India is the world's largest derivatives market by number of contracts traded — not USA, not Europe. India. Every day, hundreds of millions of option contracts change hands on NSE alone. And most of the retail participants who trade those contracts lose money. SEBI has studied this repeatedly and keeps publishing the numbers: 9 out of 10 retail F&O traders lose money.

That's not a warning to avoid reading this guide — it's context. If you understand what F&O is, how it works, and where the edge actually comes from, you're already ahead of 80% of people who jump in based on YouTube tips. This guide explains F&O from first principles, with India-specific examples and the actual SEBI data on retail losses.

What Does F&O Stand For?

F&O stands for Futures and Options. These are two types of derivatives — financial contracts whose value is derived from an underlying asset. In India, the underlying assets for most F&O trading are:

• Equity indices: Nifty 50 (most traded), Bank Nifty, Nifty Midcap Select, Sensex
• Individual stocks: About 200 SEBI-approved stocks (Reliance, HDFC Bank, TCS, Infosys etc.)
• Commodities: Gold, crude oil, copper, agricultural commodities (traded on MCX, not NSE)
• Currency: USD/INR, EUR/INR pairs (on NSE/BSE currency segment)

This guide focuses on equity F&O on NSE, which is where the majority of Indian retail F&O trading happens.

What are Futures?

A futures contract is an agreement to buy or sell an asset at a specific price on a specific future date. In India, equity futures have monthly expiry — typically the last Thursday of each month.

Example: It's August 1, 2026. Nifty 50 is trading at 24,000. You buy 1 lot of Nifty August futures at 24,050 (futures typically trade at a slight premium to spot due to carry cost).

If Nifty goes to 24,500 by August expiry (last Thursday), you make: 24,500 − 24,050 = 450 points × 25 (lot size) = ₹11,250 profit. If Nifty falls to 23,500, you lose: 24,050 − 23,500 = 550 points × 25 = ₹13,750.

Key characteristics of futures:

• Both parties are obligated — if you buy futures, you must either square off before expiry or settle at expiry
• Leverage is built in — you pay only margin (typically 10–20% of contract value), not full value
• Daily mark-to-market (MTM) settlement — profits and losses are credited/debited daily, not at expiry
• No time decay — unlike options, futures don't lose value just because time passes

What are Options?

An option gives you the right, but not the obligation, to buy or sell an asset at a specific price (the "strike price") before or on a specific date (expiry). You pay a premium for this right.

There are two types:

Call Options (CE)

A call option gives you the right to buy the underlying at the strike price. You buy calls when you expect the underlying to go up.

Example: Nifty is at 24,000. You buy a Nifty 24,200 Call option expiring this Thursday for ₹80 premium (per unit). Each Nifty lot is 25 units, so you pay ₹80 × 25 = ₹2,000 total.

• If Nifty reaches 24,500 by expiry: your call is worth at least ₹300 (24,500 − 24,200). Profit = (300 − 80) × 25 = ₹5,500.
• If Nifty stays at 24,000 or falls: your call expires worthless. Loss = ₹2,000 (the premium paid). That's your maximum loss.

Put Options (PE)

A put option gives you the right to sell the underlying at the strike price. You buy puts when you expect the underlying to fall.

Example: Nifty at 24,000. You buy a 23,800 Put for ₹70 premium. Total cost: ₹70 × 25 = ₹1,750.

• If Nifty crashes to 23,400 by expiry: put is worth ₹400 (23,800 − 23,400). Profit = (400 − 70) × 25 = ₹8,250.
• If Nifty holds above 23,800: put expires worthless. Max loss = ₹1,750 premium.

Lot Sizes in NSE — What You Actually Need to Know

You can't buy a single Nifty 50 future or option contract — you must trade in "lots." SEBI sets lot sizes based on contract value minimums. Current Nifty 50 lot size: 25 units per lot. With Nifty at 24,000, each lot has a notional value of ₹6 lakh (24,000 × 25).

Common lot sizes as of 2026:

Underlying	Lot Size	Approx. Contract Value
Nifty 50	25	~₹6 lakh
Bank Nifty	15	~₹7.5 lakh
Nifty Midcap Select	50	~₹5.5 lakh
Sensex (BSE)	10	~₹8 lakh
Reliance (stock F&O)	250	~₹60 lakh
Infosys (stock F&O)	400	~₹60 lakh

SEBI revised lot sizes in late 2024 specifically to increase the minimum contract value, making F&O slightly less accessible to very small retail traders. This was part of a broader regulatory tightening effort.

SEBI Data: The Reality of Retail F&O Trading

SEBI has published three detailed studies on retail F&O participation. The numbers are sobering:

• FY2021-22 study: 9 out of 10 retail individual traders (91%) who traded F&O made losses. Average loss per trader: ₹50,000.
• FY2022-23 study: 93% of retail F&O traders lost money. The aggregate retail loss crossed ₹51,000 crore in a single year. The ₹51,000 crore made by the market went to algorithmic traders, foreign institutions, and brokers (via transaction charges).
• FY2023-24: Despite this data being public, retail F&O participation continued growing. More than 1.1 crore individual traders participated in F&O in FY24.

The biggest group of losers are not completely uninformed — many are people who've traded for 1–3 years, have watched tutorials, and still don't account for the structural disadvantages: bid-ask spreads, transaction taxes (STT, GST on premium), time decay eating option premiums, and the information asymmetry between retail and institutional players.

SEBI 2024–2026 Rule Changes for F&O

SEBI made significant regulatory changes to curb speculative retail F&O trading:

• October 2024: Weekly expiry options restricted. Only Nifty 50 and Sensex can have weekly expiry contracts. Bank Nifty weekly expiry discontinued. This killed the extremely high-volume weekly Bank Nifty options market that had become India's most traded instrument.
• Increased lot sizes: As above, contract value floors raised to ensure retail participants have skin in the game at a meaningful level.
• Higher margin requirements: Option selling (writing) now requires higher SPAN + Exposure margins, reducing leverage for option sellers.
• No same-day expiry position: Positions in expiring contracts must be squared off by specific times, preventing last-minute gambling behaviour.
• Upfront premium collection: Option buyers now have to pay full premium upfront (this was already the case, but enforcement tightened).

The collective effect: F&O volumes dropped 30–40% in Q1 2025 compared to their 2024 peaks. Several trading-focused brokers saw revenue fall significantly. Zerodha's own leadership publicly supported these SEBI measures.

Who Should NOT Trade F&O

This is where most guides shy away. But it's the most important section:

• Anyone who can't afford to lose 100% of what they deploy — Options expire worthless regularly. If losing ₹50,000 in a week would hurt your life, you shouldn't be buying options.
• People trading on borrowed money — F&O on margin is already leverage. Adding a personal loan on top is how people end up in serious trouble.
• Anyone without an established equity portfolio — F&O should not be your first step into markets. Start with equity, index funds, understand how markets move, then consider derivatives years later.
• People who haven't studied options pricing (Black-Scholes at minimum) — If you don't understand why an option loses value as expiry approaches (theta decay), you're at a fundamental informational disadvantage.
• Anyone trading based on WhatsApp tips, YouTube calls, or Telegram signals — The people sharing "sure shot" F&O tips are almost always selling brokerage, subscriptions, or advertising. The edge from such signals is zero to negative.

Who Can Actually Benefit From F&O

• Long-term investors hedging equity portfolios — Buying Nifty puts as portfolio insurance during uncertainty. This is legitimate and used by institutional investors routinely.
• Option sellers with large capital and risk management systems — Selling far out-of-the-money options (premium collection strategy) can generate consistent income, but requires significant capital (₹5–10 lakh minimum for meaningful positions) and strict risk management.
• Professional traders with edge from data, speed, or information — Algorithmic traders, market makers, institutional arbitrageurs. These are not retail individuals at home.
• Business owners hedging currency or commodity exposure — An exporter hedging USD/INR exposure via currency futures. This is F&O used for its actual intended purpose: risk reduction.

Key F&O Terminology Quick Reference

• Strike Price: The price at which the option gives you the right to buy/sell
• Premium: The price you pay to buy an option
• Expiry: The date the contract expires. Monthly = last Thursday. Weekly = specific Thursdays (only Nifty and Sensex as of 2025)
• ITM (In the Money): Option has intrinsic value. Call is ITM when underlying > strike. Put is ITM when underlying < strike.
• OTM (Out of the Money): Option has no intrinsic value yet. CE at 25,000 when Nifty is at 24,000 is OTM.
• ATM (At the Money): Strike is close to current price
• Theta: Time decay — an option loses value every day just from time passing, even if price doesn't move
• Delta: How much the option price moves for every 1-point move in the underlying
• Open Interest: Number of outstanding contracts. High OI at a strike = key support/resistance level

If you're looking to explore more advanced strategies, read our options trading strategies guide. For intraday approaches, see our intraday trading tips. And if systematic trading interests you, our algo trading India setup guide covers how to build rules-based systems.