I need your thoughts on the following example regarding ROE calculation: Let say opening balance of equity is negative $100, net profit for period of $101, and closing balance of equity of $1 (as a sum of (100)+101). How to correctly calculate ROE and interpret figures. 1. Denominator = opening equity: ROE = 101/(100)*100% = minus 101% 2. Denominator = closing equity: ROE = 101/1*100% = 10,100% 3. Denominator = average equity: ROE = 101/[(-100+1)/2]*100% = minus 204%