看看这篇文章： How difficult is it to get into Jane Street, which makes a whopping $40 billion a year?
https://www.panewslab.com/en/articles/019dd85e-c455-72e6-bec0-b62a03e2c22e
1）on raw talent, not existing knowledge
2）You can prepare for other companies, but you really can't prepare for Jane Street.
Some veteran Jane Street interviewers have summarized several common reasons why candidates are rejected: overconfidence; silent thinking (Jane Street highly emphasizes "think out loud," and quiet thinking is a major taboo); refusing to place bets (being given an opportunity to market make but refusing it is equivalent to "not being willing to take risks"); additionally, when you are in a bad position, the interviewer will deliberately give you extremely poor quotes, and if you panic and accept them, you prove that you should not have been hired; ignoring hidden information in the questions, etc.
