Trend Versus Range Regimes
A market regime is a classification of conditions such as directional persistence or sideways variation under an explicit rule. It is an imperfect model, not a hidden state known with certainty in real time.
How it works
Possible rules use moving-average slope, directional movement or the efficiency of net displacement relative to total path length. Set the observation window before using the label. A regime detected after a full historical period cannot be applied to the first day of that period without look-ahead.
Worked example
Suppose five one-unit changes are +1,+1,+1,+1,+1. Net movement is 5 and total absolute movement is 5, giving efficiency 1. For +1,−1,+1,−1,+1, net is 1 and total is 5, giving 0.2. Both examples have the same number of bars and absolute movement, but different directional persistence.
Amounts, prices and scenarios are fictional teaching examples. They exclude any effects not explicitly stated and are not trade recommendations.
Limits and common mistakes
Short samples misclassify transitions. A trend label does not ensure future persistence, and a range can end with a discontinuous gap. Include the delay and costs of switching a strategy between regimes.
Knowledge check
Can a regime filter eliminate all losing trades?
Read the explanation
No. Classification uses imperfect historical information. Its value must be assessed against a baseline using net outcomes and unseen data.
References and further reading
These sources explain the underlying concepts and specifications. They do not endorse QBMFX Academy. Check the relevant market, protocol version and reporting rules before applying an example.