Effect of futures trading on the liquidity of underlying stocks: Evidence from Vietnam

Son Pham, Thao T.T. Nguyen, Hung X. Do* (Corresponding Author)

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Our paper investigates the effect of the introduction of the VN30 futures contract on the liquidity of thirty blue-chip underlying stocks in Vietnam stock market. Using the difference-in-difference approach with carefully matched stocks, we find the quoted spread and the Amihud illiquidity of the VN30's component stocks increase after the introduction of index future trading. The decrease in liquidity is explained by a jump in the adverse selection costs proxied by the probability of informed trading (PIN) after such introduction. In addition, the prevalence of futures under-pricing indicates the lack of index arbitrage due to short-sale prohibition in the Vietnamese stock market.
Original languageEnglish
Article number101772
Number of pages21
JournalPacific-Basin Finance Journal
Volume73
Early online date11 May 2022
DOIs
Publication statusPublished - Jun 2022

Keywords

  • Liquidity
  • Future
  • Mispricing
  • PIN
  • Short-sale constraints

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