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Market-Maker Short Selling : A Necessary Evil?

첫 페이지 보기
  • 발행기관
    한국재무학회 바로가기
  • 간행물
    한국재무학회 학술대회 바로가기
  • 통권
    2024년 한국재무학회 추계학술대회 (2024.11)바로가기
  • 페이지
    pp.286-315
  • 저자
    Yerim Kim, Kyong Shik Eom, Baeho Kim
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A457287

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원문정보

초록

영어
This paper investigates the impact of market makers’ short selling, focusing on the single-stock futures (SSFs) market in Korea during the short-selling ban (March to April 2021), when only market makers were allowed to sell the underlying stocks short. Employing advanced machinelearning techniques to distinguish between heavy and light short sellers among market makers and accurately estimate propensity scores, we apply overlap weighting to control for confounding bias in many market-microstructure variables. We found that short selling by SSFs market makers meaningfully improved liquidity and price efficiency in the futures market. These results were confirmed by both the overlap weighting method and conventional panel-data analysis; a surprising result given a fairly restrictive short-selling environment. However, the short selling did not reduce the backwardation effect in the spot market, indicating its positive impact was limited to the futures market. Overall, the regulatory restriction seemed to prevent SSFs market makers from selling short sufficiently to realize the benefits of short selling. As the first paper examining the role of SSFs market makers’ short selling, our findings highlight the need for open-minded short-selling regulations that promote liquidity and market efficiency, while minimizing the risk of market and political abuses.

목차

Abstract
1. Introduction
2. Related Literature
2.1. Market Makers
2.2. Short-selling Constraints or Bans
3. Data and Methodology
3.1. Data and Sample
3.2. Market Quality Variables
3.3 Methodology
4 Empirical Results
4.1. Sample Analysis
4.2. Short Selling Dummies
4.3. Propensity Score Estimation
4.4. Overlap Weighting and Panel-data Analyses
5. Conclusion
References

키워드

Single-stock futures market-maker short selling propensity score weighting machinelearning technique market quality

저자

  • Yerim Kim [ Korea University Business School ]
  • Kyong Shik Eom [ CRMR at University of California, Berkeley ]
  • Baeho Kim [ Korea University Business School ] Corresponding Author

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    한국재무학회 [The Korean Finance Association]
  • 설립연도
    1988
  • 분야
    사회과학>경영학
  • 소개
    본 회는 재무학 및 이와 관련되는 분야를 발전시키며 회원 상호간의 친목 도모를 목적으로 한다.

간행물

  • 간행물명
    한국재무학회 학술대회
  • 간기
    부정기
  • 수록기간
    2006~2024
  • 십진분류
    KDC 325 DDC 330

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