Options Trading Basics

Options are derivative contracts that give the buyer the right, but not the obligation, to buy or sell an underlying asset at a predetermined price (strike price) on or before expiry. Options are the most versatile financial instrument — used for speculation, hedging, and income generation.

Call Option: gives the buyer the right to BUY the underlying at the strike price. You buy a call when you expect the price to rise. If Nifty is at 22,000 and you buy a 22,200 Call, you profit if Nifty goes above 22,200 before expiry.

Put Option: gives the buyer the right to SELL the underlying at the strike price. You buy a put when you expect the price to fall. If Nifty is at 22,000 and you buy a 21,800 Put, you profit if Nifty falls below 21,800 before expiry.

Premium is the price you pay to buy an option. A Nifty 22,200 Call might cost Rs 150 premium. For a lot of 75 units, your total cost is Rs 11,250. This is your maximum loss as a buyer — you can only lose what you paid. Options buyers have limited risk (premium paid) and unlimited profit potential.

Options sellers (writers) receive the premium upfront but take on the risk. A Call seller profits if the stock stays below the strike; a Put seller profits if the stock stays above. Selling options provides consistent income in sideways or mildly trending markets — but a single large adverse move can wipe out many months of premium income.

Intrinsic Value vs Time Value: an option's premium has two parts. Intrinsic value is how much the option is "in the money" (ITM). A 21,800 Put when Nifty is at 22,000 has Rs 0 intrinsic value (out of money). Time value is the remaining potential — it decays as expiry approaches. This decay, called Theta, is the option seller's best friend and the buyer's constant enemy.

In India, Nifty and Bank Nifty options expire weekly (every Thursday). Stock options expire monthly (last Thursday). Weekly options have significantly higher theta decay — a double-edged sword.