Return on Asset (ROA) is a variable that has the greatest ability in predicting public banks stock prices in
Indonesia. The coefficient of determination of ROA on public banks stock prices in Indonesia reached 54.8%.
ROA has a significant positive influence on public bank stock prices in Indonesia. Fuzzy logic process on the
performance of the 15 public banks in Indonesia have been carried out using the data of ROA for the period
2010 up to 2013. Bank reference performance according to ROA is based on Bank Indonesia Letter No. 6 /
23DPNP / 2011. The performance of each bank was analyzed by conventional methods and as a comparison
used fuzzy logic. The evaluation with fuzzy logic method able to provide added value to the currently enforced
performance evaluation method. There is significant difference in conclusion between the determination of
fuzzy logic models and conventional method.
Keywords: ROA, Conventional methods, Fuzzy logic