Editor's Note: Options are not suitable for all investors. Options involve risks, including substantial risk of loss and the possibility an investor may lose the entire amount invested in a short period of time. Please see the Characteristics and Risks of Standardized Options.
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Quadruple witching refers to the simultaneous expiration of four popular investment contracts, which can create a surge in trading activity. Quadruple witching day occurs on the third Friday in March, June, September, and December.
The last hour of those trading days is known as the “quadruple witching hour,” when many derivatives contracts expire, often creating volatility in the markets. That’s because there may be higher market volume on those days as traders either close out or roll over their positions.
Key Points
• Quadruple witching involves the simultaneous expiration of four types of investment contracts, often characterized by increased market volatility on those trading days.
• This phenomenon occurs on the third Friday of March, June, September, and December, with generally heightened activity in the final trading hour.
• The four contracts involved are stock options, stock index futures, stock index options, and single stock futures, all of which are derivatives tied to underlying assets.
• Increased trading volume on quadruple witching days may result in significant price swings and influence the market dynamics, especially among active traders.
• While quadruple witching may not impact long-term investment strategies, it presents potential increased short-term trading activity and market volatility.
What Is Quadruple Witching Day?
Quadruple witching, or quad witching, is trader terminology for the four dates on the calendar when four kinds of derivatives contracts expire: stock options, index futures, options, and single stock futures.
These contracts have expiration dates that will match up each quarter, which is why quadruple witching, or quad witching, happens in the third, sixth, ninth, and twelfth month of the year respectively. The expiration for these contracts happen at the same time in the day.
The phenomenon is frequently also referred to as triple witching, since single stock futures only trade outside of the U.S. currently. That might be changing soon, however, with the global derivatives marketplace, the CME Group, announcing an upcoming launch of these assets in 2026.
While events like quadruple witching may not impact how and when you invest (especially if you’re investing for the long term), they are a good reminder of the potential investment risks that investing strategies may involve.
How much attention individual investors pay to witching day may depend on their investing philosophy and their time horizon. Since quad witching tends to result in short-term volatility, many investors may ignore these events entirely. On the other hand, active investors who try to time the market and get in and out of trades quickly may use quad witching days to inform their strategy and weigh potential buying or selling decisions around witching hour, though attempting to time the market is a high-risk endeavor.
Contracts Involved in Quad Witching
To understand quadruple witching, it helps to understand the different derivatives contracts involved. Stock index futures, stock index options, single stock futures, and single stock options are all derivatives, meaning their value corresponds to the value or change in value of an underlying asset. The underlying assets are either stock market indexes, like the S&P 500, or individual company stocks.
Options contracts give holders the right, but not the obligation, to buy or sell a stock (or other assets) at a certain price by or upon the contract’s expiration date. Futures contracts are contracts to purchase shares of a given stock at a certain price on a future date.
For indices, futures and options are contracts on the value of an equity index. Investors often use these either to hedge or speculate on the moves of an index. All four derivatives are complex investments that involve risks when investing in the market, and they’re generally used by advanced traders and institutional traders.
Recommended: Is it Possible to Time the Stock Market?
How Does Quadruple Witching Affect the Market?
Quadruple witching days are the four days of the year when these types of contracts all expire. On those days, holders may choose to exercise their contracts, which may be settled through the exchange of assets or cash, or they may make additional transactions to attempt to take advantage of arbitrage opportunities.
This can lead to more buying and selling of shares than is typical for a given day or a given hour. Increased volume can mean more volatility in the markets and the possibility of large swings during the day.
One reason these days can cause disruptions in the markets is that while certain positions expire, investors may want to extend them. This means they have to “roll” the position in order to keep it active, potentially prompting other players in the market to buy or sell, especially if the market is already volatile or choppy.
For trades that involve the transfer or automatic buying of stock, as with standard in-the- money options trades on individual shares, the quadruple witching date can mean the increased buying of shares to fulfill the options contracts, often leading to price spikes even if there is no “fundamental” reason for them.
Overall, volumes in options trades can go up on quadruple witching days, which can sometimes have a ripple effect on the price of the underlying assets involved in derivative contracts.
The Takeaway
Quadruple witching day occurs on the third Friday in March, June, September, and December. The last hour of those trading days is known as the “quadruple witching hour,” when many derivatives contracts expire, often creating volatility in the markets. That’s because there may be higher market volume on those days as traders either close out or roll over their positions.
Quadruple witching offers an opportunity to understand how market mechanics may affect actual prices, but it may not impact strategies for most long-term investors. More experienced investors and traders may identify potential opportunities, however, as the markets enter a period of heightened volatility.
SoFi’s options trading platform offers qualified investors the flexibility to pursue income generation, manage risk, and use advanced trading strategies. Investors may buy put and call options or sell covered calls and cash-secured puts to speculate on the price movements of stocks, all through a simple, intuitive interface.
With SoFi Invest® online options trading, there are no contract fees and no commissions. Plus, SoFi offers educational support — including in-app coaching resources, real-time pricing, and other tools to help you make informed decisions, based on your tolerance for risk.
FAQ
What is quadruple witching day?
Quadruple witching day refers to four dates each year when four types of derivatives contracts — stock options, stock index futures, stock index options, and single stock futures — expire simultaneously. These dates fall on the third Friday of March, June, September, and December. The final hour of trading on these days is known as the quadruple witching hour.
Does quadruple witching affect stock prices?
Quadruple witching can lead to increased trading volume and short-term price volatility, as traders close out, exercise, or roll over expiring contracts. This activity may cause price swings in the underlying assets tied to those contracts. The effect tends to be most pronounced during the final hour of the trading day.
How is quadruple witching different from triple witching?
Triple witching refers to the simultaneous expiration of three derivatives contracts — stock options, index futures, and index options. Quadruple witching adds a fourth contract type, single stock futures, to that same expiration event. The two terms are sometimes used interchangeably since single stock futures are not currently traded in the U.S. However, that appears to be changing with the CME Group’s recent announcement of launching U.S. single stock futures in 2026.
What does quadruple witching mean for long-term investors?
Quadruple witching may cause short-term market volatility, but the effect on long-term investment strategies is generally limited. The increased trading volume and price swings associated with these dates tend to be temporary, resolving as contracts expire and trading activity normalizes. Long-term portfolios are typically more influenced by fundamental factors than by single-day market events.
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Options involve substantial risk of loss and the possibility an investor may lose the entire amount invested. Before starting options trading, investors should be familiar with the Characteristics and Risks of Standardized Options . TTax implications with options should be considered. Consult your tax advisor to understand any impacts to your taxes.
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