information. Moreover, information asymmetry was found between individual investors, institutions, and foreigners. Results indicate that new partner selection in the smartphone market impacts corporate value and serves as useful investment information.

Suggested Citation

  • Insung Son & Sihyun Kim, 2021. "Is Establishing a New Partnership Useful Information for Investors in the Smartphone Supply Market?," Sustainability, MDPI, vol. 13(10), pages 1-10, May.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:10:p:5573-:d:555962
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    References listed on IDEAS

    as
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    Full references (including those not matched with items on IDEAS)

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