The study examines the spillover between Twitter Uncertainty Indexes (TUI) and 10 US sectors. Our methodology is twofold: a time-varying parameter vector autoregression (TVP-VAR) to explore the dynamic connectedness among sectoral returns and a regression, mainly ordinary least squares (OLS) and...

Using a market model and principal component analysis, we investigate the existence of common effects in order imbalance in the Borsa Istanbul's option market. Accordingly, we find the presence of commonality in order imbalance for call options and an even more dominant presence in put options....

Employing asset-pricing models over the period 2012 to 2017, this study examines whether a search attention index (SAI) explains the variation in the weekly excess return of stocks. The study finds that the estimated abnormal return of a portfolio based on search intensity is significantly high...

This study examines the impact of stock market liquidity on a stock price crash, using firm data from Borsa Istanbul for the period 2009-2019. The results show that higher stock liquidity increases the likelihood of stock price crashes, but this positive link is not driven by blockholder...

This study investigates whether investors' overreactions to blockchain-related announcements is driven by corporate executive opportunism in the Chinese capital market. We manually collect blockchain-related announcements made by Chinese listed firms over 2016–2022 and conduct an event study...

We study the causal impacts of a tick size reduction policy in highly liquid stocks, exploiting a unique experiment in Borsa Istanbul leading to substantial exogenous variation in the tick size. Adapting a differences-in-differences strategy with a novel limit order and trade book data with...