What is the difference between the two? When you go in for an interview, how can you spot the firm to be a day trading firm or prop trading firm? The reason I am confused is because I have been interviewing with various companies and they all seem to have trading activities during the day only and hence, I think they are day trading firms. But they keep saying that they are NOT day trading firms and they are prop trading firms. Somehow I think they are trying to eliminate their images as day trading firms and telling people they are prop trading firms. What do you guys think?