SPY vs. SPX Credit Spreads Since 2022: Which Has Been More Profitable?

 Since 2022, options traders have experienced one of the most dynamic market environments in recent history. Following the heightened volatility of 2020 and 2021, markets entered a period characterized by rising interest rates, persistent inflation concerns, banking sector stress, and renewed bullish momentum driven by advances in artificial intelligence and technology. Throughout this period, credit spread strategies remained a popular approach for traders seeking defined-risk income opportunities.

A common question among options traders is whether SPY or SPX credit spreads have offered better opportunities since 2022. While both products track the S&P 500 Index, they differ in important ways that can affect trade execution, capital requirements, taxation, and overall strategy performance.

Understanding SPY and SPX

SPY is the SPDR S&P 500 ETF and is one of the most actively traded exchange-traded funds in the world. Its options market provides exceptional liquidity, narrow bid-ask spreads, and expiration dates available throughout the week.

SPX options, on the other hand, are based directly on the S&P 500 Index. Unlike SPY, SPX options are cash settled and cannot be assigned shares of stock. They are also European-style options, meaning they can only be exercised at expiration.

Although both instruments generally move together, their option characteristics can produce meaningful differences for credit spread traders.

Why Credit Spreads Became Popular After 2022

The market environment beginning in 2022 created favorable conditions for many premium-selling strategies.

Several factors contributed:

• Elevated implied volatility during major economic events
• Frequent market pullbacks followed by recoveries
• Large intraday swings that increased option premiums
• Consistent option liquidity across multiple expirations

Higher implied volatility generally increases option premiums, allowing traders to collect larger credits while maintaining similar probabilities of success.

Comparing Profitability

From a directional standpoint, a well-constructed SPY credit spread and an equivalent SPX credit spread typically behave very similarly because both track the S&P 500.

However, profitability is influenced by several practical considerations.

Liquidity

Both SPY and SPX are among the most liquid options markets available.

SPY often provides extremely tight bid-ask spreads for smaller position sizes, while SPX also offers deep institutional liquidity.

For most traders, execution quality is excellent on either product.

Position Size

One SPX contract represents approximately ten SPY option contracts.

For traders with smaller accounts, SPY provides much greater flexibility for scaling positions and managing risk.

Institutional traders often prefer SPX because they can obtain larger market exposure with fewer contracts.

Early Assignment Risk

One significant advantage of SPX is that it eliminates early assignment risk.

SPY options are American-style options and may be exercised before expiration under certain circumstances.

SPX options are European-style and are only exercisable at expiration, simplifying trade management for many premium sellers.

Cash Settlement

SPX options settle entirely in cash.

This means traders do not receive or deliver shares when positions expire in the money.

Many experienced options traders appreciate this feature because it removes overnight assignment concerns that sometimes occur with ETF options.

Volatility Since 2022

Since 2022, implied volatility has repeatedly expanded during periods of market uncertainty.

Examples include:

• Federal Reserve interest rate announcements
• Inflation reports
• Banking sector volatility
• Geopolitical events
• Major earnings seasons

Premium sellers who maintained disciplined risk management often benefited from periods when implied volatility contracted after these events.

However, elevated volatility also increases the probability of larger market moves, making position sizing especially important.

Risk Management Matters More Than Product Selection

Many traders spend considerable time debating whether SPY or SPX is the better vehicle.

In reality, long-term profitability is often determined more by execution than by product selection.

Important considerations include:

• Position sizing
• Strike selection
• Days to expiration
• Implied volatility at entry
• Profit-taking rules
• Maximum loss limits

Two traders using identical products can experience dramatically different outcomes depending on how consistently they apply their trading plan.

Backtesting Credit Spread Strategies

Historical backtesting has become an increasingly valuable tool for evaluating options strategies.

Rather than relying on assumptions or isolated examples, traders can analyze thousands of historical trades across different market environments.

Backtesting allows traders to answer questions such as:

• Which delta produced the highest historical win rate?
• How did 30-day credit spreads compare to 45-day spreads?
• Was closing at 50% of maximum profit historically more effective than holding until expiration?
• How did different market volatility regimes affect results?
• Which combinations of strike width and expiration generated the best risk-adjusted returns?

Using historical data enables traders to evaluate strategies objectively before risking capital in live markets.

Taxes and Other Considerations

Another difference many traders evaluate is tax treatment.

Depending on an individual's jurisdiction and circumstances, index options and ETF options may receive different tax treatment. Because tax rules vary and can change over time, traders should consult a qualified tax professional to understand how those rules apply to their own situation.

Transaction costs, commissions, and account size should also be considered when deciding which product best fits a particular trading approach.

Which Is Better?

For many retail traders, SPY remains an excellent choice because of its accessibility, flexibility, and highly liquid options market.

SPX may appeal to traders who prefer cash settlement, want to avoid early assignment risk, or trade larger position sizes with fewer contracts.

Neither product is inherently more profitable simply because it is SPY or SPX. Profitability depends on the quality of the trading strategy, disciplined risk management, market conditions, and consistent execution over time.

Final Thoughts

Since 2022, both SPY and SPX have provided numerous opportunities for credit spread traders across a wide range of market conditions. Elevated implied volatility, frequent market swings, and abundant liquidity have created an environment where defined-risk premium-selling strategies remain attractive for many participants.

Rather than focusing solely on which product is superior, traders often benefit more from understanding how different strategy parameters have performed historically. Backtesting can help identify strengths, weaknesses, and risk characteristics across multiple market environments, providing valuable insights before committing real capital.

Whether you trade SPY or SPX, combining disciplined risk management with historical analysis can help you make more informed decisions and build greater confidence in your options trading strategy. 

Understanding the Benefits and Risks of Selling Volatility with SPY Credit Spreads

One of the most popular income-oriented options strategies is selling credit spreads on the SPY ETF. Rather than attempting to predict large directional moves, many traders use credit spreads to capitalize on the tendency for implied volatility to exceed realized volatility over time. While no options strategy is risk-free, credit spreads provide a defined-risk approach to expressing a neutral or moderately directional market outlook.

What Is a Credit Spread?

A credit spread is created by simultaneously selling one option while purchasing another option farther out of the money with the same expiration date. The option sold generates more premium than the option purchased, resulting in a net credit deposited into the trader's account when the position is opened.

Two common types include:

• Bull Put Spread: A bullish to neutral strategy that profits if SPY remains above the short strike.
• Bear Call Spread: A bearish to neutral strategy that profits if SPY remains below the short strike.

Because the long option limits potential losses, credit spreads have a predefined maximum risk and maximum reward.

Why Many Traders Sell Volatility

Options are priced using expected future volatility. This expectation is reflected in implied volatility (IV), which often exceeds the actual movement the market ultimately experiences. As a result, option premiums may contain an additional "volatility premium."

When implied volatility contracts or the underlying security experiences less movement than anticipated, option sellers may benefit as option values decline.

This doesn't mean option sellers always have an advantage, but understanding how implied volatility influences pricing is an important part of options trading.

Defined Risk

One of the biggest advantages of credit spreads over selling naked options is defined risk.

Since a farther out-of-the-money option is purchased as protection, the maximum possible loss is limited to:

Spread Width − Credit Received

This predefined risk makes position sizing easier and allows traders to establish consistent risk management rules.

Time Decay Works in Favor of the Seller

Options lose value as expiration approaches, assuming all other factors remain constant. This phenomenon, known as theta, generally benefits option sellers.

With a credit spread, the objective is often for the options to lose value over time so the spread can be repurchased for less than the initial credit or expire worthless.

The closer the position moves toward expiration while remaining safely out of the money, the greater the impact time decay may have on the option premium.

High Probability Trades

Many credit spread traders choose strikes with relatively low probabilities of finishing in the money.

For example, selling a spread with a short option that has approximately a 15–30 delta generally provides a higher probability that the spread expires worthless, although the premium collected is smaller.

High probability does not mean guaranteed profit. Occasional larger losses can offset many smaller winners, making disciplined risk management essential.

Benefits of Trading SPY

SPY is one of the most actively traded exchange-traded funds in the world and offers several advantages for options traders:

• Excellent liquidity
• Narrow bid-ask spreads
• Numerous expiration dates
• High daily trading volume
• Transparent pricing
• Efficient order execution

These characteristics can help reduce transaction costs compared to less liquid option markets.

Managing Implied Volatility

Many traders prefer initiating credit spreads when implied volatility is elevated relative to recent history.

Higher implied volatility generally results in richer option premiums. If implied volatility subsequently decreases, the spread may decline in value even if SPY experiences little price movement.

Monitoring volatility conditions is often just as important as choosing strikes and expiration dates.

Position Sizing Matters

No strategy wins every trade.

Successful credit spread traders often focus on consistent position sizing rather than maximizing premium on individual trades.

Limiting risk per position can help reduce the impact of losing trades while allowing the probabilities associated with the strategy to play out over many occurrences.

Common Exit Approaches

There is no universally correct exit strategy, but many traders choose to:

• Close profitable trades before expiration after capturing a significant portion of the available premium.
• Define a maximum acceptable loss before entering the trade.
• Avoid holding positions through major market events if they exceed their risk tolerance.
• Review positions regularly rather than allowing every spread to expire.

Having predefined exit criteria can help reduce emotional decision-making.

Risks to Consider

Credit spreads are not without risk.

Large market moves, increasing volatility, or gaps beyond the short strike can produce losses. While risk is limited, the maximum loss on a spread is often several times larger than the initial credit received.

Additionally, changes in implied volatility, early assignment (for American-style options), and transaction costs can affect overall performance.

For these reasons, traders should understand how option pricing works and consider paper trading before risking real capital.

Final Thoughts

Selling volatility through SPY credit spreads is a popular strategy because it combines defined risk, the potential benefit of time decay, and the ability to profit when markets remain within an expected range. Rather than relying on large directional moves, traders seek to take advantage of option premium and changing market expectations.

Like any options strategy, success depends on more than simply opening trades. Position sizing, risk management, disciplined exits, and an understanding of implied volatility all play important roles in long-term consistency. Traders who take the time to learn these concepts and apply them systematically are better positioned to evaluate whether credit spreads fit their overall trading plan.