In pituitary apoplexy, the main initial problem is a lack of secretion of adrenocorticotropic hormone (ACTH, corticotropin), which stimulates the secretion of cortisol by the adrenal gland. This occurs in 70% of those with pituitary apoplexy.
DEFINITION of 'Net Present Value Rule'. A rule stating that an investment should be accepted if its net present value is greater than zero and rejected otherwise.According to the theory of net present value (NPV), participating in a positive NPV project will increase firm or shareholder wealth. rule stating that an investment should be accepted if its net present value is greater than zero and rejected otherwise.
The drawdown (at least according to Wikipedia), saves a peak's value, and for every value later which is lower than the value of the peak, calculated: $DD = {(peak - value) \over peak}$. The problem arises when the first peak of the trading strategy is of value 0. That forces me to divide by 0. For backtesting purposes, I always assume the net value of the robot is 0, and from that point on it makes profits or losses. Other assumptions may solve the problem, but arbitrarily; different decisions for initial value will lead to different drawdown calculation results.