Being a quant is inherently accumulating and growing someone's wealth for them, even if it's not your own.

If there were a way to be a true Robin Hood and only extract wealth from the wealthy and redistribute that to poor, I'd call that a noble cause, although finance is not my field (nor is crime, for that matter) so it's not for me.

My chosen wealth multiplier is working at a community-owned cooperative, building the wealth for others directly.

Not sure about this because many charities are designed to spend their income, rather than hoard it. A big part of choosing which charity to donate to is, or should be, how effective they are in spending what you give them.

I mean, I'm not arguing that if you can find a way to make a large amount of money in an ethical way without enriching yourself or the wealthy further and then find a way to accurately evaluate charities to maximize impact, that you shouldn't do that. But there are several very difficult problems embedded in that path, and I could easily sees just solving all of those problems becoming a full-time job by itself.

I also, candidly, haven't ever seen anyone successfully do that.