Extremely disappointing process. The PM I interviewed with was only interested in the strategy I built for another hedge fund. He was not at all interested in other work I did, or my skills. He kept asking me to give him specifics about the strategy, while I gave the more general detail from the academic research about the topic while telling him that it's proprietary. After realizing that I'm not giving out the specific variable names, data source, etc, he started telling me that what I did was completely wrong and my strategy wouldn't make money. Same with the other strategy I built for another hedge fund. Overall a terrible experience, not sure why they want to extract strategy from the interview, maybe they don't have much going on for themselves.