What is F&O Trading? Futures and Options Explained

What Does F&O Mean? (Meaning & Definition)

Futures & Options

F&O simply stands for Futures and Options, the two main types of contracts traded in what is called the derivatives market. Before going further, it helps to understand why they are called derivatives in the first place, because that one word explains almost everything about how F&O differs from buying a stock.

Why it is called a derivative

Think about orange juice for a moment. Orange juice is not the orange. It is a separate product. But its price, its quality, and its very existence are entirely tied to oranges. If a bumper harvest floods the market with oranges, juice gets cheaper. If a bad season shrinks the supply, juice prices climb. The juice's value is derived from the orange's value, even though what you are buying is a bottle of juice, not a crate of oranges.

A derivative works exactly the same way. It is a financial contract whose value is derived from something else, called the underlying asset. The underlying could be a stock like Reliance or Infosys, a market index like Nifty 50 or Sensex, a commodity like gold, or a currency. When you trade a derivative, you are not buying or selling the underlying asset itself. You are trading a contract whose value moves because the underlying's value moves. That is the single most important idea in this entire chapter. Everything else builds on it.

The two instruments in one phrase

Futures and options are both derivatives, but they work in very different ways. Here is the shortest possible version of the difference, before the full explanation ahead: a futures contract is a deal that both sides must honour. An options contract gives one side a right they can use, or simply let go. Hold on to that one sentence. Once you have read how each one actually works, it will make complete sense, and you will see why this single difference changes everything about how risk works in each instrument.

How Do Futures Work?

The obligation to buy or sell

Picture a wheat farmer in June. He agrees today with a flour mill to sell 100 kg of wheat in September, at a fixed price of ₹25 per kg. Both sides sign this agreement now, months before the wheat is actually delivered.

Come September, one of two things has happened to wheat's market price. 

• Maybe it climbed to ₹30 per kg. The mill got a great deal, buying at ₹25 when the market wanted ₹30. 
• Maybe it fell to ₹20 per kg. Now the farmer got the better end, selling at ₹25 when the market only offered ₹20.

Here is the part that matters. Neither side gets to change their mind in September. The farmer must sell at ₹25. The mill must buy at ₹25. That was the entire point of agreeing in June: certainty for both sides, regardless of which way the market moved later.

A futures contract in the stock market works on exactly this principle. It is an agreement between two parties to buy or sell a specific quantity of an underlying asset, at a specific price, on a specific future date. Both parties are locked in. There is no walking away, and this is precisely what makes futures different from an option, which you will see shortly.

Nifty futures example

Now replace wheat with the Nifty 50 index. Say Nifty is trading around 24,000 today. If you believe that the Nifty will rise over the next few weeks, you can buy a Nifty futures contract at this price.

• If Nifty rises to 24,300 by the time your contract settles, your position gains, because you locked in a lower buying price than where the market ended up. 
• If Nifty instead falls to 23,700, your position loses, by exactly the same logic, since you are obligated to that 24,000 price no matter what actually happens.

Unlike a stock, which you can hold indefinitely, a futures contract does not let you simply wait out a bad move. It settles on a fixed date. That is the trade-off futures offer: certainty about your price in advance, in exchange for giving up the ability to change your mind later, in either direction.

Lot size and contract value

You cannot buy "one unit" of Nifty futures the way you might buy one share of a stock. F&O trades in a fixed minimum quantity called a lot, similar to how a restaurant selling biryani by the half kilogram will not sell you 200 grams. You order in full portions, not fractions. In F&O, you buy or sell in whole lots: one lot, two lots, five lots, never a partial lot.

As of now, one lot of Nifty 50 futures represents 65 units of the index. NSE sets this number and revises it periodically as the index level moves, aiming to keep the total value of one lot roughly between ₹15 lakh and ₹20 lakh. Lot size, along with the rest of the vocabulary you will encounter on a real trading screen, is covered in full in the f&o key terms chapter in this module.

Here is what that means in rupees. If Nifty is at 24,000 and the lot size is 65, the total contract value, also called notional value, of one lot works out to 24,000 × 65 = ₹15,60,000. 

That is the exposure you take on with a single lot, even though the amount you actually put down as margin, a kind of security deposit held by the exchange, is much smaller than that, typically somewhere around one tenth of the notional value, though this is set by the exchange and can rise sharply when markets get volatile.

Now go back to the earlier example. Nifty moved from 24,000 to 24,300, a rise of 300 points. 

On one lot of 65 units, that is not just "300 points." It is 300 × 65 = ₹19,500 in actual gain. Had the market fallen 300 points instead, that same ₹19,500 would have been your loss. This is the number that matters to you as a trader: not the index points on a screen, but what those points are worth in your account, in rupees, on the full lot you are holding.

Here is roughly how this order would look on a trading screen:

Notice that the price field is the index level, not a rupee amount per share. That single field, multiplied by the lot size, is what determines the size of your entire position.

Futures are not only used by traders looking to profit from price moves. A mutual fund holding a large basket of Nifty stocks might sell Nifty futures to protect its portfolio against a short-term fall, much like taking insurance on a car you hope you never need to claim. This use of futures for protection is called hedging. 

A smaller set of participants, called arbitrageurs, profit from tiny price gaps between the futures market and the actual cash market, and in doing so keep the two markets closely aligned. Most individual retail traders, though, use futures for a third reason: to take a view on where the market is headed. This is called speculation, and if you are trading F&O for the first time, this is almost certainly the category you fall into.

How Do Options Work?

The right without obligation

Futures locked both sides into an obligation. Options work differently, and this difference is the single most important thing to understand in this chapter.

Picture booking a flat priced at ₹50 lakh, but you are not ready to commit today. The builder offers you a deal: pay ₹1 lakh now as a booking amount, and you get the right to buy the flat at ₹50 lakh anytime in the next six months. You are not obligated to buy it. You have paid for a choice.

Six months later, say prices in that area have risen to ₹65 lakh. You exercise your right, buying at ₹50 lakh what the market now values at ₹65 lakh. A clear win, and your only cost was the ₹1 lakh booking amount. Now say prices had fallen instead, to ₹40 lakh. You simply walk away. You do not buy an overpriced flat, and your only loss is the ₹1 lakh you already paid. Nothing further is owed.

That ₹1 lakh is what options trading calls the premium, the price you pay upfront for the right to decide later. A futures buyer and seller are both obligated to complete their deal. An options buyer has a right, not an obligation, and their maximum possible loss is capped at the premium they paid.

Call option: bet on rise

An option that gives you the right to buy the underlying at a fixed price is called a call option. You buy a call when you expect the price to rise, exactly like the flat booking that gave you the right to buy at ₹50 lakh, hoping the price would climb.

Say you buy one Nifty 24,000 call option today, paying a premium of ₹150 per unit. If Nifty rises well above 24,000 by expiry, your option gains value, because the right to buy at 24,000 becomes more valuable as the market climbs higher. If Nifty stays below 24,000 or falls, your option loses value and can expire worthless, at which point your loss is limited to the ₹150 per unit premium you paid, never more.

Put option: bet on fall

A put option works the mirror opposite way. It gives you the right to sell the underlying at a fixed price, and you buy a put when you expect the price to fall.

Think of it as insurance on a falling market. Say you buy a Nifty 24,000 put option, paying a premium of ₹120 per unit.

• If Nifty falls to 23,500, your right to sell at 24,000, well above the market, becomes valuable.
• If Nifty rises instead, that same right is worth less and less, since no one wants to sell at below the market price, and the option can expire worthless, again capping your loss at the premium paid.

One distinction matters before you go further. Nifty and other index options are cash settled: any profit or loss is simply credited or debited to your account, with no shares involved. Stock options work differently. 

Since October 2019, in the money stock options that are not closed before expiry result in actual delivery of shares, meaning you could find yourself suddenly owning, or having sold, real shares you had not planned to hold, along with the funding or delivery obligation that comes with it. This is a common trap for beginners who assume every option settles in cash the way index options do.

Here is roughly what a small slice of the Nifty option chain looks like on a trading screen, using the numbers above:

[Illustrative premiums only, actual premiums move constantly with the market]

Notice the pattern. As the strike price rises, call premiums fall and put premiums rise. A call at a higher strike is a right to buy at a less attractive price, so it costs less. A put at a higher strike is a right to sell at a more attractive price, so it costs more. 

You will see CE next to call options and PE next to put options on most Indian trading platforms, short for Call European and Put European, since NSE's index options can only be exercised at expiry, not before.

One more distinction trips up almost every beginner: margin and premium are not the same thing, even though both involve paying money upfront.

Everything explained here has been from the option buyer's side, since that is where risk is capped and simplest to understand. It is worth knowing, even at this early stage, that someone is on the other side of every options trade, the seller, who receives your premium but takes on an obligation closer to a futures position, with risk that is not capped the same way. Selling options is a different strategy with a different risk profile, covered properly in the risk management module of this Learn section rather than here.

F&O vs Buying Stocks: Key Differences

Ownership (Stocks) vs Exposure (F&O)

When you buy a share of Reliance or Infosys, you own a small piece of that company. You are a shareholder, and you can hold that share for one day or twenty years, with nothing forcing you to sell.

When you buy Nifty futures or a Nifty call option, you own nothing. You hold a contract that gives you exposure to the index's price movement, a position on direction, without any ownership of the underlying stocks. 

This is not a lesser form of investing. It simply serves a different purpose: F&O exists to let you take a view on price movement, hedge an existing position, or gain leveraged exposure, not to build long term ownership in a company.

Expiry dates: stocks don't expire

A share of stock never expires. You can buy it and hold it, waiting out any bad years, for as long as you own it.

Every F&O contract has an expiry date built in. Nifty options currently expire weekly, every Tuesday, and monthly, on the last Tuesday of the month. Once that date passes, the contract is done, permanently, regardless of what you think will happen to the market next week. 

This is one of the differences beginners underestimate most: with F&O, you have to be right about direction and right about timing. Being right eventually is not the same as being right before your contract expires.

Leverage: amplified gains and losses

Buying ₹15,000 worth of a stock costs you ₹15,000. There is no other way to do it.

F&O works differently. Recall the earlier futures example, where one lot carried a notional value of roughly ₹15,60,000, yet the margin required to enter that position was only a fraction of that amount. 

This is leverage: controlling a large exposure with a comparatively small amount of capital. Leverage does not make gains or losses bigger in isolation. It makes the same percentage move in the underlying translate into a much larger rupee swing on your capital, because your capital is smaller relative to your exposure than it would be if you had simply bought the stock outright. A 2% move in Nifty, about 480 points at current levels [VERIFY BEFORE PUBLISHING], works out to roughly ₹31,200 on one lot's notional value, not a small number, even though the index itself moved only 2%.

These three differences, ownership versus exposure, expiry, and leverage, are the ones that matter most while you are still getting oriented. A full side by side comparison, including costs, taxation, and settlement mechanics, is covered in F&O vs cash market chapter in this Learn section.

Where Are F&O Contracts Traded in India?

NSE: Nifty, Bank Nifty, stock F&O

Nearly all F&O volume in India happens on the National Stock Exchange, or NSE. NSE offers futures and options on the Nifty 50 index, the most actively traded contract in the country and the one used throughout this chapter. It also offers Bank Nifty contracts, currently monthly only rather than weekly, since NSE discontinued Bank Nifty's weekly expiry in November 2024, and F&O on individual stocks, though only a defined list of exchange approved, liquid stocks is available, not every listed company. 

To place any of these trades, you need a broker like INDmoney with your F&O segment activated, and you place orders in lots, not individual shares, exactly as shown earlier.

BSE: Sensex and Bankex options

The Bombay Stock Exchange, or BSE, also offers F&O contracts, mainly on the Sensex, which currently has weekly expiry on Thursdays. BSE's F&O volumes are considerably smaller than NSE's, so as a beginner, NSE, and specifically Nifty 50, is where you are likely to start and where the deepest liquidity exists.

For years, NSE has ranked among the largest derivatives exchanges in the world by number of contracts traded. Brazil's B3 exchange overtook NSE for the top spot for part of 2025, though NSE remains one of the largest and most active derivatives markets globally. Either way, F&O is not a small or fringe part of the Indian market. It is a central part of how retail and institutional money interacts with Indian stocks and indices every single day.

Is F&O Right for You?

Capital and risk appetite check

F&O is not simply a smaller budget version of stock investing. Even though the margin for one lot is less than the full notional value, it is still a meaningful sum, and every rupee of it can be lost, along with more, if a position moves against you and goes unmanaged. Before you commit real money, ask yourself three honest questions:

• Do you have capital you could see reduced significantly without it affecting your monthly life?
• Do you have time to actually monitor a position during market hours, since F&O can move fast within a single day?
• Are you trading with a clear, specific plan, or mainly because you have heard about it and want to try?

Who should avoid F&O

Before you place your first F&O trade, look at SEBI's own research. Its most recent study found that over 91% of individual traders in India's equity derivatives segment made net losses in the 2024-25 financial year, with net losses rising to roughly ₹1,05,603 crore that year, up about 41% from the year before. 

This is not a reason to avoid F&O altogether, and it is not a judgment on anyone who trades it. It is simply the honest starting context: most people who enter this market without adequate preparation lose money, and the ones who do well tend to be the ones who took the time to genuinely understand what they were doing before they started.

If you have never traded before, if you do not yet follow the terms used throughout this chapter without having to re-read them, or if you are looking at F&O as a way to recover losses from somewhere else or make up for a shortfall in income, this is not the moment to start. Learning first, on paper or with amounts small enough that a mistake teaches you rather than costs you seriously, is not overcaution. It is how the minority who succeed at this generally begin.

Limitations of F&O Trading

Beyond who should or should not start, F&O carries a few structural limitations worth understanding on their own terms, separate from your personal risk appetite.

Time works against option buyers. An option loses value simply from the passage of time, even if the underlying does not move at all, a decay that accelerates sharply as expiry approaches. This means you can be entirely right about the direction of a stock or index and still lose money, if the move takes longer to happen than your contract's expiry allows. This mechanic, called time decay, is explored in full in the Option Greeks module of this Learn section.

Losses in futures are not capped at your margin. Because futures are marked to market, meaning your account is adjusted for gains and losses at the end of every trading day rather than only when you close the position, a sustained adverse move can require you to add more money to keep the position open, beyond what you initially put in. This is fundamentally different from buying a stock, where your maximum possible loss is the amount you invested and nothing more.

F&O also demands ongoing attention in a way long term stock investing does not. A mutual fund or a blue chip stock can be checked once a month and left alone. An F&O position, because of its expiry date and its sensitivity to daily price swings, generally cannot be treated the same way.

Conclusion

You now know what F&O actually means, how a futures contract locks both sides into an obligation, how an options contract gives the buyer a right instead, and how both are fundamentally different from simply owning a stock. That is the real foundation this entire subject is built on.

The next step is building your vocabulary further: the lot sizes, strike prices, premiums, and margin terms you will actually see on your trading screen once you go looking for your first contract. That is exactly what the next chapter in this Learn module covers, term by term, with the same grounded, practical approach you have just read.