Options trading involves buying or selling options contracts whose value is linked to an underlying asset such as a stock or market index.
An option gives the buyer a right, while the seller takes on a corresponding obligation, according to the terms of the contract.
The two basic types of options are:
Call Option → Right to Buy
Put Option → Right to Sell
Options also involve concepts such as:
- Strike price
- Premium
- Expiry
- Lot size
- Intrinsic value
- Time value
- Implied volatility
- Option Greeks
Unlike buying a share directly, an option has a defined contract structure and an expiration date.
Options can be used for:
- Hedging
- Directional trading
- Defined-risk strategies
- Volatility strategies
But they can also involve substantial risk because of leverage, time decay, volatility changes, liquidity and the obligations created by short-option positions.
Options framework last reviewed: September 14, 2026
Educational Disclaimer: This article is for general educational and informational purposes only. It does not constitute investment, financial, research or trading advice. Options and other derivatives can involve substantial risk and may result in significant losses.
Quick Answer: What Is Options Trading?
Options trading means buying or selling contracts that derive their value from an underlying asset.
An option contract normally specifies:
- Underlying asset
- Strike price
- Expiry date
- Option type
- Lot size
The buyer pays a premium for the option.
A call buyer generally benefits when the underlying rises sufficiently.
A put buyer generally benefits when the underlying falls sufficiently.
However, direction alone is not enough.
An option’s value can also change because of:
- Time remaining
- Implied volatility
- Interest rates
- Market expectations
That is why options are more complex than simply buying a stock.
What Is an Option?
An option is a derivative contract.
Its value is derived from another financial instrument called the:
Underlying
The underlying may be:
- A stock
- A stock index
- Another eligible financial instrument
The contract gives the buyer a specific right while creating an obligation for the seller.
The buyer pays a premium to obtain that right.
Option Buyer vs Option Seller
This distinction is fundamental.
| Position | Basic Right / Obligation | Initial Cash Flow | Basic Risk Characteristic |
|---|---|---|---|
| Call Buyer | Right to buy | Pays premium | Can lose the premium paid |
| Put Buyer | Right to sell | Pays premium | Can lose the premium paid |
| Call Seller | Takes obligation under contract | Receives premium | Can face substantial loss |
| Put Seller | Takes obligation under contract | Receives premium | Can face substantial loss |
Receiving premium does not mean the seller has permanently earned that amount.
The position remains exposed until it is:
- Closed
- Expired
- Exercised or settled according to the contract
What Is a Call Option?
A call option gives the buyer the right, but not the obligation, to buy the underlying at the specified strike price according to the contract terms.
A call buyer generally has a bullish view.
Simple Call Option Example
Suppose:
Underlying price:
₹1,000
Call strike price:
₹1,020
Premium:
₹25
At expiry, suppose the underlying closes at:
₹1,080
Call intrinsic value:
₹1,080 − ₹1,020 = ₹60
The buyer originally paid:
₹25
So the simplified profit before transaction costs is:
₹60 − ₹25 = ₹35 per unit
Call Breakeven at Expiry
For a simple long call:
Breakeven = Strike Price + Premium Paid
So:
₹1,020 + ₹25 = ₹1,045
Above ₹1,045 at expiry, the simplified long-call position begins to show profit before costs.
What Is a Put Option?
A put option gives the buyer the right, but not the obligation, to sell the underlying at the specified strike price according to the contract terms.
A put buyer generally has a bearish view or may use the option for hedging.
Simple Put Option Example
Suppose:
Underlying price:
₹1,000
Put strike price:
₹980
Premium:
₹20
At expiry, suppose the underlying falls to:
₹900
Put intrinsic value:
₹980 − ₹900 = ₹80
Premium paid:
₹20
Simplified profit before charges:
₹80 − ₹20 = ₹60 per unit
Put Breakeven at Expiry
For a simple long put:
Breakeven = Strike Price − Premium Paid
So:
₹980 − ₹20 = ₹960
Below ₹960 at expiry, the simplified long-put position begins to show profit before costs.
Call vs Put Options
| Feature | Call Option | Put Option |
|---|---|---|
| Buyer receives | Right to buy | Right to sell |
| Buyer view | Generally bullish | Generally bearish / hedging |
| Buyer pays | Premium | Premium |
| Buyer may benefit from | Sufficient rise in underlying | Sufficient fall in underlying |
| Maximum loss for standalone buyer | Generally premium paid plus costs | Generally premium paid plus costs |
These descriptions apply to a long standalone option.
Selling calls or puts creates a different payoff structure.
What Is the Strike Price?
The strike price is the price specified in the options contract.
Example:
Underlying:
₹1,000
Available strikes may include values such as:
- ₹950
- ₹980
- ₹1,000
- ₹1,020
- ₹1,050
The relationship between:
Underlying Price ↔ Strike Price
helps determine whether the option is:
- ITM
- ATM
- OTM
What Is an Options Premium?
The premium is the market price of an option contract.
The buyer pays the premium.
The seller initially receives the premium.
A simplified framework is:
Option Premium = Intrinsic Value + Time Value
Before expiry, an option can have:
- Intrinsic value
- Time value
- Both
At expiry, remaining time value falls to zero.
Intrinsic Value vs Option Price
This distinction is very important.
Suppose a call has:
Strike:
₹1,000
Underlying:
₹1,050
Its intrinsic value is:
₹50
But before expiry, the option itself may trade above ₹50 because it can still contain time value.
Therefore:
Intrinsic Value ≠ Always Current Option Premium
What Is Intrinsic Value?
Intrinsic value is the amount by which an option is currently in the money.
Call
Intrinsic Value = Max(Spot − Strike, 0)
Put
Intrinsic Value = Max(Strike − Spot, 0)
Intrinsic value cannot be negative.
If the formula gives a negative number, intrinsic value is treated as zero.
What Is Time Value?
Time value is the portion of an option premium beyond its intrinsic value.
It reflects factors such as:
- Time remaining before expiry
- Expected future movement
- Implied volatility
For example:
Option premium:
₹70
Intrinsic value:
₹50
Simplified time value:
₹20
As expiry approaches, this time value generally tends to decline, all else equal.
What Is Expiry in Options?
Options contracts have defined expiration dates.
After the applicable expiry and settlement process, the contract no longer continues indefinitely like an ordinary shareholding.
Expiry matters because:
Time Remaining ↓ → Time Value Can Decline
An options trader can therefore be directionally correct and still lose money if:
- The move happens too late
- The move is too small
- Volatility falls sharply
- Premium paid was too high
What Are ITM, ATM and OTM Options?
Options are commonly classified according to their relationship with the underlying.
In-the-Money — ITM
A call is ITM when:
Underlying Price > Strike Price
A put is ITM when:
Underlying Price < Strike Price
ITM options have intrinsic value.
At-the-Money — ATM
An option is approximately ATM when the underlying price is close to the strike price.
Out-of-the-Money — OTM
A call is OTM when:
Underlying Price < Strike Price
A put is OTM when:
Underlying Price > Strike Price
OTM options do not have intrinsic value.
They can still have time value before expiry.
Why Cheap OTM Options Are Not Automatically Cheap
A beginner may see:
₹5 premium
and think:
“It is cheap, so the risk is low.”
But a low premium can reflect a low probability of finishing profitably before expiry.
The option may expire worthless.
Therefore:
Low Premium ≠ Undervalued Option
and:
Low Rupee Cost ≠ High Probability Trade
What Is Time Decay?
Time decay refers to the reduction in option value associated with the passage of time, all else equal.
It is commonly associated with:
Theta
For an option buyer, time works against the position when the required market movement does not occur quickly enough.
Suppose a trader buys a call expecting a rally.
The stock remains unchanged for several days.
Even though the stock did not fall, the option premium may decline because less time remains before expiry.
This demonstrates:
Direction alone is not enough in options trading.
What Is Implied Volatility?
Implied volatility, or IV, reflects the volatility expectations embedded in option prices.
All else equal:
Higher IV → Higher Option Premium
Lower IV → Lower Option Premium
This means an option buyer can correctly predict direction but still receive a weaker-than-expected result if implied volatility falls substantially.
Example: Why Direction Alone Is Not Enough
Suppose a trader buys a call before an important event.
The trader expects:
Stock Price ↑
The stock does rise after the event.
But implied volatility falls sharply because the uncertainty surrounding the event disappears.
The option’s gain may therefore be smaller than expected.
This is sometimes referred to informally as:
volatility crush
The key lesson is:
Underlying Direction + Time + Volatility
all matter.
What Are Options Greeks?
Options Greeks help describe how option prices may respond to different variables.
Delta
Measures sensitivity to changes in the underlying price under the pricing model.
Gamma
Measures how Delta changes as the underlying price changes.
Theta
Measures sensitivity to the passage of time.
Vega
Measures sensitivity to implied volatility.
Rho
Measures sensitivity to interest-rate changes.
Beginners do not need to memorise every mathematical formula immediately.
They should first understand what each Greek is trying to measure.
How Options Work in the Indian Market
Exchange-traded equity options in India follow defined contract specifications.
A contract can specify:
- Underlying
- Strike price
- Expiry
- Call or put
- Lot size
Lot sizes and contract specifications are determined by the exchange and can change.
That means beginners should verify current specifications through the relevant exchange rather than relying on an old article or screenshot.
For NSE individual-stock options, current exchange specifications state that the contracts are:
- European style
- Physically settled
Settlement mechanics can differ across products, so always verify the specific contract being traded.
What Is Lot Size?
Options are normally traded in specified contract quantities.
Suppose, purely hypothetically:
Premium:
₹30
Lot size:
500
Premium outlay:
₹30 × 500 = ₹15,000
The actual lot size depends on the contract.
It can change over time.
Always verify the current exchange specification.
Premium Paid Is Not the Same as Notional Exposure
This is important for understanding leverage.
Suppose an option costs only:
₹15,000 in premium
The underlying economic exposure represented by the contract may be much larger.
That is why options can provide leverage.
A relatively small cash outlay can create exposure to a much larger underlying position.
Leverage can magnify:
gains
and:
losses
Options Buying vs Options Selling
Options Buying
A standalone option buyer pays a premium.
For a long vanilla call or put, the maximum contractual loss is generally limited to the premium paid, plus applicable transaction costs.
But the option can:
expire worthless
That means a 100% loss of the premium is possible.
Common Buyer Risks
- Time decay
- Volatility decline
- Incorrect direction
- Insufficient movement
- Poor timing
- Liquidity
- High premium paid
Options Selling
An option seller receives premium and assumes an obligation under the contract.
The premium received should not be treated as guaranteed income.
The position remains exposed.
Short Call Risk
An uncovered short call can theoretically face unlimited loss because the underlying price can continue rising.
Short Put Risk
A short put can also experience substantial losses if the underlying falls sharply.
Seller Risks Include
- Large adverse market movements
- Gap risk
- Margin requirements
- Volatility expansion
- Liquidity
- Assignment or settlement obligations
Are Option Sellers Always More Profitable Than Buyers?
No.
Statements such as:
“Option sellers always win because time decay works for them.”
are misleading.
Option sellers also face:
- Large adverse moves
- Volatility increases
- Gap risk
- Margin pressure
Profitability depends on:
- Strategy
- Entry price
- Risk control
- Position size
- Market conditions
- Execution costs
Why Are Options Risky?
Options can involve several layers of risk simultaneously.
These include:
Leverage
Small capital can control larger economic exposure.
Time Decay
An option can lose value as expiry approaches.
Volatility Risk
Premiums can change because IV changes.
Gap Risk
Markets can move sharply between trading sessions.
Liquidity Risk
Some contracts may have poor trading depth or wide spreads.
Position-Sizing Risk
Too much exposure can turn a manageable loss into a large portfolio loss.
Short-Option Risk
Some short-option positions can generate very large losses.
Important SEBI Risk Context
SEBI reported that 93% of individual traders in equity futures and options incurred losses during FY22–FY24.
This statistic does not mean every options trade loses.
It does show why beginners should focus first on:
- Contract mechanics
- Costs
- Position sizing
- Leverage
- Maximum loss
rather than assuming options are a shortcut to easy income.
What Affects an Option’s Price?
The premium can be influenced by several variables.
A useful framework is:
Underlying Price
Strike Price
Time to Expiry
Implied Volatility
Interest Rates
=
Option Premium Dynamics
You do not need to predict each variable perfectly.
But you should understand that option prices are not determined by direction alone.
Options Trading vs Stock Investing
| Feature | Stock | Option |
|---|---|---|
| Instrument | Ownership interest in company | Derivative contract |
| Expiry | Ordinary shares generally do not expire | Defined expiry |
| Premium | Not applicable in same way | Buyer pays premium |
| Time decay | Not applicable in same way | Important |
| Volatility effect | Affects stock price | Also affects option premium |
| Leverage | Generally lower without borrowing | Can be substantial |
| Complexity | Relatively simpler | Higher |
| Risk | Can lose substantial capital | Depends heavily on position |
Neither stocks nor options are risk-free.
Options vs Futures
Both are derivatives.
But their contract structures differ.
Futures
Both parties generally have obligations under the futures contract.
Options
The buyer has a right but not the corresponding exercise obligation.
The seller takes the contractual obligation.
This difference creates very different payoff profiles.
For a detailed comparison, read Future and Option Trading vs Cash Market.
What Are Options Strategies?
Options can be combined into different payoff structures.
Examples include:
- Long Call
- Long Put
- Protective Put
- Covered Call
- Bull Call Spread
- Bear Put Spread
- Straddle
- Strangle
Each strategy has its own:
- Market assumption
- Maximum risk
- Potential reward
- Volatility exposure
- Time-decay behaviour
The important rule is:
Understand the payoff before placing the trade.
For a dedicated explanation, read Options Trading Strategies for Beginners.
How Should Beginners Learn Options Trading?
This page is designed to explain the contract itself.
A beginner should first understand:
Calls → Puts → Strike → Premium → Expiry → Moneyness → Time Value → IV → Greeks → Risk
before moving into multi-leg strategies.
For the complete learning sequence, read How to Learn Options Trading in India.
Common Beginner Mistakes in Options Trading
1. Buying Options Because the Premium Looks Cheap
Low premium does not mean favourable value.
2. Ignoring Breakeven
Being correct about market direction does not automatically mean the trade is profitable.
3. Ignoring Expiry
Options have limited time.
4. Ignoring Time Decay
Premium can fall even if the underlying barely moves.
5. Ignoring Implied Volatility
A volatility decline can affect premium materially.
6. Ignoring Lot Size
The quoted premium is per unit, not necessarily the total contract outlay.
7. Confusing Premium With Maximum Capital Requirement
Premium paid is not the same as underlying notional exposure.
8. Treating Premium Received as Guaranteed Income
Option sellers remain exposed to losses.
9. Using Excessive Leverage
Leverage can magnify losses rapidly.
10. Trading Without Understanding Maximum Loss
Every strategy should be understood before execution.
What Are the Costs of Options Trading?
The gross payoff shown in an options example is not necessarily the trader’s final net result.
Depending on the transaction, costs can include:
- Brokerage
- Securities Transaction Tax
- Exchange transaction charges
- GST on applicable services
- Stamp duty
- SEBI-related charges
Therefore:
Gross Payoff ≠ Net Profit
For broader tax information, read Tax on Stock Market Profits in India.
How Much Money Is Needed for Options Trading?
There is no universal amount.
Capital requirements depend on:
- Contract
- Lot size
- Premium
- Strategy
- Margin
- Risk limit
- Transaction costs
The wrong question is:
“What is the maximum trade my broker will allow?”
A better question is:
“What loss can my financial position reasonably absorb?”
Are Options Suitable for Beginners?
Options can be learned by beginners.
But beginners should not treat them as simple instruments.
Before using significant real capital, understand:
- Call
- Put
- Premium
- Strike
- Expiry
- Lot size
- ITM / ATM / OTM
- Time decay
- IV
- Greeks
- Breakeven
- Maximum loss
- Settlement
- Margin
If these concepts are unclear, more learning is appropriate before increasing risk.
Frequently Asked Questions
What is options trading in simple words?
Options trading involves buying or selling contracts whose value is linked to an underlying asset.
The buyer receives a contractual right and pays a premium, while the seller accepts the corresponding obligation.
What is a call option?
A call gives the buyer the right to buy the underlying at the specified strike price according to the contract.
What is a put option?
A put gives the buyer the right to sell the underlying at the specified strike price according to the contract.
What is an option premium?
The premium is the market price paid by the option buyer and initially received by the seller.
What is a strike price?
The strike price is the contractual price at which the option’s right can be exercised or settled according to the contract terms.
What is expiry?
Expiry is the date on which the option contract reaches the end of its defined life.
What is lot size?
Lot size is the specified number of units represented by one derivatives contract.
Actual lot sizes vary and can be changed by the exchange.
What does ITM mean?
ITM means in the money.
An ITM option has intrinsic value.
What does ATM mean?
ATM means at the money.
The strike is approximately near the underlying market price.
What does OTM mean?
OTM means out of the money.
An OTM option has no intrinsic value.
What is intrinsic value?
Intrinsic value is the amount by which an option is currently in the money.
What is time value?
Time value is the portion of premium associated with remaining time and uncertainty beyond intrinsic value.
What is time decay?
Time decay describes the loss of option value associated with the passage of time, all else equal.
What is implied volatility?
Implied volatility is the market-implied volatility expectation reflected in option prices.
What are options Greeks?
Greeks are measures used to understand an option’s sensitivity to different pricing variables.
The major Greeks include:
- Delta
- Gamma
- Theta
- Vega
- Rho
Can a call buyer lose money even if the stock rises?
Yes.
The rise may be too small, occur too late or be offset by premium paid, time decay or volatility changes.
Can a put buyer lose money if the stock falls?
Yes.
The fall may not be large enough relative to the premium and other pricing factors.
What is the maximum loss for an option buyer?
For a standalone long vanilla option, the maximum contractual loss is generally the premium paid, plus applicable costs.
Is option selling safe?
No.
Short-option positions can carry substantial risk, and some uncovered strategies can face extremely large losses.
Is options trading risky?
Yes.
Options involve leverage, time decay, volatility risk, liquidity risk, expiry and potentially significant losses.
Can options trading guarantee profit?
No.
No legitimate options strategy guarantees profit.
Are options traded in lot sizes in India?
Yes.
Exchange-traded derivatives use specified lot sizes.
The applicable lot size depends on the contract and can change.
Are stock options physically settled in India?
On NSE, individual-stock options are currently European-style and physically settled.
Investors should always check the current contract specification because settlement mechanics differ across products.
Is buying an option cheaper than buying the stock?
The initial premium may be much lower than purchasing the equivalent quantity of the underlying shares.
But that creates leverage and does not mean the economic risk is necessarily lower.
What should a beginner learn first?
Start with:
Call → Put → Strike → Premium → Expiry → Lot Size → Moneyness → Breakeven → Time Value → IV → Risk
before studying complex strategies.
Key Takeaways
Options trading is built around a contractual relationship between buyer and seller.
Remember:
Call Buyer → Right to Buy
Put Buyer → Right to Sell
Buyer → Pays Premium
Seller → Receives Premium and Takes Obligation
Strike → Contract Price
Expiry → Contract End Date
Premium ≠ Intrinsic Value Only
Low Premium ≠ Cheap Trade
Correct Direction ≠ Guaranteed Profit
Premium Received ≠ Guaranteed Income
Options Leverage ≠ Free Capital
Options Strategy ≠ Guaranteed Profit
The core framework is:
Underlying
↓
Call / Put
↓
Strike
↓
Premium
↓
Expiry
↓
Moneyness
↓
Intrinsic + Time Value
↓
Implied Volatility
↓
Greeks
↓
Breakeven
↓
Risk
Final Thoughts
Understanding options trading starts with understanding the contract—not memorising strategies.
Before asking:
“Which options strategy should I use?”
first understand:
- What right does the buyer have?
- What obligation does the seller have?
- What premium is being paid?
- What is the strike?
- When does the contract expire?
- What is the breakeven?
- How much can be lost?
- How will time and volatility affect the premium?
Options provide flexibility because traders can construct many different payoff structures.
That flexibility also creates additional complexity.
A stronger learning sequence is:
Contract Mechanics → Pricing → Payoff → Risk → Strategies
not:
Strategy Name → Trade Immediately
For a complete beginner roadmap, read How to Learn Options Trading in India.
For beginner strategy education, read Options Trading Strategies for Beginners.
If you prefer structured classroom learning, explore the Options Trading Course in Delhi.
Educational Disclaimer: This article is for general educational and informational purposes only. It does not constitute investment, financial, research, tax or trading advice or a recommendation to buy or sell any security or derivative. Options trading can result in substantial losses. Contract specifications, lot sizes, margin requirements, expiry structures, settlement procedures, costs and regulations can change. Verify current information through the relevant exchange and regulator before trading.
