What Is an Options Contract — Calls and Puts with Indian Examples

What Is an Options Contract?

An options contract gives the BUYER the right (not obligation) to buy or sell an asset at a pre-agreed price (strike) on or before expiry. The SELLER (writer) is obligated to honour if the buyer exercises.

Two Types

• CALL option: Right to BUY at strike. You buy a call when expecting price to RISE.
• PUT option: Right to SELL at strike. You buy a put when expecting price to FALL (or to hedge existing long position).

Key Terms

• Strike price: The price at which option can be exercised
• Premium: The price you pay (buyer) or receive (seller) for the option
• Expiry: Date by which option must be exercised (Indian options are European-style — exercise only at expiry)
• Lot size: Same as futures lot size (Nifty 25, Bank Nifty 15, etc.)
• Spot price: Current market price of the underlying

Concrete Indian Examples

Long Call (Bullish Bet)

Nifty currently at 25,000. You expect Nifty to rise to 25,500 by next Thursday's weekly expiry. You buy 1 lot Nifty 25,500 CE (Call Expiry) at premium ₹50.

• Cost: 25 lots × ₹50 = ₹1,250 + brokerage
• If Nifty closes 25,700 at expiry: Intrinsic value = 200; profit = (200 − 50) × 25 = ₹3,750
• If Nifty closes 25,400 at expiry: Strike not crossed; option expires worthless; loss = ₹1,250 (full premium)
• If Nifty closes 25,200 at expiry: Same — option expires worthless; loss = ₹1,250

Long Put (Bearish Bet or Hedge)

Nifty at 25,000. You expect a fall to 24,500 by Thursday. Buy 1 lot Nifty 24,800 PE at premium ₹60.

• Cost: 25 × ₹60 = ₹1,500
• If Nifty closes 24,500: Intrinsic = 300; profit = (300 − 60) × 25 = ₹6,000
• If Nifty closes 24,800: Strike just reached; profit = (0 − 60) × 25 = −₹1,500 (full premium loss)
• If Nifty closes 25,200: Strike not crossed; loss = ₹1,500

Short Call (Bearish Bet — Sell Premium)

You expect Nifty to NOT rise above 25,500. Sell 1 lot Nifty 25,500 CE at premium ₹50, collect ₹1,250.

• If Nifty closes ≤ 25,500: Option expires worthless; you keep full ₹1,250 premium
• If Nifty closes 25,700: You lose ₹150 × 25 = ₹3,750. Net = ₹3,750 − ₹1,250 = −₹2,500
• If Nifty closes 26,500 (huge spike): Loss = (1000 − 50) × 25 = ₹23,750. UNLIMITED LOSS POTENTIAL.

ITM, ATM, OTM — The Most Important Classification

Example: Nifty at 25,000

• 25,000 CE = ATM
• 24,800 CE = ITM (already profitable by 200 if exercised now)
• 25,200 CE = OTM (need Nifty to rise 200 just to reach strike)
• 25,000 PE = ATM
• 25,200 PE = ITM
• 24,800 PE = OTM

The OTM Trap for Retail

OTM options have low premium (cheap-looking) but low probability of expiring profitably. A 25,500 CE costing ₹30 looks attractive until you realise Nifty needs to gain 2% in the remaining days just to reach strike — and another 0.12% beyond just to break even on premium. Most OTM options expire worthless. Cheap doesn't mean good.

The Three Forces That Kill Option Buyers

1. Time Decay (Theta)

Options are wasting assets. Each passing day reduces the option's time value, regardless of price movement. Theta decay accelerates non-linearly as expiry approaches:

• 30 days to expiry: ~3-5% decay per day
• 10 days to expiry: ~5-8% decay per day
• Last week: 15-30% decay per day
• Final day: most ATM/OTM options lose 50-100% of remaining time value

2. Implied Volatility (IV) Crush

Option premium depends heavily on implied volatility. Before known events (earnings, RBI policy, election results), IV runs high → premiums inflated. After the event, IV crashes → premiums collapse, even if direction was right.

Example: buy ITC pre-earnings calls at high IV; ITC reports good results but stock barely moves; calls lose 30-50% value despite "right" prediction. The IV crush ate the profit.

3. Asymmetric Move Requirement

Buying options requires a significant directional move just to break even. A 1% move in 7 days isn't usually enough to overcome premium + decay. Sellers, by contrast, profit from sideways markets too — they only lose on big moves against them.

Why Option Sellers (Writers) Often Win — and Their Big Risk

Why Sellers Have Structural Edge

• Time decay always favours the seller
• Markets are often range-bound or moderately trending — both favour premium collection
• IV typically overestimates actual volatility ("volatility risk premium") — sellers pocket the difference

The Catch — Tail Risk

• Maximum gain capped at premium received
• Maximum loss can be many times the premium (especially for naked calls)
• One "Black Monday" can wipe out years of premium collection
• Adani-Hindenburg, COVID March 2020, demonetisation — option sellers blew up in each

Professional option sellers manage tail risk via spreads (sell + buy at higher strike to cap loss), strict position sizing, and avoidance of high-event periods. Most retail option sellers do none of this and eventually blow up on a single big move.

Common Retail Options Strategies (And Why Most Fail)

1. Naked Long OTM Calls/Puts ("Lottery Tickets")

Buy far OTM cheap options hoping for a big move. Most expire worthless. The few that hit pay 5-10x but the high failure rate destroys overall returns.

2. Selling Naked Options for "Steady Income"

Sell ATM options weekly to collect premium. Works for months until one Adani-style move wipes out a year of premium. The risk-adjusted return is negative for most.

3. Iron Condor / Strangles

Defined-risk strategies (sell options at two strikes + buy further OTM as hedge). Win in range-bound markets, lose in trending markets. Most retail traders mis-execute.

4. Hedging an Existing Portfolio

The ONE strategy that consistently makes sense for retail — buying Nifty puts to hedge an existing long portfolio during expected volatility. Cost is the premium; benefit is capped downside on hedged amount.

When (Rarely) Retail Options Make Sense

• Hedging existing equity portfolio during expected volatility (budget, elections)
• Defined-risk strategies on Nifty with strict capital limits (under 5% of portfolio)
• Buy puts to express bearish view (limited loss vs short selling's unlimited loss)
• Never sell naked options without comprehensive understanding of tail risk and adequate capital buffer
• Avoid OTM lottery-ticket trades — they look cheap but compound to large losses over time