Product Review: StockCharts.com by Technical Analysis, Inc.
tockCharts.comís website has consistently won the Stocks & Commoditiesí Readersí Choice Award for Best Technical Analysis Website over the last seven years. The principal products offered by StockCharts.com are charting, market analysis, and technical analysis explanations/definitions. Market analysis covers several areas: sector analysis, newsletters, blogs, and Market Carpet, a visual presentation of marketwide data for user-selected dates and time spans, unique to StockCharts.com.
Charting is free and for a fee (ExtraRT! Charting: $34.90 a month), the data is real-time with no delays. StockCharts takes pride in its accuracy. One example is a calculation done by almost all packages and websites, namely an exponential moving average (Ema). If you look at the actual definition of an Ema, youíll find that the period translates to a percentage used in weighting each item, such as daily closing prices, and that the calculation is basically unlimited in terms of how far back in time it goes. From a practical standpoint, it is usually not necessary to go back any more than what is on the chart. StockCharts.com goes at least n + 250 additional periods beyond the left edge of the chart when calculating an n-period Ema.