What companies are included in the Nasdaq CTA Artificial Intelligence & Robotics (NQROBO)?

I cannot find a list with the weight of the different companies included in the index (and in the corresponding ETFs, like WTAI).

This page does not list anything:

https://indexes.nasdaqomx.com/index/Weighting/NQROBO#

Why? What sites do you use to see the composition of an index (or ETF)?