Several portfolio managers have been cut by Citadel or resigned from the firm after the $29 billion hedge fund closed its Aptigon stock-picking unit last week. Two of the portfolio managers that were let go were Vincent Daniels and A. Porter Collins, who were featured characters in the Oscar-nominated movie "The Big Short" for their work at the then-Morgan Stanley owned hedge fund FrontPoint Partners. Citadel's most recent cuts including two hedge fund managers whose past performance nearly won an Academy Award.