Nasdaq Double Top Potential as Bollinger Bands Squeeze
The Nasdaq 100 index could be forming a double top pattern on the weekly chart. And if you follow Bollinger Band theory, now would be a time to be cautious on US big tech stocks. Here’s the rationale behind the theory, and what to look out for next.
How double tops work with Bollinger Bands
When the price of an investment forms two highs at a similar level, technical analysts call it a double top. You can use Bollinger Bands to help explain them behind the scenes.
The outer Bollinger Bands measure the volatility of an investment around the middle band (the 20-period moving average). The more those outer bands squeeze together, the lower the volatility of said investment. When they squeeze too far together, they often expand after.
That’s when volatility can come back with a vengeance – and the price picks a direction.
You can see that happening now with the Nasdaq weekly chart (where each bar represents one week of price action). The gold outer bands are squeezing together as the index has moved into a tighter trading range. When those bands inevitably expand, the Nasdaq will pick a direction – and likely have a volatile move.
Now let’s apply Bollinger Band logic to the Nasdaq’s two recent highs:
October 2025 high: the index traded high above the top Bollinger band, then closed the week back below it. That was the “euphoria top” – a more extreme, more volatile peak. After that peak, the index traded down to the white middle band (aka the 20-week moving average).
That’s where dip buyers stepped in – a rational decision at the time.
January 2026 high: the price made a slower, less volatile, and less extreme peak. It never traded above the top band – the price actually got rejected right on it, and the outer bands were much closer together. That was the “complacency top”.
And this time the sellers pushed the price below the middle band, and the dip buyers lost that support.
What to look out for next on the Nasdaq
Volatility goes both ways. That means there is a scenario where the Nasdaq breaks higher when the bands expand. A weekly close back above the middle band would improve those odds.
But as long as the Nasdaq is closing weekly candles below the middle band, the strength stays with the bears.
The bulls will hope they don’t get angry.
As usual, none of this is investment advice. If you want to understand how Bollinger Bands work in more detail, read my Bollinger Bands guide here.
