We examine the mechanism by which social media sentiment affects stock prices. Specifically, we assess the impact of Twitter feeds on stock returns at the intraday level. We find that an increase in buyer-initiated trades has a significantly positive price impact. The impact is stronger with an...

We examine whether brokers in order-driven markets possess an information advantage over their customers. We compare the price impact of proprietary trades to customer trades in Borsa Istanbul. We find an asymmetric effect: While proprietary buy trades lead to a significant price response...

The paper deals with the pattern of asset price dynamics as sequence of "bull markets" and "bear markets" and with stabilizing these" long swings" through replacing continuous asset trading with electronic auctions. First, the paper sketches the channels through which the "overshooting" of...

Latency delays — known as “speed bumps” — slow the execution of orders at an exchange, often to protect market makers against latency arbitrage. We study informed trading in a fragmented market, where one exchange introduces a latency delay on market orders. While liquidity improves at...

Despite the growing adoption of decentralized exchanges, little is known about their market quality. Using a comprehensive dataset, we compare decentralized blockchain-based venues (DEXs) to centralized crypto exchanges (CEXs) assessing two aspects of market quality: price efficiency and market...

Pervasive herding may cause homogenous trading patterns, both within and across stocks and thus may impact upon an important aspect of the market microstructure – liquidity. Potentially, herding could simultaneously affect the liquidity of both individual stocks and that of the market. For...

We assess the microstructure of the U.S. Treasury securities market following its migration to electronic trading. We model price discovery using a vector autoregression model of price and order flow. We show that both trades and limit orders affect price dynamics, suggesting that traders also...

Cross-asset market activity can be a channel through which illiquidity risks originating in one market can propagate to others. This paper examines the complex intra-day linkages between the U.S. equity securities market and the equity derivatives market using high-frequency data on S&P 500...

We explore the relation between limit order price clustering and price efficiency. We find that executed sell limit orders cluster more frequently on round increments than buy limit orders and that this asymmetry in clustering is consistent with the well documented asymmetry in price response to...

This paper studies the workup protocol, a unique trading feature in the U.S. Treasury securities market that resembles a mechanism for discovering dark liquidity. We quantify its role in the price formation process in a model of the dynamics of price and segmented order flow induced by the...