Realistic volatility risk premia
The volatility risk premium compensates investors for taking volatility risk. Conceptually it is based on the difference between options-implied and expected realized volatility. In...
Algorithmic strategies: managing the overfitting bias
The business of algorithmic trading strategies creates incentives for model overfitting and backtest embellishment: researchers must pass Sharpe ratio thresholds for their strategies to...
The dangerous disregard for fat tails in quantitative finance
The statistical term ‘fat tails’ refers to probability distributions with relatively high probability of extreme outcomes. Fat tails also imply strong influence of extreme...
Market dynamics: belief, risk, and ambiguity effects
To understand financial market dynamics, it is helpful to distinguish beliefs, attitudes towards risk, and attitudes towards ambiguity. Beliefs are subjective evaluations of future...
How systemic financial risk is measured
Public institutions have developed a wide range of methods to track systemic financial risk. What most of them have in common is reliance on...
Diversified reward-risk parity
Risk parity is a portfolio construction technique that seeks to equalize risk contributions from the different components of the portfolio. Risk parity with respect...
How to estimate risk in extreme market situations
Estimating portfolio risk in extreme situations means answering two questions: First, has the market entered an extreme state? Second, how are returns likely to...
How to manage systemic risk in asset management
Systemic crises are rare but critical for long-term performance records. When the financial system fails, good trades become bad trades and many sensible investment...
Equity alpha through volatility targeting
Volatility targeting has historically enhanced the statistical alpha of standard equity strategies. That is because volatility is more predictable in the short-term than returns....
Interest rate swap returns: empirical lessons
Interest rate swaps trade duration risk across developed and emerging markets. Since 2000 fixed rate receivers have posted positive returns in 26 of 27...