What It Is
Theory proposing prices incorporate available information, limiting persistent excess returns.
Efficient Market Hypothesis (EMH) sits inside Part VI - Advanced Concepts and should be interpreted with adjacent concepts.
Concept Guide
Efficient Market Hypothesis (EMH) explained with practical workflows, risk-aware interpretation, and portfolio-level context.
Theory proposing prices incorporate available information, limiting persistent excess returns.
Efficient Market Hypothesis (EMH) sits inside Part VI - Advanced Concepts and should be interpreted with adjacent concepts.
EMH sets the default burden of proof for active strategy claims.
1. Define your edge hypothesis explicitly before active bets.
2. Benchmark active decisions against low-cost passive alternatives.
3. Track net alpha after fees and taxes over full cycles.
Believing market inefficiency automatically implies exploitable edge.
Concept FAQs
It is most useful when combined with complementary concepts from the same cluster and explicit risk controls.
Avoid one-metric decisions. Confirm with at least one independent signal and pre-define sizing and invalidation rules.