Good news coming from these sources makes me suspect a large dump coming soon.
Not sure what you are worried about.
Large dumps must come from existing holders. Any existing holder can dump at any time. This has always been the case. Just need to look at rpietila's list to see where the risk of that is. Also, large dumps are good in the long run as they spread the coinage into more hands.
The big banks are not monolithic like the Romulans or the Borg! Analysts have free rein to examine areas of the financial landscape within their purview (stocks, bonds, commodities, RE, etc). Their opinion helps take Bitcoin into the mainstream of the world economy, which it has to, eventually. Perhaps what they don't write yet is that everyone in the financial sector will utlimately have their jobs irrevocably changed as a result of the crypto revolution.