QQQ: Closing 2 standard deviations below the basis

Setting the Bollinger Bands to a length of 30 days, we can see that there have been two times this year when we have been below 2 std dev.
One between the 3-8 March.
The other on the 12-13 of May.
Both were followed by a rally to the basis.

I think the best time to go long will be somewhere at the end of this week: maybe on Thursday or Friday.

Also, if you are afraid of a possible crash I suggest you watch this video by Matthew R. Kratter on the matter: youtube.com/watch?v=42-hsgy-zuQ