Options Trading Basics for Beginners: Calls, Puts and Why New Traders Can Lose Money Fast

Options can look like a shortcut: put down a few hundred dollars and control the price movement of 100 shares. That leverage is real, and so is the risk. An option can lose all of its value in days, and some strategies can lose far more than you put in.

This guide is educational, not a recommendation. It explains what calls and puts are, walks through the SEC's own worked examples, and lays out the specific ways new options traders commonly lose money, so you can decide with clear eyes whether options belong anywhere near your portfolio.

What are stock options?

A stock option is a contract giving its buyer the right, but not the obligation, to buy or sell 100 shares at a set price by a set date. A call is the right to buy; a put is the right to sell. The buyer pays an up-front premium, which is lost if the option expires worthless.

Options are derivatives, meaning their value comes from something else, such as a stock, an exchange-traded fund or an index. They trade on exchanges among individual investors, professional traders and institutions. Every option has a buyer, called the holder, and a seller, called the writer. SEC: An Introduction to Options

Calls, puts and the terms you need to know

The SEC breaks down a sample quote, "ABC December 70 Call $2.20," like this:

• ABC is the underlying stock.
• December is the expiration month. Standard monthly equity options typically stop trading on the third Friday of the month, according to the Options Industry Council, though weekly and other expirations also exist.
• 70 is the strike price, the price at which the holder can buy (for a call) or sell (for a put).
• Call is the type of contract.
• $2.20 is the premium per share. Because one contract generally covers 100 shares, it costs $220, plus any fees.

A call buyer profits if the stock rises enough above the strike price; a put buyer profits if it falls enough below it. Options are described as in the money, at the money or out of the money depending on where the stock trades compared with the strike. A call is in the money when the stock is above the strike, while a put is in the money when the stock is below it.

The seller's side is very different. A call writer must sell the shares at the strike price if the buyer exercises, and a put writer must buy them. The SEC notes that the premium is paid up front to the seller and is non-refundable. Options Industry Council: Options Basics