Yes, now banks have begun to publicly admit that they approve of bitcoin, but this has not always been the case. Previously, they, like all large financial funds, as well as rich and influential people, said that bitcoin is just a toy that has no value. But over time, all of them, including banks, realized that they could do nothing with the number one cryptocurrency and decided that they needed to publicly approve it, because otherwise they would all seem stupid, denying the obvious advantages of bitcoin.
But in terms of investing: I am sure that they (banks and financial institutes) have always invested in bitcoin, almost from the day it appeared.
Why? So that all these influential sharks of the financial business do not speak publicly, but they always perfectly see the potential of financial instruments, including bitcoin.
Some banks have not approved anything like Bitcoin because it is unlawful in the country, and banks have no interest in Bitcoin. since he has no control over them. But, as I see it now, Bitcoin will emerge as the finest in the world, and everyone will want to invest in it since it is the best right now. Even in countries where Bitcoin or other crypto currencies are not permitted, people invest in Bitcoin in secret. Some people claim that Bitcoin has no value, which I believe is due to a lack of knowledge regarding Bitcoin and the benefits of BTC.