UPRO is capital weighted 500 stocks and TQQQ is capital weighted 100 stocks.
Asset allocation is the major concern. If you put 10% each on 10 different stocks, and you must exceed all others in the long run when you buy and hold.
If one or two drops heavily on sector rotation, you can not win over UPRO or TQQQ. When you buy UPRO and TQQQ for trading, you can easily allocation 80% or 100% level so that it is supported by 500 or 100 shares.
For buy and hold, better way is VOO and not UPRO, neither TQQQ.
I am not against buy WFH stocks or individual stocks, but asset allocation is the key. There, I see WQJ is super strong on key pickers.
Of course volume is higher, we know that since VIX is higher. The metric is pretty useless without put/call ratio. Going by VIX and fear gages, my guess would be more puts than calls.
You need to know how many products google has got other than ad business? Plenty…phone, waymo, nest, waze, youtube, office apps (mail,storage)…lot of venture funding etc. They will easily diversify the business.