How much do hedge-fund professionals earn? Less than you suspect. SumZero is an Internet community of fund professionals working for firms with an average of $4.1 billion in assets under management. We asked SumZero to compile total compensation data from their pool of 9,100 hedge-fund professionals working at funds with an average of $2.6 billion under management. Those with executive titles, a total of 3,250 respondents, earned a median of $322,500 annually in total compensation, which includes salary, bonuses, and any deferred compensation. That’s less than we expected. The lowest pay package came to zero, probably because the executive decided...