banks will never get involved with something like XRP, all they have ever done was getting involved in Ripple which is different. think of it as using the technology but discarding the token the foundation created. and is controlled by them.
as for the pump, it happens from time to time and there are a lot of whales who buy it and pump it to make profit. there is no hiding that but they wouldn't let anybody know until they plan on selling their stash and getting their profit out. so whenever you hear about some "big player" buying XRP know that it is time to dump it and get out.