A Devilish Question for Option Sellers: Which VRP Is Higher?

Key Takeaways

• Implied vol consistently exceeds trailing realized vol in HYG
• VRP ratio inflates premium when realized volatility is low
• Ratio vs spread measurement changes cross‑asset comparison
• Vega and gamma liquidity differ, affecting option‑selling strategies
• Mis‑measuring VRP can mask true risk‑adjusted returns

Pulse Analysis

Volatility risk premium (VRP) remains a cornerstone of options theory, reflecting the tendency of implied volatility (IV) to sit above realized volatility (RV). Practitioners view this gap as a built‑in edge for sellers, who can collect the premium by writing options. Yet the premium’s size and persistence depend on market conditions, such as mean‑reversion expectations, and on the specific asset class. Understanding VRP helps investors gauge whether the apparent overpricing translates into real, risk‑adjusted returns.

Measurement matters. The article contrasts two common VRP metrics: a ratio (IV/RV) and a spread (IV‑RV). In a low‑volatility environment like the high‑yield ETF HYG, the ratio can suggest a 40‑100% premium, while the spread appears modest. Ratios normalize across assets, making cross‑sectional comparisons easier, but spreads may better capture absolute cost. The choice of metric influences trading signals, especially when realized volatility spikes or collapses, as IV tends to lag, creating a sticky premium that can be exploited—or misread.

For option sellers, the nuance extends beyond numbers. Vega and gamma exhibit distinct liquidity profiles; longer‑dated (vega‑rich) contracts are often illiquid, while near‑dated (gamma‑rich) options trade more actively. Mis‑measuring VRP or ignoring liquidity constraints can erode the expected edge, turning a seemingly attractive premium into hidden risk. Traders should therefore blend multiple VRP calculations, monitor underlying volatility regimes, and align execution strategies with the specific liquidity characteristics of the options they trade. This disciplined approach safeguards against over‑reliance on a single metric and improves the odds of capturing genuine VRP gains.