This paper incorporates a time-varying intensity of disasters in the Rietz-Barro hypothesis that risk premia result from the possibility of rare, large disasters. During a disaster, an asset’s fundamental value falls by a time-varying amount. This in turn generates time-varying risk premia and...

This paper derives in closed form the optimal dynamic portfolio policy when trading is costly and security returns are predictable by signals with dierent mean-reversion speeds. The optimal updated portfolio is a linear combination of the existing port- folio, the optimal portfolio absent...

In a model with multiple agents with different risk aversions facing margin constraints, we show how securities’ required returns are characterized both by their beta and their margins. Negative shocks to fundamentals make margin constraints bind, lowering risk free rates and raising Sharpe...

Several proxy measures have been proposed in the literature to capture the multidimensional aspects of liquidity. Lower dimensional descriptions of the same can be obtained using factor analysis. The literature contains factor analyses of market-wide averaged liquidity measures and their changes...

Little is known about the exact sources and risks of hedge fund's market neutral strategies. Based on existing views on arbitrage trading, such as done by hedge funds, we formulate and test a hypothesis that market neutrality is affected by market-wide liquidity. We find that such is the case...

This paper investigates the effect of credit risk on the return of stocks. We construct a systematic factor in relation to credit risk using the credit spreads of individual firms measured from the Merton (1974) model. This enables us to include firms without credit spreads or ratings...

Following the COVID-19 pandemic, the healthcare sector has emerged as a resilient and profitable domain amidst market fluctuations. Consequently, investing in healthcare securities, particularly through mutual funds, has gained traction. Existing research on predicting future prices of...

It is well known that the volatility spillover increases when a large economic shock occurs, and then the volatility spillover pattern in the market changes. Accordingly, many papers note that clarifying the time-varying pattern of volatility transmission in domestic and international markets is...