Short term I've noticed that ETF's pop up right about the time a hot sector gets cold similar to crypto ETF, Space ETF and quite a few others. It's almost like the news of a coming ETF drives up individual stocks in the last big run before the fall. I do think that mRNA is the future but it sure is crowded at the moment. There is also an ETF coming out for meme stocks with GME, AMC, BB and some others.