How many atheists are nihilists?

Nihilism (from the Latin nihil, nothing) is the philosophical position that values do not exist. Most commonly, nihilism is presented in the form of existential nihilism which argues that life is without meaning, purpose or intrinsic value. Moral nihilists ert that morality does not exist, and subsequently there are no moral values with which to uphold a rule or to logically prefer one action over another. Nihilism can also take the form of epistemological, metaphysical or mereological nihilism.