Anderson uses his computer and internet link to chart the movement of his favorite 46 stocks. He buys and sells according to the
analysis he does of the price charts on these stocks. If he can generate consistent abnormal returns in this manner then this is a failure of weak form efficeincy semi-strong form efficeincy strong form efficincy all of the above none of the above
The efficient market hypothesis is a financial theory that puts forward the concept of informational efficiency in capital markets. The weak form of informational efficiency dictates that the past price data and market expectations are already included in the price movements of an asset in a given capital market. If this holds true, then technical analysis (examining historical price data of an asset) will not yield any benefits when evaluating investment decisions. If Anderson can generate abnormal returns via technical analysis then the market is not weak form efficient.
