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REDDIT

TRIPLE WITCHING DAY - THIS FRIDAY SEPT 18th

A
Sep 15, 2026 · 13:34

**This Friday is triple witching day again!**

This means stock options, index options, and index futures all expire at the same time. In addition, this time we're adding the S&P rebalance. This means there will be enormous mechanical orders flooding in at the same time.

There will be a spike in volume from 3:30-4pm Eastern which sudden impacts on prices for big stocks. This will create opportunities.

I called this out the last time it happened and there were definitely some big moves.

Watch for the following:

* Sudden, erratic price swings
* Extreme trading
* Concentrated selling or buying on specific stocks at close

What to do:

* Some people try to game this by buying long straddles.
* Watch for bargains. I've seen a stock drop 5% in minutes. It will typically bounce back right away.

Stocks to watch

* Option intensive names like NVDA, TSLA - any of the MAG7. Other big tech stocks, semi stocks, and big financials.
* Forced index buying of BE/ILMN
* Forced index selling of TTD/BLDR/TAP

Good luck!