Rights, Not Obligations

An option is a contract that gives the buyer the right — but not the obligation — to buy or sell an underlying asset at a specific price (the strike price) by a specific date (expiration). Options are powerful tools that can be used for speculation, hedging, or generating income. But they're also complex and risky if used improperly.

Calls and Puts: The Building Blocks

Call option — Gives the buyer the right to buy shares at the strike price. You buy calls when you're bullish — you expect the stock to go up. If the stock rises above the strike price plus the premium you paid, you profit. If it doesn't, the option expires worthless and you lose only the premium.
Put option — Gives the buyer the right to sell shares at the strike price. You buy puts when you're bearish — you expect the stock to fall. Or when you want to protect (hedge) a long stock position. If the stock falls below the strike price, you profit.

Key Option Terminology

Strike price — The price at which the option can be exercised.
Expiration date — The last day the option contract is valid. Options lose value as expiration approaches (theta decay).
Premium — The price you pay to buy an option. It's determined by the stock price, strike price, time to expiration, volatility, and interest rates.
In-the-money (ITM) — The option has intrinsic value. For a call: stock price > strike price. For a put: stock price < strike price.
Out-of-the-money (OTM) — No intrinsic value. The option's entire value is time and volatility premium. Most options bought by speculators expire OTM and worthless.

Basic Option Strategies

Covered Call (Income Strategy)

You own 100 shares of a stock and sell a call option against those shares. You collect the premium. If the stock stays below the strike price, you keep the premium and your shares. If the stock rises above the strike, your shares get called away — you keep the premium plus the gain up to the strike price, but you miss out on gains above the strike.

This is a conservative strategy for generating extra income on stocks you'd be willing to sell at a higher price anyway.

Protective Put (Hedging Strategy)

You own 100 shares and buy a put option. If the stock crashes, the put gains value, offsetting some or all of your stock losses. It's like buying insurance — you pay a premium for downside protection.

Cash-Secured Put (Entry Strategy)

You sell a put option with enough cash in your account to buy the stock if assigned. You collect the premium. If the stock stays above the strike, you keep the premium. If it falls below, you buy the stock at the strike price (which you were willing to do anyway), and you effectively bought it at a discount because of the premium you collected.

Why Most Option Buyers Lose

Buying options is hard because you need three things to go right: the stock has to move in your direction, it has to move enough to overcome the premium, and it has to do it before expiration. Options sellers, on the other hand, benefit from time decay — they profit if the stock does nothing or moves only modestly.

Key Takeaways

Calls = right to buy (bullish). Puts = right to sell (bearish or hedging).
Options have time decay — they lose value every day as expiration approaches. This makes option buying difficult.
Covered calls and cash-secured puts are conservative strategies for income and better entry prices.