FII options data shows how many index and stock option contracts foreign institutional investors hold as calls and puts, long and short, at the end of each trading day. The exchanges publish it in the participant-wise open interest report. This guide explains what each number means, how to read it, and where it can mislead. See also our home page on FII and DII data.
Key Takeaways
- The report splits FII option positions into calls and puts, and each into long and short contracts.
- A long call and a short put lean bullish. A short call and a long put lean bearish.
- Net call and net put figures turn raw counts into numbers you can compare from day to day.
- Many option positions are hedges, so the data describes exposure and does not reveal intent.
- Expiry can change open interest sharply without any change in view.
Table of Contents
- What Is FII Options Data?
- Where to Find FII Options Data and Who Is in It
- Calls and Puts: What Long and Short Mean
- How to Read FII Options Data Step by Step
- Index Options vs Stock Options in the Report
- Hedging or Directional? Limits of FII Options Data
- FII Options Data Around Expiry
- Worked Example: Reading FII Options Data
- Pros and Cons of FII Options Data
- FAQ
- The Bottom Line
What Is FII Options Data?
An option is a contract that gives the buyer a right, but not an obligation, to buy or sell an index or a stock at a fixed price on or before a set date. A call option is a right to buy. A put option is a right to sell. If you want a refresher on the basics, read what F&O means first.
FII options data counts how many of those open option contracts belong to foreign institutional investors. In the exchange reports this group is labelled FII and includes foreign portfolio investors. The figure is open interest, which means contracts still open at the end of the day. It is a snapshot of positions held and not a record of trades done during the day.
Why retail investors look at FII options data
Foreign investors are large participants in Indian markets, so many readers like to know how they are positioned. Options are used both to take a view and to protect a portfolio, which is why the data is rich but also easy to misread. It is one input among many and it does not say what will happen next.
Where to Find FII Options Data and Who Is in It
The National Stock Exchange lists daily derivatives files on its NSE derivatives reports page. One of them is the participant-wise open interest file. The BSE has a similar participant-wise trading volume and open interest page. Both are free to view. File names, layout and publishing time can change, so check the official site for the current format. The figures are end-of-day numbers, released after the market closes, and not a streaming feed.
If you prefer a summary, our page on NSE participant wise open interest walks through the same file, and our FII options activity tracker page covers the options side in one place.
The report groups traders into four buckets. Knowing who is in each stops you from mixing up the numbers.
- Client: individual and other non-institutional traders on their own account.
- DII: domestic institutions such as mutual funds and insurers.
- FII: foreign institutional investors and foreign portfolio investors.
- Pro: proprietary traders and brokers trading on their own books.
Calls and Puts: What Long and Short Mean
For each segment, the file shows four option rows for FIIs: call long, call short, put long and put short. Long means the FII bought the contract and holds it. Short means the FII sold, or wrote, the contract and is obliged to honour it if the buyer exercises it.
| Position | Plain meaning | Usual lean |
|---|---|---|
| Call long | Bought the right to buy | Bullish |
| Call short | Sold the right to buy | Neutral to bearish |
| Put long | Bought the right to sell | Bearish or protective |
| Put short | Sold the right to sell | Neutral to bullish |
Notice that two different rows can express the same view. A long call and a short put both gain when the market rises. A short call and a long put both gain when it falls. That is why you should look at all four rows together and not at one row alone.
How to Read FII Options Data Step by Step
From the four option rows you can work out a few simple measures. They turn large raw counts into numbers that are easy to compare.
- Net call position = call long minus call short.
- Net put position = put long minus put short.
- Bullish-lean contracts = call long plus put short.
- Bearish-lean contracts = call short plus put long.
- Bullish share = bullish-lean contracts divided by the total of both, shown as a percentage.
Why the change matters more than the level in FII options data
One day’s figure tells you little on its own. What helps more is how it moves over several sessions. If the bullish share rises for a week, FIIs are adding positions that gain from a rise or closing positions that gain from a fall. Either way, the move is a fact about positions and not a forecast.
Comparing FII options data across expiry cycles
Compare today’s reading with the last few expiry cycles. A bullish share that looks low today may be normal for this group over the past months. Context stops you from reading too much into one print. For the futures side of the same report, see our guide to FII futures data.
Index Options vs Stock Options in the Report
The file separates index options from stock options, and it is worth reading them apart. Index options cover whole-market views, for example on Nifty or Bank Nifty. Stock options cover single companies.
Because index options are often used to protect a large cash portfolio, a big put long in index options can sit next to a big long in shares. Stock options are usually closer to a view on one company. Mixing the two into one number hides this difference, so keep them separate when you track the data.
A related measure is the put-call ratio. It compares put activity with call activity for the whole market. FII options data lets you do a similar comparison for one participant group. Use both as context and not as a signal.
Hedging or Directional? Limits of FII Options Data
This is the most common mistake with this report. A put long can be a hedge. Suppose a foreign fund holds a large basket of Indian shares and wants protection against a fall without selling them. It can buy index puts. The puts offset the shares, so the fund is not necessarily expecting a fall.
The reverse also holds. A rise in call long contracts does not always mean confidence. It can be part of a spread, where a trader buys one option and sells another to limit cost. The exchange file shows each leg separately, so a spread can look like a strong one-way bet when it is not.
The report also does not tell you the strike price or the date a contract expires. Two FIIs holding the same number of contracts can have very different risks. Nobody outside the fund can know the reason from this data alone, so treat the numbers as a description of exposure and nothing more.
FII Options Data Around Expiry
Options expire. As a contract nears expiry, traders either close it, let it lapse or roll it into a later series. Open interest therefore falls sharply as old contracts end and rebuilds as new ones open.
A fall in FII put long contracts on expiry day may be contracts ending and not a change of view. Look at the days after expiry, when the new series has built up, before comparing with earlier readings. Expiry days and contract cycles are set by the exchanges and can change, so check the official site for the current schedule.
Also keep the cash market in mind. Daily buying and selling of shares is a different thing from option positions, and the two can point in different directions on the same day. For the cash side, see FII DII data today.
Worked Example: Reading FII Options Data
The numbers below are made up to show the method. They are not real market data.
Suppose on Day 1 the index options rows show FIIs with 90,000 call long, 70,000 call short, 60,000 put long and 80,000 put short contracts. On Day 2, suppose they show 95,000 call long, 68,000 call short, 55,000 put long and 85,000 put short.
- Day 1 net call: 90,000 minus 70,000 = 20,000.
- Day 1 net put: 60,000 minus 80,000 = minus 20,000.
- Day 1 bullish-lean contracts: 90,000 plus 80,000 = 170,000.
- Day 1 bearish-lean contracts: 70,000 plus 60,000 = 130,000.
- Day 1 bullish share: 170,000 divided by 300,000 = 56.7 percent (rounded).
- Day 2 net call: 95,000 minus 68,000 = 27,000.
- Day 2 net put: 55,000 minus 85,000 = minus 30,000.
- Day 2 bullish-lean contracts: 95,000 plus 85,000 = 180,000. Bearish-lean: 68,000 plus 55,000 = 123,000. Total 303,000.
- Day 2 bullish share: 180,000 divided by 303,000 = 59.4 percent (rounded).
What this tells you: in this example, the net call position grew by 7,000 contracts and the net put position became more negative by 10,000. The bullish share moved from 56.7 to 59.4 percent. That describes positions. It does not tell you whether the puts were hedges, and it does not predict the next move.
| Measure | Day 1 | Day 2 | Change |
|---|---|---|---|
| Call long | 90,000 | 95,000 | +5,000 |
| Call short | 70,000 | 68,000 | -2,000 |
| Put long | 60,000 | 55,000 | -5,000 |
| Put short | 80,000 | 85,000 | +5,000 |
| Net call | 20,000 | 27,000 | +7,000 |
| Net put | -20,000 | -30,000 | -10,000 |
| Bullish share | 56.7% | 59.4% | +2.7 points |
Pros and Cons of FII Options Data
| Pros | Cons |
|---|---|
| Free and published by the exchanges | Shows positions, not the reason behind them |
| Separates FII from Client, DII and Pro | A put long may be a hedge, so it is easy to misread |
| Easy to turn into simple measures like net call and bullish share | No strike price or expiry date in the participant file |
| Shows how foreign investors are positioned in calls and puts | End-of-day only, so it lags intraday moves |
| Useful alongside cash market and futures data | Spreads and expiry can distort day-to-day changes |
FAQ
What is FII options data?
FII options data is the count of index and stock option contracts that foreign institutional investors hold as calls and puts, long and short, taken from the exchange’s daily participant-wise open interest report.
Where can I see FII options data?
The NSE and the BSE both publish participant-wise open interest files on their websites after the market closes. The format and publishing time can change, so check the official site.
Does a put long mean FIIs are bearish?
Not necessarily. A put can be a hedge against shares held in the cash market. The report does not say which it is, so avoid reading intent into it.
How do I work out the net call position?
Subtract call short from call long. Using made-up numbers, 90,000 call long and 70,000 call short give a net call position of 20,000.
Is this the same as FII cash market data?
No. Cash data shows the money foreign investors put in or took out of shares on a day. Option data shows contracts they hold at day end, including older positions.
The Bottom Line
FII options data is a free, useful window into how foreign investors are positioned in calls and puts. Read all four rows together, work out net call, net put and the bullish share, compare them over time, keep index and stock options apart, and allow for hedging and expiry effects.
Use the numbers as a description of positions and not as a signal. Your next step is simple: open the latest participant-wise file, copy the four FII option rows into a notebook, and repeat the net call and net put calculation for a week. More explainers are on our blog.
Sources: NSE derivatives reports; BSE participant-wise trading volume and open interest; SEBI website.
Disclaimer: This article is for education only and is not investment, tax or legal advice. It does not recommend buying or selling any security. Examples use made-up numbers. Rules, report formats and timings can change, so check the official sites before you act.
