system
A chat on subreddit /r/NoStupidQuestions
human
To add a bit to this, it is certainly true there are (proportionate to their population) an impressively high number of Jewish people at executive levels of many industries. 

Is it a conspiracy? Not really. It’s just a mix of a history putting an emphasis on education and business more than other groups, plus hiring within their group. 

Just like a Harvard man likes to hire other Harvard men, let’s say the CEO of Large Bank Inc is Jewish. He’s likely to hire or recommend people in his circle, and Jewish people often associate with other Jewish people predominately (thanks to a long and rough history of being outcast).
gpt
I feel it's necessary to point out that every single US president has been Christian, midwife's are predominantly women, and trans people have higher rates of suicide. Was there a historical element to these trends? Yes. Is there now? Not particularly. Is it inherent to their demographic? No. Oppression can be a tradition and it's hard to buck.

Edit: specified