When the Mystery Is Gone: Trade Like an Options Market Maker

Who’s the mysterious person behind the curtain who takes the other side of your trade? Market makers are paid to take risk and provide market liquidity. Find out how this helps you.

3 min read

Options market makers don’t hold the secret formula. They’re just doing their job.

In The Wizard of Oz, Dorothy and her friends go to see the all-powerful wizard believing that he can solve their problems. Instead, they discover that the man behind the curtain is simply an elderly illusionist.

If you’re an options trader, you can probably relate. Who’s the mysterious person behind the curtain who takes the other side of your trade? And why are they willing to do it? After all, if you’re placing a trade that you’re convinced will be a winner, why would someone else want to take the “losing” side?

For starters, options market makers are not all-powerful wizards. They are simply professional traders who are paid to take risk and provide market liquidity in order to make it easier for us little guys to enter and exit trades.

Same Motivation, Different MO

It’s important to realize that there are key differences between how retail traders—you, sitting at home in front of your computer or trading on your smartphone—and the market makers, the professionals, build and manage positions. Retail traders choose to enter any position they like, using any stock and any option strategy that they fancy. Market makers build their positions (also referred to as “inventory”) primarily by taking the other side of retail trades. For some, this begs the question: is option trading a zero-sum game? If a retail trader sells, say, a call option, and a market maker buys that call option, can there be only one winner and one loser, or can both sides potentially profit? Let’s find out in the following example.

Suppose a retail trader who owns 100 shares of a stock decides to sell a covered call, which is a common strategy. With the stock trading at $75.21, she decides to sell the September $77.50 call for a premium of $1.13 (figure 1). She’s then obligated to sell her stock at $77.50. In return, she collects a $113 premium (less commissions and fees). That premium is hers to keep regardless of the trade’s outcome.

Sample weekly option chain

FIGURE 1: Sample weekly option chain on the thinkorswim® paperMoney® platform. For illustrative purposes only. Past performance does not guarantee future results.

Now, assume that a market maker takes the other side of this trade and buys the call option. Why would he buy an option that is out of the money (OTM)? An OTM call option has a strike price that is higher than the market price of the underlying asset (a put option has a strike price lower than the market price). OTM options have a higher likelihood of expiring worthless. Does he know something that the retail trader does not?

Not likely. The answer lies in the fact that an option is a derivative—its price is derived from the underlying stock, and that stock can be used to hedge the position. Market makers hedge the risk of option trades by simultaneously buying or selling stock. In this example, the market maker could sell shares of stock short to possibly help offset the risk of buying the call option. If the price of the stock declines, the loss on the call option might be offset by the gain in the short stock position used as a hedge. In theory, both sides can potentially profit from being on opposite sides of the same trade depending on the steps they take to hedge their respective positions.

Inventory Control

When market makers manage positions, it’s not all that different from any business owner storing stockpiles of a product. Think of a farmer who has a lot of corn to sell. He doesn’t know exactly where the price will be when it’s time to sell, so he can hedge that price risk using another type of derivative—futures contracts that lock in a sales price. Market makers don’t know exactly where the price of the underlying stock will be at expiration, so they often use stock, options, futures contracts, or other derivatives to help them manage risk.

That’s right. The person on the other side of the curtain does not have all the answers. Market makers are simply professional traders who think about their positions a little differently than you do. It’s that different way of thinking that deepens markets for all who use them.

Start Experimenting with paperMoney®

Trading and risk. They’re like peanut butter and jelly. But paperMoney lets you test-drive strategies and get comfortable with thinkorswim using virtual accounts, so you don’t have to risk a dime.

Call Us

A covered call strategy can limit the upside potential of the underlying stock position, as the stock would likely be called away in the event of substantial stock price increase. Additionally, any downside protection provided to the related stock position is limited to the premium received.

A long call option position places the entire cost of the option position at risk. Should an individual long call position expire worthless, the entire cost of the position would be lost.

The risk of loss on a short sale is potentially unlimited since there is no limit to the price increase of a security. There is no guarantee the brokerage firm can continue to maintain a short position for an unlimited time period. Your position may be closed out by the firm without regard to your profit or loss.

Transaction costs (commissions and other fees) are important factors and should be considered when evaluating any options trade.

The paperMoney software application is for educational purposes only. Successful virtual trading during one time period does not guarantee successful investing of actual funds during a later time period as market conditions change continuously.

Investools, Inc. and TD Ameritrade, Inc. are separate but affiliated companies and are not responsible for each other’s services or policies.

Investools® does not provide financial advice and is not in the business of transacting trades.

Futures and futures options trading is speculative, and is not suitable for all investors. Please read the Risk Disclosure for Futures and Options prior to trading futures products.


Market volatility, volume, and system availability may delay account access and trade executions.

Past performance of a security or strategy does not guarantee future results or success.

Options are not suitable for all investors as the special risks inherent to options trading may expose investors to potentially rapid and substantial losses. Options trading subject to TD Ameritrade review and approval. Please read Characteristics and Risks of Standardized Options before investing in options.

Supporting documentation for any claims, comparisons, statistics, or other technical data will be supplied upon request.

The information is not intended to be investment advice or construed as a recommendation or endorsement of any particular investment or investment strategy, and is for illustrative purposes only. Be sure to understand all risks involved with each strategy, including commission costs, before attempting to place any trade. Clients must consider all relevant risk factors, including their own personal financial situations, before trading.

This is not an offer or solicitation in any jurisdiction where we are not authorized to do business or where such offer or solicitation would be contrary to the local laws and regulations of that jurisdiction, including, but not limited to persons residing in Australia, Canada, Hong Kong, Japan, Saudi Arabia, Singapore, UK, and the countries of the European Union.

TD Ameritrade, Inc., member FINRA/SIPC. TD Ameritrade is a trademark jointly owned by TD Ameritrade IP Company, Inc. and The Toronto-Dominion Bank. © 2018 TD Ameritrade.

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