Volatility & Variance: Reading the Risk Fingerprint
ICLN.US (iShares Global Clean Energy ETF) carries an annualised volatility of 27.8%, categorised as high relative to the long-run US equity benchmark of approximately 15%. QCLN.US (First Trust NASDAQ® Clean Edge® Green Energy Index Fund) registers at 34.7%, a high reading by the same standard.
QCLN.US carries meaningfully higher annualised volatility than ICLN.US — a 6.8% gap that, under normal return distributions, implies a wider range of year-over-year outcomes and a greater likelihood of a 20%-or-more drawdown in any given calendar year.
On the downside, ICLN.US's maximum peak-to-trough drawdown of 60.8% represents a catastrophic peak-to-trough collapse over the study period. QCLN.US's worst drawdown of 64.6% was a catastrophic peak-to-trough collapse. ICLN.US demonstrated stronger capital preservation during the period's worst stress events, which is particularly relevant for US investors approaching retirement or drawing down a portfolio.
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.