An index provider has created a new investable index that tracks the hedge fund industry. Any fund that follows a long/short equity strategy can enter the index. The index provider places new constituents in the index at the end of each year and incorporates the new funds' track record in the database. Which of the following is least likely a bias that might distort the historical performance of the index?
C is correct because this is not a bias that is associated with distorting the performance of a hedge fund index. Tracking error is a risk more commonly associated with mutual funds and ETFs when their investments deviate significantly from those in the index it is benchmarked against. Many hedge funds pursue absolute returns and may deviate materially from indices.