Volatility & Variance: Reading the Risk Fingerprint
VWRL.AS (Vanguard FTSE All-World UCITS ETF EUR) carries an annualised volatility of 12.6%, categorised as moderate relative to the long-run US equity benchmark of approximately 15%. VUSA.AS (Vanguard S&P 500 UCITS ETF) registers at 14.2%, a moderate reading by the same standard.
VUSA.AS is marginally more volatile than VWRL.AS by 1.7% 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, VWRL.AS's maximum peak-to-trough drawdown of 18.7% represents a notable pullback over the study period. VUSA.AS's worst drawdown of 17.5% was a notable pullback. VUSA.AS 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.