Abstract :
Efficiency is one of working parameter that theoretically is one of
working that serve as a basis all of organization working. There is some approach
to measure organization efficiency. In Indonesia banking, ratio of operational cost
and operational income (BOPO) is efficiency measurement that is common used
to give score for banking efficiency working (Peraturan Bank Indonesia Nomor
6/25/PBI/2004). BOPO?s ratio is traditional approach within cost efficiency
measurement for bank and can not explain conditional of bank proper as well as
the result is difficult to be interpreted. DEA is one of the cost frontier approach
that can be used to measure banking efficiency. Bank that is more efficient is
better too for its working, so efficiency will be reflected in its stock price, because
in semi-eficient market, almost all of informations are reflected in stock price.
DEA is used to measure effiecieny from each Decision Making Units
(DMUs), that is got for maximum from ratio of weighted outputs with weighted
inputs. Banking efficiency measurement used five variables, that is two input
variables and three output variables. Input variables consist of Total Deposits and
Interest Expenses. Output variables consist of Total Loans, Interest Income, and
Non-Interest Income. All of variables are processed using EMS software to get
banking LQ45 efficiency score. The result is bank LQ45 have efficiency as big as
97,17%.
To see the effect banking efficiency to stock return is done by statistic
test, regression. Model that is used for this research is fixed-effect model (FEM)
with the equation jt jt jt SHR RET =? + ? EFF +? 0 1 _ . After statistic test is done,
the result is banking efficiency is not influential to stock return. That is caused by
using different variables; in regulation that is announced by Indonesian Central
Bank, efficiency only has five percent to ten percent from all factors in calculating
banking health; Investor is more focus to KPMM because it has big weight than
other factors; efficiency can not measure non-perform from credit whereas there is
total loans variabels in efficiency calculating; Indonesian?s investor are still
oriented short term so capital gain is more important.