Efficient Market Exercise

Jenny Liar, the famed analyst, was informed, at a luncheon date with her husband General (US army retired) Bull Liar, that the General's company Wekillum Inc. was about to receive a ten billion dollar war goods contract from the pentagon. When Jenny returned to her office, she immediately contacted her "A" list clients and told them to buy Wekillum. The company's stock soared in afternoon trading. Carefully assess the efficiency of the market.