This research examines the impact of market risk premium, size, book-to-market equity, profitability, and investment as risk factors on stock return. Portfolios are formed to develop the left-hand side and right-hand side portfolios. The objective of this paper is to assess the performance of the equity market and to enhance the generalizability of the five-factor model. A statistical analysis is applied to estimate the asset pricing model to assess their performance in the Association of Southeast Asian Nations (ASEAN) equity market. The researchers found that there were value premiums in the average stock returns in all the countries except Malaysia. Traces of profitability premium can be observed in Malaysia, Thailand and Indonesia. However, there was no evidence of investment premiums in any of the countries. The study examines whether the asset pricing models capture the value, profitability and investment patterns in the capital market. The five-factor model performs better than the three-factor model in explaining the average excess returns of the size–BM (book-to-market) and size–profitability portfolios. However, the five-factor model fares poorly in explaining the average excess returns of the size–investment portfolios.