TransAlta Corporation (TAC) IV/HV History
Comparing implied volatility to historical (realized) volatility reveals whether options are priced rich or cheap relative to actual price movement. Persistent gaps can signal trading opportunities.
TransAlta Corporation (TAC) operates in the Utilities sector, specifically the Independent Power Producers industry, with a market capitalization near $3.78B, listed on NYSE, employing roughly 1,165 people, carrying a beta of 0.43 to the broader market. TransAlta Corporation owns, operates, and develops a diverse fleet of electrical power generation assets in Canada, the United States, and Australia. Led by John Harry Kousinioris, public since 2001-07-31.
Snapshot as of May 15, 2026.
- Spot Price
- $12.82
- ATM IV
- 46.0%
- HV 20-Day
- 34.7%
- HV 60-Day
- 33.1%
- IV Rank
- 25.4%
- IV Percentile
- 38.5%
As of May 15, 2026, TransAlta Corporation (TAC) ATM implied volatility is 46.0%. 20-day realized volatility is 34.7%, producing an IV-HV spread of +11.3 vol points. Options are pricing in more volatility than the stock has recently delivered, the volatility risk premium. IV rank is 25.4%.
How TAC iv/hv history Data Feeds Strategy Selection
Strategy selection on TransAlta Corporation options does not derive from any single metric in isolation. The iv/hv history view above sits inside a broader read: ATM IV currently sits at 46.0% and dealer gamma exposure is positive, so dealer hedging is mechanically mean-reverting. Combine the iv/hv history data here with the volatility-skew surface, dealer-gamma exposure, max-pain level, and upcoming-events calendar to build a positioning thesis. Risk-defined structures (credit spreads, debit spreads, iron condors) are usually safer than naked positions while the regime is uncertain; the data on this page anchors the inputs but does not by itself constitute a trade thesis.
Learn how implied vs realized volatility is reported and how to read the data →
Frequently asked TAC iv/hv history questions
- Is TAC options pricing rich or cheap right now?
- As of May 15, 2026, TransAlta Corporation (TAC) ATM IV is 46.0% against 20-day realized volatility of 34.7%. IV rank is 25.4%. TAC options are pricing in more volatility than the stock has recently realized: a positive variance risk premium worth 11.3 vol points.
- What is the TAC variance risk premium?
- The variance risk premium is the persistent gap between implied and subsequently realized volatility. In equity markets it averages positive because option sellers demand compensation for bearing variance shocks. TAC is currently priced consistently with this premium, which is one input to whether short-vol or long-vol structures carry their typical edge.
- What does TAC IV rank mean for strategy selection?
- IV rank normalizes the current ATM IV to its 1-year range: 0% is the low, 100% is the high. TAC's current rank of 25.4% signals where current pricing sits in its own 1-year history. High-rank regimes typically favor premium-selling structures (credit spreads, condors, covered calls); low-rank regimes typically favor premium-buying or long-volatility structures.