As someone who was interested in finance personally, from my perspective the only thing that matters is the ability for you to make them money. They are not looking to hire someone who is behind on the curve as a charity case, they are looking to make so much excess money that they can give money to actual charities to bring their taxes down. I'd focus less on playing the racial background of a company, and more on doing what it takes to be noticed in a positive manner.
All businesses exist to make money. I don't expect any firm to hire people as a charity case, but to look for qualified people that would fit with the company culture. My assumption is that there are a plethora of black people that would be qualified for what they are looking for, but I could be wrong.
While I agree with a company should do what's best for the bottom line, I do think black owned companies can give highly qualified candidates of their own race a first look. Major corporations go to Black MBA conferences, and work with black professional organizations, to support diversity initiatives. I would think a black owned firm could reach out to utilize similar methodology.
However, It's their company, and they can do what they want. But when we talk about black owned businesses being pivotal in the elevation of the black community, companies like this may not be as helpful as expected. If they aren't giving brothers and sisters jobs moreso than a white owned firm, then for the community it's pretty much the same as a white owned firm.