Bank Stock Return Sensitivity to Interest Rate Changes in Thailand

Abstract

Many studies were trying to explain the changes of stock returns by finding the factors impact on a certain market, industry, or stock. Focusing on the financial institution especially commercial bank, there are some research proved that interest rate is one of the crucial factor impact the commercial bank stock returns. Interest rate is the cost and return of money in financial market since commercial bank acts as major financial intermediary; therefore, interest rate is still the majority of its cost and return. In Thai stock market shows different result, the changing in interest rate reflects slightly on the change in stock returns. After taking a close look, the conclusion can be drawn from outcomes the bigger size of the bank experience the larger effect. Thus, bank size is not a real moderator affect the relationship, the trading volume of the bank is the real relevant factor. Consequently, the theory can be hold only if the market participants trade all bank stock equally.