- Market efficiency refers to stock prices and security
prices.
 
- Which reflect relevant information.
 
- It measures the information of market availability providing
maximum amount of opportunities to purchasers and sellers.
 
- To effect transactions.
 
- And with out raising transaction costs.
 
- Successful value investors make money by purchasing stocks that
are under valued .
 
- By selling them when their prices are high or
 
- Exceed their intrinsic worth.
 
- Fees charged by active managers are seen as proof.
 
- Because it stipulates efficient market has low transaction
costs.
 
Market efficiency can be categorized in to three basic
levels:-
Weak form EMH:
- Impies that market is efficient reflecting all market
information.
 
- It Assumes that rates of return in market should be
independent.
 
- Rates of return in the past should not effect future
rates.
 
Semi strong EMH:-
- -implies that market is efficient reflecting publicly available
information.
 
- This level assumes that stocks adjust to absorb new
information.
 
- Stock prices reflect new information and
 
- Investors purchase stocks after the information is
released.
 
Strong form EMH:-
- Implies market is efficient and reflects information both
public and private.
 
- Stock prices reflect all information.
 
- No investor would be able to make profit above the average
investor.
 
- Even though he was given new information