Quad Witching and Triple Witching: Dates, What Happens, and Risks

What Quad Witching and Triple Witching Are

Quad witching is the quarterly expiration day, on the third Friday of March, June, September, and December, when stock options, stock index options, and stock index futures expire together, historically along with single-stock futures. Triple witching is the same day described with three contract types instead of four.

• Triple witching: stock options + stock index options + stock index futures.
• Quad (quadruple) witching: the three above + single-stock futures.

US single-stock futures stopped trading when OneChicago, the last exchange listing them, closed in 2020. In practice, "quad witching" and "triple witching" now refer to the same session. Monthly options also expire on the third Friday in every other month; what makes the quarterly dates different is the futures expiration and the index rebalancing that lines up with it.

A few mechanics matter:

• Stock and ETF options generally stop trading at the 4:00 p.m. ET close and are settled in shares.
• Standard monthly S&P 500 index options (SPX) and stock index futures settle to a special opening quotation calculated from the Friday opening prices, so part of the settlement happens at the open, not the close.
• Index rebalances, including the quarterly S&P 500 rebalance, typically take effect after the close on the same day, which pushes large trades into the closing auction.

For single-expiration basics such as exercise and assignment, see the options expiration glossary entry.

2026-2027 Quad Witching Calendar

Quarterly expirations fall on the third Friday of the quarter-end month. If that Friday is an exchange holiday, expiration moves to the prior business day.

Sources: third-Friday expiration rules published by the Options Clearing Corporation and Cboe, and the NYSE 2026-2028 holiday calendar. Always confirm with your broker, since holiday schedules can change.

What Tends to Happen on Witching Days

Coverage from exchanges, index providers, and financial press points to a few recurring patterns. None of them is guaranteed, and the size varies a lot from quarter to quarter:

• Heavy volume, concentrated at the close. Quarterly witching sessions are frequently among the busiest trading days of the year, and much of that volume prints in the closing auction as index funds rebalance and expiring positions are closed or rolled.
• Rolling activity during the week. Futures traders typically roll to the next quarterly contract in the days before expiration, and options traders roll or close positions ahead of Friday.
• Pinning near large strikes. Some stocks close near heavily traded strikes on expiration, a pattern academic research links to hedging activity. It is inconsistent, and max pain options explains why the "price goes to max pain" story overstates it.
• Hedging levels reset. A large block of options disappears at once, so positioning measures like open interest and gamma exposure often look quite different the following week.
• Rebalance overlap. When the quarterly S&P 500 rebalance and other index changes coincide with expiration, individual stocks being added, removed, or reweighted can see outsized closing-auction volume.

Heavy volume does not equal a directional move. Many witching sessions are uneventful in price terms even when volume is unusual.

Risks for Day Traders on Witching Days

• Wider spreads at the wrong moments. Liquidity is usually deep overall, but spreads can widen briefly around the open settlement and in the last minutes before the close.
• Slippage. Fast moves into the close can fill market orders well away from the last quote. See what is slippage in trading.
• Late reversals. Closing-auction imbalances can move a stock sharply in the final minutes, erasing an intraday trend.
• Assignment and pin risk. Short options near the money at the close can be assigned unexpectedly, especially if the stock moves after hours before the exercise cutoff.
• Same-day expirations. Very short-dated contracts are especially sensitive to these swings; the 0DTE options trading guide covers that risk profile in depth.

A Paper-Trading Checklist for Witching Week

Use witching weeks to practice process rather than to chase volatility:

1. Mark the dates in your calendar at the start of the quarter, including holiday-adjusted days like June 17, 2027.
2. List expiring positions on Monday. Decide whether each will be closed, rolled, or held, and write down why.
3. Check index news. Note any S&P 500 or other index additions, deletions, or reweights effective that Friday.
4. Set alerts, not screens. Put price and volume alerts on your watchlist so you review moves instead of reacting to every tick.
5. Avoid market orders into the close in your paper account; use limits and record the spread you would have paid.
6. Plan exits before 3:00 p.m. ET so closing-auction swings do not force rushed decisions.
7. Review Monday. Compare what happened with your plan and note how open interest and positioning changed.

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Risk Disclaimer

Options and futures involve substantial risk and are not suitable for every investor; you can lose the entire premium paid, and short options and futures can lose more than your initial outlay. Descriptions of what tends to happen on witching days are general observations, not predictions. Tradewink is not a registered investment adviser, this article is educational and not personalized investment advice, and past or simulated results do not guarantee future results.