What retail investors should be noticing in NUH, page-15

I'm sure they will. I'm also yet to met a well off Technical Trader who hasn't made their money selling systems and coaching.

The act itself was not random, but do you know why that person made that trade? Do you know if others will make similar trades? Do you know who is likely to sell their parcel next? And do you know how much they are likely to sell? Do you know who is buying next? How much they will buy and when? These are the parts that are random. Hindsight analysis provides no reliable predictive capabilities. That's what makes it random. Sentiment changes as quickly as Trumps position on political policies.