Moving Average Analysis of ERTS

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From the Weekend Report 11/5/2010: Phase four of the MACD sequence is at least mildly bullish because the stock may get a boost as it approaches the 200 session moving average. Currently the stock is -3.00 % below that line, but the distance narrowed over the week.

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This page looks at the predictive abilities of different methods of averaging applied to ERTS stock prices. Techniques available include moving weighted or exponential averages of various periods and the family of MACD (Moving Average Convergence Divergence) indicators.

Unfortunately, some of the most popular indicators of this type can prove to be the worst forcasting indicators. The next page tests the effectiveness of these methods as predictors of future prices for ERTS.

The 200 session average is red, the 20 bar, green. The un-sophisticated moving averages plotted here are un-weighted, but they still may return better results than many of the more popular, highly tuned averages seen in some of the following sections. It is always possible to fine tune an exponential or other weighted average so that it seems to outperform a simple average in a given situation. However, over-tuning can increase false and misleading indicators. Norman Fosback pointed out that a legitimate signal should be one that is clearly evident through a variety of averaging methods.

Moving Average Convergence of Electronic Arts Inc.

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MACD analysis would appear perfect for overtuning, since it may use any of an infinite number of averaging methods and coefficients. In addition to crossover signals from various moving averages, analysts frequently add a trigger line based on some average of the first two averages. Here we depict the results of 12 and 26 session Exponential Moving Averages. The exponential coefficient used here is .18. There is nothing magic about these parameters, but these are frequently seen.

Float the cursor for a longer term chart.

Moving Average Convergence Divergence, or MACD, produces buy or sell signal that are color tinted here.

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Moving Avg. 20/200 Divergence	Signaled Appreciation minus non-signaled Appreciation	Annualized %
Buy Signals - 26 instances
Future30SesAvgClose	0.97 % minus 1.51 % = -0.54 %	-4.55 %
Future5SesAvgClose	-0.01 % minus 0.32 % = -0.33 %	-16.89 %
Future2SesAvgClose	-0.49 % minus 0.17 % = -0.66 %	-83.69 %
Sell Signals - 25 instances
Future30SesAvgClose	-0.08 % minus 1.51 % = -1.59 %	-13.43 %
Future5SesAvgClose	0.32 % minus 0.32 % = 0.00 %	-0.12 %
Future2SesAvgClose	0.40 % minus 0.17 % = 0.23 %	28.87 %
	.
Moving Avg. 5/20 Divergence	Signaled Appreciation minus non-signaled Appreciation	Annualized %
Buy Signals - 151 instances
Future30SesAvgClose	2.41 % minus 1.51 % = 0.90 %	7.63 %
Future5SesAvgClose	1.30 % minus 0.32 % = 0.98 %	49.78 %
Future2SesAvgClose	0.73 % minus 0.17 % = 0.56 %	71.29 %
Sell Signals - 151 instances
Future30SesAvgClose	1.82 % minus 1.51 % = 0.31 %	2.64 %
Future5SesAvgClose	0.36 % minus 0.32 % = 0.04 %	1.82 %
Future2SesAvgClose	0.48 % minus 0.17 % = 0.31 %	39.59 %
	.
Moving Avg. 5/200 Divergence	Signaled Appreciation minus non-signaled Appreciation	Annualized %
Buy Signals - 47 instances
Future30SesAvgClose	1.49 % minus 1.51 % = -0.02 %	-0.17 %
Future5SesAvgClose	1.70 % minus 0.32 % = 1.38 %	70.07 %
Future2SesAvgClose	1.86 % minus 0.17 % = 1.69 %	214.03 %
Sell Signals - 46 instances
Future30SesAvgClose	-0.41 % minus 1.51 % = -1.91 %	-16.20 %
Future5SesAvgClose	-1.02 % minus 0.32 % = -1.34 %	-67.92 %
Future2SesAvgClose	-1.43 % minus 0.17 % = -1.60 %	-202.71 %
	.
MACD 12/26 Divergence	Signaled Appreciation minus non-signaled Appreciation	Annualized %
Buy Signals - 527 instances
Future30SesAvgClose	1.48 % minus 1.51 % = -0.02 %	-0.20 %
Future5SesAvgClose	0.15 % minus 0.32 % = -0.17 %	-8.83 %
Future2SesAvgClose	0.07 % minus 0.17 % = -0.10 %	-13.05 %
Sell Signals - 527 instances
Future30SesAvgClose	1.75 % minus 1.51 % = 0.24 %	2.04 %
Future5SesAvgClose	0.38 % minus 0.32 % = 0.06 %	3.19 %
Future2SesAvgClose	0.13 % minus 0.17 % = -0.04 %	-4.85 %
	.
MACD 12/26 Signal	Signaled Appreciation minus non-signaled Appreciation	Annualized %
Buy Signals - 724 instances
Future30SesAvgClose	1.92 % minus 1.51 % = 0.42 %	3.52 %
Future5SesAvgClose	0.53 % minus 0.32 % = 0.21 %	10.59 %
Future2SesAvgClose	0.25 % minus 0.17 % = 0.08 %	9.59 %
Sell Signals - 723 instances
Future30SesAvgClose	1.56 % minus 1.51 % = 0.05 %	0.46 %
Future5SesAvgClose	0.25 % minus 0.32 % = -0.07 %	-3.49 %
Future2SesAvgClose	0.17 % minus 0.17 % = 0.00 %	0.37 %
	.
Calibrated M by Q Half Cycle Moving Avg.	Signaled Appreciation minus non-signaled Appreciation	Annualized %
Buy Signals - 312 instances
Future30SesAvgClose	1.81 % minus 1.51 % = 0.30 %	2.54 %
Future5SesAvgClose	-0.04 % minus 0.32 % = -0.36 %	-18.26 %
Future2SesAvgClose	-0.16 % minus 0.17 % = -0.33 %	-41.81 %
Sell Signals - 312 instances
Future30SesAvgClose	3.15 % minus 1.51 % = 1.64 %	13.89 %
Future5SesAvgClose	1.08 % minus 0.32 % = 0.76 %	38.78 %
Future2SesAvgClose	0.54 % minus 0.17 % = 0.37 %	47.05 %
	.
Calibrated M by Q Full Cycle Moving Avg.	Signaled Appreciation minus non-signaled Appreciation	Annualized %
Buy Signals - 198 instances
Future30SesAvgClose	-0.50 % minus 1.51 % = -2.01 %	-17.00 %
Future5SesAvgClose	-0.36 % minus 0.32 % = -0.68 %	-34.69 %
Future2SesAvgClose	-0.18 % minus 0.17 % = -0.35 %	-44.07 %
Sell Signals - 198 instances
Future30SesAvgClose	0.40 % minus 1.51 % = -1.11 %	-9.42 %
Future5SesAvgClose	0.85 % minus 0.32 % = 0.52 %	26.64 %
Future2SesAvgClose	0.71 % minus 0.17 % = 0.54 %	68.99 %
	.
Projected Crossing of SMA 20/200.	Signaled Appreciation minus non-signaled Appreciation	Annualized %
Buy Signals - 37 instances
Future30SesAvgClose	0.48 % minus 1.51 % = -1.03 %	-8.74 %
Future5SesAvgClose	0.77 % minus 0.32 % = 0.45 %	22.77 %
Future2SesAvgClose	0.89 % minus 0.17 % = 0.71 %	90.71 %
Sell Signals - 35 instances
Future30SesAvgClose	1.53 % minus 1.51 % = 0.02 %	0.15 %
Future5SesAvgClose	-0.39 % minus 0.32 % = -0.71 %	-35.97 %
Future2SesAvgClose	-0.43 % minus 0.17 % = -0.60 %	-76.45 %
	.
Projected Crossing of SMA 5/20.	Signaled Appreciation minus non-signaled Appreciation	Annualized %
Buy Signals - 179 instances
Future30SesAvgClose	2.45 % minus 1.51 % = 0.94 %	7.96 %
Future5SesAvgClose	0.47 % minus 0.32 % = 0.15 %	7.72 %
Future2SesAvgClose	0.32 % minus 0.17 % = 0.15 %	18.50 %
Sell Signals - 144 instances
Future30SesAvgClose	-0.31 % minus 1.51 % = -1.82 %	-15.39 %
Future5SesAvgClose	-0.95 % minus 0.32 % = -1.27 %	-64.54 %
Future2SesAvgClose	-0.66 % minus 0.17 % = -0.83 %	-105.98 %
	.

The best buy signal for 30 future sessions was 0.94 % from the Projected Crossing of SMA 5/20.,and the best sell signal for was -1.91 % from the Moving Avg. 5/200 Divergence.

For 5 future sessions the best buy signal was 1.38 % from the Moving Avg. 5/200 Divergence,and the best sell signal was -1.34 % from the Moving Avg. 5/200 Divergence.

The best buy signal for 2 future sessions was 1.69 % from the Moving Avg. 5/200 Divergence,and the best sell signal was -1.60 % from the Moving Avg. 5/200 Divergence.

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