Quick answer: India VIX is the National Stock Exchange’s volatility index. It uses NIFTY option prices to show how much the market expects the index to move over the next 30 calendar days. It was in focus in early November 2026 because market reports said it stayed near 15 even as share prices rose for five sessions in a row.
Why India VIX is in the news
Market coverage carried in current-affairs digests on 5 November 2026 said Indian equity benchmarks had gained for five straight sessions, yet India VIX had stayed around the 15 mark. Rising prices usually pull the volatility index down. A VIX that stays firm during a rally suggests traders are still paying for protection against sharp swings. This is why the index is often called the market’s “fear gauge”.
What India VIX measures
According to NSE, a volatility index measures the market’s expectation of volatility over the near term. Volatility is the rate and size of price changes, and in finance it is often treated as risk. India VIX is shown as an annualised percentage, for example 20%. It is built from the order book of NIFTY index options, not from share prices.
This makes it different from a price index such as NIFTY 50. NIFTY shows which way the market has moved; India VIX shows how much movement option traders expect ahead, in either direction.
Key facts about India VIX
- Computed by: the National Stock Exchange of India (NSE).
- Based on: best bid-ask quotes of near-month and next-month NIFTY options traded in NSE’s F&O segment.
- Time horizon: expected volatility over the next 30 calendar days.
- Method: the CBOE VIX methodology, adapted to the NIFTY options order book, including the use of cubic splines.
- Reading: higher India VIX means higher expected volatility, and vice versa.
- Name: “VIX” is a trademark of the Chicago Board Options Exchange (CBOE), licensed to NSE through Standard & Poor’s.
How NSE calculates India VIX
| Input | What NSE uses |
|---|---|
| Options | Mainly out-of-the-money calls (strikes above K0) and puts (strikes below K0) |
| Forward index level (F) | Latest traded price of the NIFTY futures contract of the same expiry |
| At-the-money strike (K0) | The strike just below F |
| Time to expiry (T) | Counted in minutes and converted to years |
| Risk-free rate (R) | NSE MIBOR of the matching tenure (30 or 90 days) |
| Missing or poor quotes | If the bid-ask spread is over 30% of the mid price, or no quote exists, the price is estimated with a natural cubic spline |
| Roll-over | Moves to the next and far month when 3 trading days are left to expiry (CBOE rolls with less than a week left) |
| Final value | Square root of the computed variance (σ) × 100 |
NSE uses the futures price as the forward level because the NIFTY futures market is large and liquid. CBOE instead finds the strike where call and put prices are closest.
Reading the number
Because India VIX is annualised, a reading of 15 means the options market expects the NIFTY to move within roughly 15% over a year. To get a rough 30-day figure, divide by the square root of 12: 15 ÷ 3.46 gives about 4.3%. A sudden spike in VIX often comes with a sharp fall in stock prices, which is why the two usually move in opposite directions. The link is not fixed, though. As the November 2026 reports show, VIX can stay high while prices rise if traders expect trouble ahead.
Exam angle: how NDA, CDS and CAPF can ask this
- Expect simple matching questions: India VIX with NSE, Sensex with BSE, and VIX with CBOE in the United States.
- Economy sections of CDS and CAPF papers test the meaning of terms like derivatives, options, futures and volatility.
- Know the regulator: the Securities and Exchange Board of India (SEBI) oversees stock exchanges.
Practice MCQs
Q1. India VIX is calculated using the prices of:
(a) NIFTY 50 constituent shares (b) NIFTY index options (c) Government bonds (d) Rupee-dollar futures
Answer: (b) — it is built from the order book of NIFTY options.
Q2. India VIX indicates expected volatility over the next:
(a) 7 days (b) 30 calendar days (c) 90 days (d) One year only
Answer: (b) — NSE defines its horizon as the next 30 calendar days.
Q3. Which interest rate does NSE use as the risk-free rate for India VIX?
(a) RBI repo rate (b) 10-year G-sec yield (c) NSE MIBOR of the relevant tenure (d) SBI fixed deposit rate
Answer: (c) — 30-day or 90-day NSE MIBOR is used.
Q4. The VIX methodology was first developed by:
(a) NSE (b) London Stock Exchange (c) Chicago Board Options Exchange (d) Tokyo Stock Exchange
Answer: (c) — CBOE introduced a volatility index for US markets in 1993.
Frequently asked questions
What is India VIX?
India VIX is a volatility index computed by NSE from NIFTY option prices. It shows the market’s expected volatility over the next 30 calendar days, as an annualised percentage.
Why is India VIX called the fear index?
It usually rises when traders expect sharp market moves and rush to buy option protection, so a higher reading signals more nervousness.
How is India VIX different from NIFTY?
NIFTY is a price index that tracks the direction of share prices. India VIX does not show direction; it shows how much movement is expected.
Whose methodology does India VIX follow?
It follows the CBOE VIX methodology, adapted by NSE for the NIFTY options order book, including cubic spline fitting for missing quotes.
What does a VIX of 15 mean?
It means the options market expects annualised NIFTY volatility of about 15%, which works out to roughly 4.3% over a 30-day period.
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Sources: NSE: India VIX, NSE White Paper on India VIX. Facts as reported up to 6 November 2026.
Featured image background (representative): Ganesh Dhamodkar / Wikimedia Commons, CC BY-SA 4.0.
