Our analysis assumes (assumption 3) that the firm maintains a constant
leverage ratio, L = B i-1 /VLi-1 , by adjusting the amount of outstanding debt, B i-1 to the realized levered market value, VL i-1 in each period. For a oneyear project life the leverage ratio is L = B0 / V0 and is constant by definition since neither an opportunity nor a requirement arises to rebalance the capital structure. However, since for any cash flow duration exceeding one year, including a level perpetuity, realized and expected levered market values may differ as a consequence of the risk inherent in the vinlevered component, active rebalancing by the firm is required to maintain a constant L = B i-1 /VLi-1 .