Option prices vary with not only the underlying asset price, but also volatilities and higher moments. In this paper, we use a portfolio of options to seclude the value change of the portfolio from the impact of volatility and higher moments. We apply this portfolio approach to the price...

Motivated by the growing literature on options as non-redundant assets, we investigate how option trading impacts underlying stock prices in the cross section controlling for stock market activities. We find both option trades and quotes are able to predict future stock price movement but stock...

After executing option orders, options market makers turn to the stock market to hedge away the underlying stock exposure. As a result, the stock exposure imbalance in option transactions translates into an imbalance in stock transactions. This paper decomposes the total stock order imbalance...

We propose that the volatility of order flow is a proxy for costs of information asymmetry, as order flow volatility varies positively with parameters that also influence adverse selection costs of trading. Empirically, order flow volatility is significantly higher prior to earnings or merger...

Option listing increases informed and uninformed trading by 12.4% and 23.9%, respectively, in the US between 2001 and 2010, hence reducing relative information risk. We establish the causal effects using control stocks with similar propensities of listing and a quasi-natural experiment using...

We explore the causal relationship between the legal doctrine of fiduciary duties and market price response in the setting of collectively selling subdivided residential real estates, the en bloc sales, in Singapore. We used a unique legal shock in 2009, the Ng Eng Ghee v. Mamata Kapildev Dave...

Government agencies routinely allow pre-release access to information to accredited news agencies under embargo agreements. Using high frequency data, we find evidence consistent with informed trading during embargoes of the Federal Open Market Committee's scheduled announcements. The E-mini S&P...

Underlying each stock trades hundreds of options at different strike prices and maturities. The order flow from these option transactions reveals important information about the underlying stock price movement and its volatility variation. How to aggregate the trade information of different...

Underlying each stock trades hundreds of options at different strike prices and maturities. The order flows from these option transactions reveal important information about the underlying stock price. How to aggregate the trade information of different option contracts underlying the same stock...

We study market-timing strategies on a given portfolio to achieve a particular risk or return target. Targeting a constant risk level leads to increasing investment at better investment opportunities whereas targeting a constant expected return does the opposite. Theoretical and numerical...