Existing studies on the impact of social media on the information efficiency of capital markets have opposing views. As a core feature of social media, the role of investor interaction is often overlooked. To fill this gap, using the social network analysis (SNA) method, we examine the...

This research link market microstructure with efficiency. Liquidity and volatility are linked with time-varying informational efficiency of the Asian emerging economies. Three measures are used for each variable. Using SGMM, this study finds that both variables have significant role in driving...

Existing studies on the impact of social media on the information efficiency of capital markets have opposing views. As a core feature of social media, the role of investor interaction is often overlooked. To fill this gap, using the social network analysis (SNA) method, we examine the...

National accounts are subject to major revisions. To improve the reliability of the first release data, it is important to know whether these revisions show systematic patterns, or in other words, whether national accounts are informational efficient in the sense that they incorporate all...

The present study contributes to the ongoing debate on possible costs and benefits of insider trading. We present a novel call auction model with insider information. Our model predicts that more insider information improves informational efficiency of prices, but this comes at the expense of...

We formulate a measure of information efficiency in a general, no-arbitrage semimartingale model of the price process. The market quality measure is applied to a high-frequency dataset from the interdealer FX market to identify changes in market efficiency after a decimalization of tick size.

We study the relation between equity market uncertainty and the informational efficiency of U.S. equity prices, proxied by the SPDR S&P 500 Trust ETF. Using the Baker, Bloom, and Davis (2016) equity market uncertainty index, we document a negative relation between market uncertainty and...

The timeliness of the credit rating of a firm has been frequently called into question over the previous two decades. This paper examines whether changes in credit ratings can be updated more frequently than at the frequency of updates in the accounting data. The paper finds that, when market...

This article sheds new light on the informational efficiency of the cryptocurrency market by analyzing investment strategies based on structural factors related to on-chain data. The study aims to verify whether investors in the cryptocurrency market can outperform passive investment strategies...

The ability of option-based measures to predict future stock returns is not a sufficient condition for the existence of incremental information in options. If options markets are informationally more efficient than the stock market, then option measures may be used to predict future actual stock...

This study investigates how exchange-traded fund (ETF) activity affects the informational efficiency of its underlying stocks in the Chinese market which has several different features from developed markets. We show that increased ETF ownership improves stock liquidity and attracts informed...

This study compares the pricing efficiency of two domestic exchange-traded funds (ETFs) (i.e., Falcom 30 and HSBC 20) listed on the Saudi stock exchange (i.e., Tadawul), as well as an international ETF (i.e., iShares MSCI Saudi Arabia) listed on the NYSE, by examining the extent and properties...

We empirically examine on-exchange hidden liquidity in the context of informed trading, pricing efficiency, and trading costs. Using a number of proxies for informativeness and a number of different specifications, we find that when an on-exchange option to hide orders exists, traders prefer to...

This paper analyzes the informational efficiency of OTC currency options on the Czech koruna and the Polish zloty correcting for the volatility risk premium and errors-in-variable problems, using state-of-the-art techniques (Chernov 2001). It finds that these markets are more efficient than...

Despite substantial differences in monetary policy and communication strategies, many central banks share the practice of purdah, a self-imposed guideline of abstaining from communication around policy meetings or other important events. This practice is remarkable, as it seems to contradict the...

Economic interactions, such as crowdfunding, often involve sequential actions, observational learning, and contingent project implementation. We incorporate all-or-nothing thresholds in a canonical model of information cascades. Early supporters effectively delegate their decisions to a...

National accounts are subject to major revisions. To improve the reliability of the first release data, it is important to know whether these revisions show systematic patterns, or in other words, whether national accounts are informational efficient in the sense that they incorporate all...

The present study contributes to the ongoing debate on possible costs and benefits of insider trading. We present a novel call auction model with insider information. Our model predicts that more insider information improves informational efficiency of prices, but this comes at the expense of...

We address a puzzle whereby lending marketplaces, aimed at directly connecting retail lenders and borrowers, retreat from auctions and take on the role of price setting and credit allocation, despite evidence that retail investors possess valuable soft and nonstandard information. Our analysis...

We propose a practical framework to detect mispricing, test informational efficiency and evaluate the behavioural biases within high-frequency prediction markets, especially in how prices react to news. We show this using betting exchange data for association football, exploiting the moment when...

The competitive market is informationally efficient; people only need to know prices to implement a competitive outcome. However, the standard formulation of competition neglects any underlying market microstructure; prices—which provide all necessary information—are exogenous. This paper...

We identify a novel economic mechanism through which passive ownership positively affects informational efficiency in the cross-section of firms. Passive ownership lowers the cost of capital, encouraging firms to invest more aggressively in risky growth opportunities. The resultant higher cash...

This paper examines the price impact of off-market block trades in futures markets. Consistent with previous literature based on stock markets [Gemmill, 1996, Journal of Finance], a statistically significant price reaction is documented around the time that the trades are executed. This paper...

This paper analyzes the role of passive blockholders in corporate governance using data on Schedule 13G filings. We show that firm value increases with the number and aggregate ownership of passive blockholders after controlling for other possible determinants of firm value. More importantly, we...