Generally I would say "no". The exception of course being the Abrahamic religions Judaism, Christianity and Islam, which prohibits taking advantage of "brothers" (those with the same faith) by charging interest - this obvious opened up a nisce for minorities of other faiths.
But it's not as clear cut, as - to take Europe - Jews didn't only lend money to Christians, there were also Christians who let money to Jews... the important thing, was not to lend to people of your own faith. Of course since there were fewer Jews in Europe than Christians, the wealth from this where most obviously accumulated among the relatively few Jews.
Minorities were often heavily taxed - both Jews andin Christian Europe and non-muslims under Islam. Further more, minorities risked having their whole fortune sieced, being arrested or expelled.
If you look at other minorities - especially non-religious or at least not Jews or Christians - they have not fared well at all.