Читать книгу Positional Option Trading - Euan Sinclair - Страница 23

 Exceptions to the EMH exist but they are rare.

 Exceptions will either be inefficiencies, temporary phenomena that last only until enough people notice them, or poorly priced risk premia.

 Risk premia will persist and can form the core of a trader's operations but the profits due to inefficiencies will decay quickly and need to be aggressively exploited as soon as they are found.

 A promising trading strategy is one whose basis is independent of the specific methods used to measure it. Start with observation, then move to quantification and justification.