Of course he did.
Frankly, I'm not sure T-Rump caved in the face of these banksters (although I wouldn't be surprised to find out he owes some of them big money). I think it's more likely that his anti-Wall Street schtick during the campaign was just more of his bullshit to get votes. He has no more scruples than an actual politician.
...but hey, do what you want...you will anyway.