CENTURY ALUMINUM CO (CENX) Implied Volatility
CENTURY ALUMINUM CO (CENX) options trade at a 30-day at-the-money implied volatility of 68.5%, an IV rank of 27 out of 100 over the past year. This page breaks down CENX's implied volatility in plain English: where it sits versus its own history, how it compares with realized movement, and what the term structure and skew are saying.
Data as of Jul 10, 2026, 8:00 PM ET · OPRA data 15 minutes delayed · For information only — not investment advice.
Implied Volatility & Expected Move
CENX 30-day at-the-money implied volatility, past year.
| ATM IV — front expiration | 68.5% |
| ATM IV — 2 month | 75.7% |
| ATM IV — 3 month | 76.4% |
| IV rank (1 year) | 27 / 100 |
| IV percentile (1 year) | 18% |
| Expected move (front expiration) | ±$4.28 (±9.5%) |
| Historical volatility — 10 day | 71.1% |
| Historical volatility — 21 day | 84.3% |
| Historical volatility — 30 day | 71.7% |
| Historical volatility — 60 day | 71.6% |
| IV / HV ratio | 0.95 |
| Term slope (front − 3M) | -7.9 pts |
| 25Δ skew (front) | +0.4 pts |
An IV rank of 27 places current implied volatility in the lower part of its 52-week range. An IV/HV ratio of 0.95 means implied volatility is roughly in line with recent realized volatility. The term structure is in contango — front-month IV sits below 3-month IV, the typical shape in calm markets.
CENX IV Rank History
CENX IV rank (0–100), past year.
IV rank has fallen from 38 in Feb '26 to 27 today. An IV percentile of 18% means implied volatility was lower than today on 18% of trading days in the past year.
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CENX Options FAQ
What is the implied volatility of CENX options?
CENX options trade at a 30-day at-the-money implied volatility of 68.5% as of Jul 10, 2026. That is an IV rank of 27 out of 100, meaning implied volatility is subdued relative to its own 52-week range.
Is CENX implied volatility high or low right now?
By its own 52-week standards, CENX implied volatility is currently low: IV rank is 27 out of 100 as of Jul 10, 2026. Compared with realized movement, the IV/HV ratio of 0.95 shows options pricing less movement than the stock has recently delivered.
What move do CENX options imply before the next expiration?
Front-expiration CENX options imply a one-standard-deviation move of ±$4.28 (±9.5%) as of Jul 10, 2026, derived from at-the-money option prices.
What is the difference between CENX's IV rank and IV percentile?
IV rank (currently 27) measures where today's implied volatility sits between its 52-week low and high. IV percentile (currently 18%) counts the share of trading days in the past year with lower implied volatility than today. Percentile is less distorted by one-off volatility spikes.
Methodology. IV rank compares the current 30-day at-the-money implied volatility with its highest and lowest values over the past 52 weeks. Max pain is the strike that minimizes the total payout to option holders at expiration. The call and put walls are the strikes carrying the largest call and put open interest across all expirations. Net gamma exposure (GEX) is measured from the dealer perspective. All statistics are derived from delayed OPRA options data.
Options trading involves significant risk, and losses can exceed your initial investment. Always consult a licensed financial professional before making investment decisions. OptiView does not provide financial advice; all figures on this page are descriptive statistics, not recommendations.