Topical Terminology > Weak-form Efficiency
1 Definition
Weak-form Efficiency
For Weak-form Efficiency we have a term and definition in Finance.
Weak-form Efficiency (Finance) 
A pricing theory that the price of a security reflects the past price and trading history of the security. Theory implies that security prices follow a random walk. Related: Semistrong-form efficiency, strong-form efficiency.
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