F&O shows up everywhere — in market commentary, in SEBI circulars about retail losses, in every “how I made 10x” screenshot on social media. Very few of those posts explain what a futures or options contract actually is. Here's the plain-English version, including why regulators keep warning people about it.
F&O stands for Futures & Options — two types of derivative contracts whose value is derived from an underlying asset (a stock, an index like Nifty or Bank Nifty, a commodity, or a currency pair). You're not buying the underlying share; you're buying a contract that pays out based on where its price moves.
A futures contract is an agreement to buy or sell a fixed quantity of the underlying at a fixed price on a specific future date. Both the buyer and the seller are obligated to honour it — there's no opting out at expiry. If Nifty futures are trading at 25,000 and you buy one lot, you profit if Nifty rises above 25,000 by expiry and lose if it falls below, regardless of how far it moves either way.
An options contract gives the buyer the right, but not the obligation, to buy (a call) or sell (a put) the underlying at a fixed price (the strike price) on or before expiry, in exchange for paying a non-refundable fee called the premium. The seller (writer) of the option collects that premium up front but takes on the obligation if the buyer chooses to exercise.
| Role | Pays / Receives premium | Obligation | Max loss |
|---|---|---|---|
| Option buyer | Pays | None — can let it expire worthless | Premium paid |
| Option seller (writer) | Receives | Must honour if exercised | Theoretically unlimited (calls) / large (puts) |
This asymmetry is exactly why option buying and option selling are treated as almost different games: a buyer risks a known, limited amount for a shot at a large gain, while a seller collects a small, steady premium but carries open-ended risk if the market moves sharply against the position.
F&O contracts trade in fixed lot sizes set by the exchange — you can't buy "10 shares" of a Nifty future, only whole lots, and lot sizes are revised periodically by NSE/BSE. Because one lot represents a much larger notional value than the margin you actually put up, F&O is inherently leveraged: a 1% move in the underlying can move your margin balance by a much larger percentage. That leverage is the entire appeal of F&O and the entire reason it's dangerous for undercapitalised accounts.
SEBI's own studies on India's equity derivatives segment have repeatedly found that the large majority of individual traders end up with net losses over a given year. The recurring reasons are consistent across studies:
SEBI has introduced multiple rounds of measures over the past few years aimed at retail F&O activity, including changes to weekly expiries and lot sizes, specifically because of how consistently retail traders have shown net losses in this segment.
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EXPLORE MENTORSHIP →A futures contract obligates both the buyer and seller to transact at a fixed price on a set future date. An options contract gives the buyer the right, but not the obligation, to transact at a fixed price before expiry, in exchange for paying a premium — the option seller (writer) takes on the obligation if the buyer exercises it.
SEBI studies on India's derivatives segment have found that the large majority of individual F&O traders end up with net losses over a given year, largely because of leverage magnifying small moves against the trader, time decay eroding option premiums, and undercapitalised accounts unable to absorb drawdowns.
Lot size is the fixed minimum quantity of the underlying that one futures or options contract represents — you cannot trade fewer shares than one lot. Exchanges set and periodically revise lot sizes for each stock and index, and they can only be traded in multiples of that number.
You don't need a separate demat account, but your broker will require you to activate F&O (derivatives) trading on your existing trading account, which usually involves an income or net-worth declaration and an added risk disclosure acknowledgement, per exchange and SEBI requirements.
Educational information only, not investment or trading advice. F&O trading involves substantial risk of loss and is not suitable for every investor; SEBI-mandated risk disclosures apply to all derivatives trading in India.
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