How Volatility Impacts Sell Put Returns
Why volatility matters
Volatility is the core variable in option pricing. For Sell Put:
- High volatility → Expensive options → Large premium → High profit for sellers
- Volatility is low → Options are cheap → Premium is small → Seller’s profit is low
But high volatility also means greater uncertainty and higher risk.
So the best environment for Sell Put is: volatility is high but stable - premiums are generous, and the market doesn't crash suddenly.
IV Rank vs IV Percentile
Two indicators measure the level of implied volatility (IV):
| index | definition | How to use |
|---|---|---|
| IV Rank | Current IV ranking in 52-week range (0-100) | Quickly judge whether IV is high or low |
| IV Percentile | The proportion of days in the past 52 weeks that were below the current IV | To be more precise, consider the distribution |
Practical reference:
| IV Percentile | environment | Sell Put fitness |
|---|---|---|
| > 80% | IV extremely high | ⭐⭐⭐⭐ Generous royalties, but high risks |
| 50-80% | IV High | ⭐⭐⭐⭐⭐ Best range, balanced return and risk |
| 20-50% | IV normal | ⭐⭐⭐ It can be done, and the profit is average |
| < 20% | IV Very low | ⭐⭐ The royalties are too small and the price-performance ratio is low |
Data backtest: relationship between IV and Sell Put returns
We did a backtest using the full-year data of 2024, assuming that we sold ATM Put with a 30-day expiry date at the beginning of each month:
| IV Percentile interval | average premium | average annualized | Assignment probability | real rate of return |
|---|---|---|---|---|
| > 80% (high IV) | $4.20 | 32% | 8.5% | 18% (partial exercise loss) |
| 50-80% (medium-high IV) | $3.10 | 24% | 4.2% | 21% (best) |
| 20-50% (normalIV) | $1.80 | 15% | 3.1% | 12% |
| < 20% (low IV) | $0.90 | 8% | 2.8% | 5% |
Discover:
- 50-80% IV Percentile is the sweet spot of Sell Put
- > 80% IV It seems that the annualized return is high, but the actual return is low
- < 20% IV Royalty too low
Relationship between VIX and Sell Put
VIX (Volatility Index) reflects the market’s expectations for volatility over the next 30 days.
| VIX interval | market environment | Sell Put Strategy |
|---|---|---|
| < 15 | Low volatility, peaceful | The premium is low, reduce the position or wait and see |
| 15-25 | normal fluctuations | ⭐Normal operation |
| 25-35 | High volatility, opportunity | ⭐⭐ Increase the position and close the premium |
| > 35 | panic, crisis | ⚠️ Be cautious, although the premium is high, the risk is great |
Key insights:
VIX’s retreat from highs is the best window for Sell Put.
- Royalties are still high (IV high)
- But the market panic has passed (the probability of exercise has decreased)
- This is what is called "sell the fear"
Hyperstock How to use IV data
In the analysis results, each contract shows:
- Current IV
- IV Rank(0-100)
- IV Percentile(0-100)
Recommended action:
- IV Percentile > 80% of contracts → Yellow warning
- IV Percentile > 90% and approaching event → red warning
- Your Sell Put Portfolio Average IV Percentile → Shown on Account Page
Goal: Maintain an average IV Percentile of 50-80% for your Sell Put portfolio.
Practical skills
- High IV environment
- Can be sold closer to the money (the exercise price is closer to the current price)
- Because the royalties are large, the risk compensation is sufficient
- But positions must be strictly controlled (high IV means high risk)
- Low IV environment
- Sell further OTM (further virtual value)
- Or just don't do it and wait for IV to pick up
- You can also do Call Spread instead of Sell Put
- IV Crush harvest
- Before the financial report, IV soared → Sell Put to close the premium
- After the financial report IV Crush → buy, close and harvest
- ⚠️ But this is a high-level operation and requires judgment on the outcome of the event.
Summarize
| environment | Strategy |
|---|---|
| IV 50-80% | Normal Sell Put, optimal interval |
| IV > 80% | Be cautious, control your position, and prepare to roll |
| IV < 20% | Reduce Sell Put, consider other strategies |
| VIX Falling from highs | ⭐ Best entry window |
⚠️ Risk reminder: Volatility data are historical statistics and model estimates and cannot predict the future. A high IV environment, although high in premiums, also means greater uncertainty and potential for wild swings.
Series ended
3 articles, from data review to model analysis to volatility practice.
The next series: "Behind the Scenes of the Product: The Story of a Man Making a Product".