Term · Market & Classification
Information Inefficiency
In briefInformation inefficiency exists when available information is not fully or not promptly priced into the price, for example due to low analyst coverage and thin trading. Prices can then deviate from the plausible value for longer, which raises both opportunities and the risk of misjudgment.
Definition
Information inefficiency describes a state in which available information is not fully or not immediately priced into the price. Causes include, among others, low analyst coverage, thin trading and limited disclosure. In such markets, prices can deviate from a plausible value assessment for longer.
Why it matters for small caps
Nano and micro caps are considered more information-inefficient because they are scarcely covered by analysts. This can hold opportunities but at the same time raises the risk of misjudgments and price distortions.
Common misreadings
- Information inefficiency is often equated with a sure chance of profit, even though it can equally lead to persistent mispricings to the detriment of investors.
In the process
Frequently asked
Why are small stocks more information-inefficient?
They are covered by few or no analysts, are less present in the media, and are less liquid. As a result, new information flows into the price more slowly.
Is information inefficiency an opportunity?
It can enable valuation differences, but it works in both directions. Mispricings can equally persist to the investor's disadvantage and fail to resolve.
How does it relate to the efficient market hypothesis?
The efficient market hypothesis assumes that prices reflect all information. Information inefficiency describes deviations from this, especially in little-followed market segments.
Related terms
Education only, not investment advice. Ranges and thresholds are didactic orientation values, not an official standard.