How to Use Implied Volatility Rank to Find the Best Covered Calls to Sell This Week

The Short Answer: IV Rank Tells You When Premium Is Worth Selling

Implied Volatility Rank (IV Rank, or IVR) measures where a stock's current implied volatility sits relative to its own range over the past 52 weeks. When IVR is high — say, above 50 — options are expensive compared to recent history, which means you collect more premium for the same risk. That is the core reason covered-call sellers track IVR every week before picking a trade.

Without IVR, you are guessing whether the premium you see is fat or thin. A $2.00 call on a $50 stock sounds decent, but if that stock normally trades at twice that implied volatility, you are actually selling cheap. IVR gives you the context to judge.

What IV Rank Actually Measures — and How to Calculate It

The formula is straightforward:

IVR = (Current IV − 52-Week IV Low) ÷ (52-Week IV High − 52-Week IV Low) × 100

If AAPL's 30-day implied volatility is currently 28%, its 52-week low IV was 18%, and its 52-week high IV was 48%, then:

IVR = (28 − 18) ÷ (48 − 18) × 100 = 10 ÷ 30 × 100 = 33

An IVR of 33 means current IV is in the bottom third of its annual range. Premium is below average. Most covered-call sellers would pass on this setup or accept a tighter strike.

Contrast that with NVDA during an earnings run-up. Suppose NVDA's current IV is 72%, its 52-week low is 40%, and its 52-week high is 90%. IVR = (72 − 40) ÷ (90 − 40) × 100 = 32 ÷ 50 × 100 = 64. Now premium is in the upper half of its range — a much more attractive environment for selling calls.

Note: Some platforms call this metric IV Percentile instead of IV Rank. They are related but not identical. IV Percentile counts the percentage of days in the past year where IV was lower than today. Both metrics point in the same direction; just confirm which one your broker displays. The Options Industry Council (OIC) publishes free educational material explaining both.

Building a Weekly Covered-Call Screener Around IVR

A practical screener has four filters. Apply them in order to cut your candidate list fast.

1. IVR above 40. This is a reasonable floor. Above 40 means IV is elevated relative to its own history. Many active sellers prefer IVR above 50 for a stronger edge, but 40 gives you more candidates on quiet weeks.

2. Stock price above $20 and average daily volume above 500,000 shares. Thin stocks have wide bid-ask spreads on their options. Wide spreads eat your premium before you even get filled. Stick to liquid names.

3. Options open interest above 500 contracts at your target strike. Low open interest means the market maker controls pricing. High open interest means tighter spreads and easier exits.

4. Earnings date outside your expiration window. Selling a covered call into an earnings announcement is a separate strategy with its own rules. For a standard weekly income trade, avoid holding through earnings unless you understand the volatility-crush risk on both sides.

Free screeners that show IVR include the CBOE's tools, thinkorswim's Market Watch tab, and Barchart.com's options screener. Run this filter every Sunday evening or Monday morning before the market opens.

Worked Example: Selling a Covered Call on NVDA Using IVR

Let's walk through a real-style trade setup. Assume it is a Monday morning and NVDA is trading at $875 per share. You already own 100 shares. Here is what you observe:

- NVDA 30-day IV: 58% - 52-week IV low: 38% - 52-week IV high: 95% - IVR: (58 − 38) ÷ (95 − 38) × 100 = 20 ÷ 57 × 100 ≈ 35

IVR of 35 is below your 40 threshold. Premium is below average for NVDA. You might skip this week or sell a closer strike than usual to compensate.

Now suppose the following Friday NVDA reports a supply-chain headline and IV spikes. NVDA is still at $875 but IV jumps to 74%. IVR recalculates to (74 − 38) ÷ (95 − 38) × 100 = 36 ÷ 57 × 100 ≈ 63. Now IVR is above 60 — premium is rich.

You look at the 14-day expiration chain. The $910 call (about 4% out of the money) is bid at $9.20 per contract, or $920 for 100 shares. Delta is roughly 0.28, meaning the market prices about a 28% chance of finishing in the money. You sell one contract at $9.20.

Breakeven on the upside: $875 + $9.20 = $884.20. If NVDA stays below $910 at expiration, you keep the full $920. If it closes above $910, your shares get called away at $910, and your total proceeds are $910 + $9.20 = $919.20 per share — still a solid outcome if you bought NVDA lower.

The IVR spike is what made this trade worth doing. Without checking IVR, you might have sold the same strike two weeks earlier for $4.50 and taken on the same assignment risk for half the reward.

Risks You Need to Understand Before You Sell

High IVR is a signal, not a guarantee. Here is what can go wrong.

Volatility stays high or goes higher. IVR being elevated does not mean it will fall. If the stock keeps moving violently, your short call can go deep in the money fast. You cap your upside but not your downside on the stock itself.

The stock drops hard. A covered call gives you a small cushion equal to the premium collected. On a $875 stock, a $9.20 premium protects you down to $865.80. A 10% drop still costs you roughly $78 per share net of premium. Covered calls are not a hedge — they are a yield enhancement. FINRA's investor education resources make this distinction clearly.

Early assignment risk. American-style equity options can be exercised any time before expiration. If your call goes deep in the money and the dividend date is approaching, there is a real chance the buyer exercises early to capture the dividend. The OIC covers early assignment mechanics in detail in its free options education courses.

Tax treatment. In the US, premiums from covered calls are generally treated as short-term capital gains regardless of how long you have held the stock, and the IRS has specific rules about how selling calls affects your holding period for qualified dividend treatment. In Canada, the CRA treats covered-call premiums as either capital gains or business income depending on your trading frequency and intent. Consult a tax professional before scaling up your covered-call activity.

How to Set Your Strike and Expiration Once You Have a High-IVR Candidate

IVR tells you when to sell. Delta and days-to-expiration (DTE) tell you where and how long.

For a conservative covered-call seller, target strikes with a delta between 0.20 and 0.35. That range puts you roughly 5% to 10% out of the money on most large-cap stocks and gives you a reasonable probability of expiring worthless while still collecting meaningful premium.

For expiration, the 21-to-45 DTE window is widely cited by options educators including the OIC as the sweet spot for theta decay. Time value erodes fastest in the final three weeks of an option's life. Selling at 30 DTE and closing at 50% of max profit (when the call has lost half its value) is a mechanical rule many retail sellers use to avoid holding through late-cycle gamma risk.

On high-IVR weeks, you can afford to go slightly further out of the money — say, a 0.25 delta instead of a 0.30 — because the elevated premium still meets your income target. This gives your stock more room to run before getting called away. On low-IVR weeks, if you sell at all, you may need to move closer to the money to collect the same dollar amount, which increases assignment risk. That trade-off is the core tension in covered-call management.

Putting It Together: A Simple Weekly Routine

Step 1 — Sunday evening: Pull up your broker's options screener or the CBOE's volatility tools. Filter your existing holdings for IVR above 40. Note any names above 60 as priority candidates.

Step 2 — Check the calendar: Confirm no earnings announcements fall within your target expiration window. One earnings surprise can wipe out months of premium income.

Step 3 — Pick your strike: Find the call with a delta between 0.20 and 0.35 in the 21-to-45 DTE range. Check the bid-ask spread. If the spread is wider than 10% of the mid-price, the liquidity is too thin.

Step 4 — Size the trade: Never sell calls on shares you are not willing to have called away. If you own 300 shares but only want to risk 100 being sold, sell one contract, not three.

Step 5 — Set a closing order: Immediately after selling, enter a good-till-cancelled buy order at 50% of the premium you received. If you sold for $9.20, set a buy order at $4.60. This locks in profit automatically and frees up the position for the next cycle.

This five-step routine takes about 20 minutes once you know your tools. The IVR filter is what keeps you from selling cheap premium in quiet markets and wondering why the math never seems to work out.

What is a good IV Rank for selling covered calls?

Most covered-call sellers look for an IVR of 40 or higher before selling, with 50 or above considered a strong setup. Below 40, the premium you collect is thin relative to the risk you are taking on. The exact threshold depends on your income target and how much assignment risk you are comfortable with.

Is IV Rank the same as IV Percentile?

No, they are related but different. IV Rank compares today's IV to the high and low of the past 52 weeks using a simple formula. IV Percentile counts what percentage of days in the past year had lower IV than today. Both tell you whether current premium is elevated, but they can give different readings on the same stock. Check which metric your broker displays so you are comparing apples to apples.

Can I use IV Rank on ETFs like SPY for covered calls?

Yes, and SPY is one of the most liquid options markets in the world, which keeps bid-ask spreads tight. SPY's IVR tends to spike around Federal Reserve announcements, major economic data releases, and broad market sell-offs. The same IVR rules apply — look for readings above 40 before selling calls on your SPY shares.

Does selling a covered call when IVR is high protect me from a stock drop?

Only partially. The premium you collect acts as a small buffer — on a $100 stock, a $3.00 premium protects you down to $97.00. A significant drop still results in a loss on your stock position. FINRA's investor education materials are clear that covered calls are an income strategy, not a hedging strategy.

How does selling covered calls affect my taxes in the US and Canada?

In the US, the IRS generally treats covered-call premiums as short-term capital gains, and selling calls can affect the holding period of your underlying shares, which matters for qualified dividend rates. In Canada, the CRA may treat premiums as capital gains or business income depending on how frequently you trade. Talk to a qualified tax professional before scaling up your covered-call activity in either country.

What happens to my covered call if IV drops sharply after I sell it?

A drop in implied volatility after you sell is actually good for you as the seller — it causes the call's price to fall faster than time decay alone would explain, letting you buy it back cheaper and close the trade early for a profit. This is called a volatility crush, and it is one reason some traders sell covered calls just before an anticipated volatility event resolves, such as after an earnings announcement.