AC Immune S.A. (ACIU) 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.
AC Immune S.A. (ACIU) operates in the Healthcare sector, specifically the Biotechnology industry, with a market capitalization near $289.0M, listed on NASDAQ, employing roughly 133 people, carrying a beta of 1.63 to the broader market. AC Immune SA, a clinical stage biopharmaceutical company, discovers, designs, and develops medicines and diagnostic products for the prevention and treatment of neurodegenerative diseases associated with protein misfolding. Led by Andrea Pfeifer, public since 2016-09-23.
Snapshot as of May 15, 2026.
- Spot Price
- $2.81
- ATM IV
- 23.5%
- IV Rank
- 1.2%
- IV Percentile
- 0.8%
- Term Structure Slope
- -0.024
As of May 15, 2026, AC Immune S.A. (ACIU) at-the-money implied volatility is 23.5%. IV rank is 1.2% (where 0% is the 52-week low and 100% is the 52-week high). IV percentile is 0.8%. High IV rank typically favors premium-selling strategies; low IV rank favors premium-buying.
ACIU Strategy Selection at Current Volatility Levels
For AC Immune S.A. options at 23.5% ATM IV, low IV rank (1.2%) favors premium-buying or long-vol structures: long calls or puts, debit spreads, calendar spreads, long straddles. The risk: low-rank regimes can persist for months while time decay eats premium-buyers alive. Pair the vol-rank read with the dealer-gamma view and the upcoming-events calendar to confirm the strategy fits both the structural regime and the path-dependent risk. The variance risk premium - the persistent gap between implied and subsequently realized vol - is positive in equity markets on average; high IV rank typically reflects a stretch where the premium is wider than usual.
Learn how volatility skew is reported and how to read the data →
Frequently asked ACIU volatility skew questions
- What is the current ACIU ATM implied volatility?
- As of May 15, 2026, AC Immune S.A. (ACIU) at-the-money implied volatility is 23.5%. IV rank is 1.2% on a 0-100% scale anchored to the 1-year IV range. ATM IV is the volatility input that makes a Black-Scholes-equivalent model reproduce the listed at-the-money option prices.
- Is ACIU IV high or low historically?
- IV is subdued relative to its 1-year history, conditions that typically favor premium-buying strategies (long calls, long puts, debit spreads, calendar spreads).
- What does ACIU volatility skew tell options traders?
- Volatility skew is the pattern by which IV varies across strikes for a given expiration. Skew matters for risk-defined strategy selection: when downside puts are rich, put-credit spreads capture more premium; when upside calls are rich, call-credit spreads or covered-call writes harvest more.