raditional finance, based on discounted flows (DCF), perceives risk essentially as a threat. In the calculation of NPV, increased uncertainty results in a higher risk premium, increasing the WACC and mechanically reducing the present value of future flows. This approach, often referred to as static, implicitly assumes that investment decisions are irreversible and that the manager passively suffers future uncertainties.

The Real Options approach  reverses this perspective by introducing managerial flexibility. It considers uncertainty as a potential source of value, provided that the company has the right (but not the obligation) to adjust its trajectory. Just like a financial option, a real option has a value that increases with the volatility of the underlying asset. The more uncertain the future, the more valuable the possibility of changing decisions (abandon, postpone, extend, reconvert).

The integration of flexibility makes it possible to calculate an Expanded NPV (ENPV), which is equal to the classic NPV + the value of the real options. For example, a project may have a negative classic NPV (because the initial investment is heavy and the market is uncertain), but become acceptable if the possibility of investing in stages (“growth option” or “phased investment”) is valued.

• If the market turns out to be favourable (good news), the company exercises its option to invest more to capture the upside risk.
• If the market is unfavourable (bad news), it limits its losses by not exercising the option, thus controlling the downside risk.

There are two types of strategic options: process optimization options (PORO) such as production flexibility, and growth opportunity options (GORO) such as R&D or patents that open doors to new markets. Adopting an “optional mentality” therefore means paying a premium (cost of flexibility, additional cost of a pilot investment) to acquire information and reduce uncertainty before committing massive resources.