The Sharpe ratio measures the increase in this quantity per unit increase in standard deviation.
This quantity is maximized on the "efficient frontier" in a theory developed by Harry Markowitz. The Sharpe ratio measures the increase in this quantity per unit increase in standard deviation. Thomas Piketty's Capital in the Twenty-First Century makes use of an inequality stating this quantity as greater than "g" or (*) growth. The "internal" variety of this quantity makes the net present value zero. The capital asset pricing model posits a linear relationship between beta, representing risk, and - for 10 points - what rate of profit on investment?
This quantity is maximized on the "efficient frontier" in a theory developed by Harry Markowitz.
(annual) rate of return [or return on investment; or ROI; prompt on "r" or "rate" or "profit"]