@article{8710938,
  abstract     = {{This study investigates the impact that simultaneously replacing both midday single-price call auction and lunch break with multi-price continuous trading had on intraday volatility-volume patterns as well as the intraday volatility-volume nexus.
The analysis utilizes 150 million tick-by-tick transaction data related to 333 stocks traded on Borsa Istanbul Equity Market covering period of 2 months prior to and following the change. In addition to graphic comparisons, the study uses difference in mean tests, panel-fixed GLS, panel-random GLS and random-effects linear models with AR(1) disturbance regression estimations.
The results show that intraday volatility and trading volume form an inverse J shape and are positively correlated. It is observed that the implementation of the regulation change decreased intraday volatility and increased trading volume. Additionally, the results indicate a negative volatility-liquidity and a positive volume-liquidity relationship, supporting the mixture of distribution hypothesis.
Enhanced market efficiency provides greater opportunity for investment and risk management. Investors can benefit from the findings on the intraday volatility-volume nexus, which is an indicator of informed trading, and regulatory authorities can use volume to oversight volatility.
This very rare regulation change of the simultaneous replacement of the lunch break and midday call auction with continuous trading is investigated in the context of intraday volume and volatility. This study also expands upon some important findings on the volume-volatility nexus for the Turkish Stock Market.}},
  author       = {{Kadioglu, Eyüp}},
  issn         = {{1746-8809}},
  journal      = {{INTERNATIONAL JOURNAL OF EMERGING MARKETS}},
  keywords     = {{Borsa Istanbul Equity Market,Intraday volatility,Intraday trading volume,Intraday pattern,Market microstructures,Mixture of distribution hypothesis,VOLUME-VOLATILITY RELATIONSHIP,CLOSING CALL AUCTION,TRADING VOLUME,RETURN VOLATILITY,STOCK RETURNS,INFORMATION,EXCHANGE,HETEROSKEDASTICITY,MIXTURE,MANIPULATION}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{1216--1235}},
  title        = {{Intraday analysis of regulation change in microstructure : evidence from an emerging market}},
  url          = {{http://doi.org/10.1108/ijoem-11-2020-1310}},
  volume       = {{18}},
  year         = {{2023}},
}

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