They own some Crypto currencies in their portfolio, but they are too scared to announce it.
It's just the way they play the game, hasn't much to do with being scared. The longer they manage to obfuscate their presence in the market, the more people believe that institutions will be coming at one point.
Overall, institutions have never been very open when it comes to high potential but still very speculative investments, because one tiny spark translates into a fomo run, and we have seen that back in 2017s ICO bubble.
As for the $2400 "wall street target", that's just nonsense. Crypto is a thinly traded retail market that can explode at any random moment, so waiting for certain levels could mean missing out on a great buying opportunity....