This study examines the impacts of net buying pressure on implied volatility, and documents the fact that Bollen and Whaley (2004)'s net buying pressure hypothesis does not hold in the daily data of the KOSPI200 options market. In addition, using intraday data, we show that the net buying...

We examine the effect of transaction costs on implied volatility structure, parameter estimation, and hedging. Using simulations, we document that: (1) Transaction costs can generate the volatility smile phenomena even in the Black-Scholes economy. Especially, volatility smile effect is very...

In the U.S. stock and options markets from January 1996 to December 2013, we examine whether information uncertainty explains the discrepancy between historical and implied volatilities in Goyal and Saretto (2009). In addition, we clarified the impact of the uncertainty on the stock market as...

Korean Abstract: 본 논문은 기업의 청산비용이 존재하는 경우에 채권자의 최적의사결정이 기업의 신용위험에 미치는 영향에 대해 연구하였다. 기업의 파산이 기업 가치에 의해 외생적으로 주어지는 Merton 모형과는 달리...

Duarte and Young (2009) decompose PIN into adjusted PIN (AdjPIN) and probability of trading caused by symmetric order flow shocks (PSOS). We explore sources of PSOS in the Korean stock market and examine the relation between PSOS and stock returns. Using transaction data with trader types and...

We develop an efficient Monte Carlo simulation-based methodology for value at risk (VaR) and sensitivity analysis of mortgage-backed securities (MBS) that employs an importance sampling technique developed for quadratic VaR models. Our approach, whose validity is derived from a fundamental...

Independent sector assumption in the CreditRisk+ has been a major obstacle to implementing the model. Attempts to overcome this limitation have not gained much success. This paper proposes an extension of the original model which accommodates a wide range of sector covariance structures....

We estimate an ex ante probability of extreme negative returns (crashes) of individual stocks as a measure of potential overpricing and find that stocks with a high probability of crashes earn abnormally low returns. Stocks with high crash probability are overpriced regardless of the level of...

We develop a conditional version of the consumption capital asset pricing model (CCAPM) using the conditioning variable from the cointegrating relation among macroeconomic variables (dividend yield, term spread, default spread, and short-term interest rate). Our conditioning variable has a...

We develop a conditional version of the consumption CAPM using the conditioning variable derived from the cointegrated relationship among macroeconomic variables (dividend yield, term spread, default spread, and short-term interest rate). Our conditioning variable has a strong power to predict...