Select Medical Holdings Corporation (SEM) 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.
Select Medical Holdings Corporation (SEM) operates in the Healthcare sector, specifically the Medical - Care Facilities industry, with a market capitalization near $2.04B, listed on NYSE, employing roughly 30,000 people, carrying a beta of 0.80 to the broader market. Select Medical Holdings Corporation, through its subsidiaries, operates critical illness recovery hospitals, rehabilitation hospitals, outpatient rehabilitation clinics, and occupational health centers in the United States. Led by Thomas Mullin, public since 2009-09-25.
Snapshot as of May 15, 2026.
- Spot Price
- $16.51
- ATM IV
- 155.2%
- HV 20-Day
- 1.3%
- HV 60-Day
- 22.4%
- IV Rank
- 45.3%
- IV Percentile
- 90.9%
As of May 15, 2026, Select Medical Holdings Corporation (SEM) ATM implied volatility is 155.2%. 20-day realized volatility is 1.3%, producing an IV-HV spread of +153.9 vol points. Options are pricing in more volatility than the stock has recently delivered, the volatility risk premium. IV rank is 45.3%.
How SEM iv/hv history Data Feeds Strategy Selection
Strategy selection on Select Medical Holdings 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 155.2% and dealer gamma exposure is negative, so dealer hedging amplifies directional moves. 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 SEM iv/hv history questions
- Is SEM options pricing rich or cheap right now?
- As of May 15, 2026, Select Medical Holdings Corporation (SEM) ATM IV is 155.2% against 20-day realized volatility of 1.3%. IV rank is 45.3%. SEM options are pricing in more volatility than the stock has recently realized: a positive variance risk premium worth 153.9 vol points.
- What is the SEM 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. SEM 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 SEM 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. SEM's current rank of 45.3% 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.