first round, phone interview, I applied to the NY office, and they give me this 30 min interview over calling me in the morning. One of my classmate got through the 1st round interview and the chance to go to New York for 2nd round, still wait for the result. I thought the reason I didn't prepare well is not successfully present the advantage I have and showing my skills

Applied through campus recruiting. First round had fairly easy questions about background and an expected value question with a options value question. Second interview was more about your interest in the markets.