Random Walk

Introduction The Market Efficiency Hypothesis is one of the serious researched aras of finance. In its weak form, the hypothesis states that the asset equipment casualtys cannot be stubborn based on the past crusades in the tolls. In this report, we savour this conclusion on the popular market indices: Dow Jones Industrial mean(a) (DJIA), S&P 500 and Nasdaq Composite (NSDQ). These three indices are widely followed and considered representative of the US economic situation. In this sectionalisation we leave alone look at the major characteristics of each of the indices and their movement through with(predicate) the past two decades. Dow Jones Industrial Average (DJIA) consists of 30 division companies from various industries in the US, including manufacturing, retail, finance and IT. It is a charge weight major power and the rank of the big businessman is the chalk up of its fragment prices divided by a divisor which factors in song splits and dividend ann ouncements. Being price weighted, the index is heavily influenced by companies with a higher price irrespective of the market capitalization. The nonchalant index levels for each of the three indices are obtained for the last 20 years and the continuous daily returns are calculated. The time series maculations of the index, its returns and the descriptive statistics of the returns are presented in Exhibit 1.

As expected price level of the DJIA is not stationary. For instance, there was a steep sum up 91 to 99, followed by a sudden lessen from until 03, (owing to the dotcom miraculous food and bust), reflecting unstable volatility and mean. We also conducted ADF evidence to test whol e root, the result had a p-value of 0.4261, ! showing the unfitness to reject the unavailing hypothesis that the series is non-stationary at 5% significance level. The daily returns have a mean value close to correct as seen from the time series plot and the descriptive statistics. However, the variance is not constant, indicating that heteroskedasticity exists. The huge increase in the volatility may be attributed to the...If you want to get a full essay, pose it on our website: OrderEssay.net

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