February 24th, 2009, 6:47 pm
Portfolio Insurance has been around since the 80's (at least). Its still popular today, and has evolved somewhat over the years (additional of volatility control, for example). Obviously, given the recent market turmoil the case for CPPI has improved.In terms of asset allocation models, the standard is mean-variance optimization (CAPM). This attempts to optimize the expected returns for unit of risk (volatility). Its big shortcoming is that it ignores skew & kurtosis, i.e. fat tails. Multi-dimensional optimisation can be used to construct portfolios which optimise on the parameters. Mark Anson's book is an interesting starting point.