Volatility & Variance: Reading the Risk Fingerprint
XLY.US (Consumer Discretionary Select Sector SPDR® Fund) carries an annualised volatility of 20.3%, categorised as elevated relative to the long-run US equity benchmark of approximately 15%. VCR.US (Vanguard Consumer Discretionary Index Fund ETF Shares) registers at 21.4%, a elevated reading by the same standard.
VCR.US is marginally more volatile than XLY.US by 1.1% annualised. For most US long-term investors this difference is unlikely to be psychologically meaningful, though it will compound over multi-decade holding periods.
On the downside, XLY.US's maximum peak-to-trough drawdown of 36.3% represents a catastrophic peak-to-trough collapse over the study period. VCR.US's worst drawdown of 35.2% was a catastrophic peak-to-trough collapse. VCR.US demonstrated stronger capital preservation characteristics, absorbing market shocks with less peak-to-trough damage.
When evaluating these two funds for a US-domiciled portfolio, it is important to consider that volatility and drawdown metrics are calculated on trailing historical data. Past standard deviations do not guarantee future behaviour, particularly around US Federal Reserve policy shifts, which have historically been the primary driver of cross-asset correlation breakdowns.