This paper investigates the weak-form of market efficiency using the Malaysian Stock Exchange over a period of January 1991 to December 2006. The long-spanning data set enabled us to study piecewise before and after the economic crisis encountered by the Malaysian stock market. Using the daily price index. the weak-form efficiency is examined according to the price. https://parisnaturalfoodes.shop/product-category/super-cod-liver-oil/