I don't usually trade the cubes but I took a look at the QQQQ options and noticed two things I never noticed before. 1) .63 cent increments? 2) Quarterly options? Is that something new?
The end-of-month options started a few months ago. SPY has 'em, too. I think the .625 options are from the MSFT special dividend a couple years ago. It affected the near-term options then and all the LEAPs.