iShares National Muni Bond ETF (MUB) Volatility Skew

Implied volatility skew shows how IV varies across strike prices for a given expiration. Steeper skews indicate higher demand for downside protection relative to upside speculation.

Snapshot as of Apr 21, 2026.

Spot Price

$107.31

ATM IV

446.1%

IV Skew 25Δ

0.01

As of Apr 21, 2026, iShares National Muni Bond ETF (MUB) at-the-money implied volatility is 446.1%. The 25-delta skew is +0.012 — skew is roughly flat across the 25-delta wings. High IV rank typically favors premium-selling strategies; low IV rank favors premium-buying.