Defensive Equity strategies are constructed to target specific Equity factors, with the goal of generating stable returns while also seeking to provide downside protection, by balancing exposures across dimensions of Equity risk.
With increasing investor interest in low-volatility equity strategies comes a need for greater scrutiny of different methodologies used to achieve low-volatility exposure.
more robust ways of achieving low-volatility portfolios without this input sensitivity
Finding that a traditional optimizer-based approach to building low-volatility portfolios has large sensitivities to the risk inputs used in the process
The Risks Often Ignored in Low-Volatility Investing. Risk Analytics
Equity portfolio tracking error to a benchmark is a most ubiquitous restriction for active portfolios as prescribed by fiduciaries. The restriction is typically a tight range with minimum and maximum ex-ante extremes. The typical cap-weighted benchmark (i.e., S&P 500) has significant changes in diversification character over time.
This brings into question the sensibility of holding tracking error constant for a skilled active manager.