[isatrader]

Thanks for the prior reply, IsaTrader.

I have another question on Relative Strength. Does each service that provide this have a different version of it? For example, there is the SCTR ranking on StockCharts.com, RS value on MarketSmith and also RSI whcih I guess is something completely different.

Is the RS score on MarketSmith a custom score only on that tool or is this a more widely used rank/score that can be used on other platforms? I can't find it on ProRealTime, they only have RSI.

Yep is different on each service. MarketSmith/IBD RS rating is the stocks percentage compared to all other stocks in the US market that they track in their universe of stocks. So a 99 score means it's done better than 99% of the stocks in the market over the last year. The RS line they use is the same as the Mansfield RS line that we use, as is just a comparison versus the S&P 500. But they don't add a moving average to theirs. Whereas the SCTR score is different as is a combination of indicators, with the longest having a 200 day setting that comes up with the score. But the scores are generally very similar.

RSI is a completely different thing as it is a momentum oscillator that measures the speed and change of price movements on a single stock and doesn't compare against anything else. So is fairly useless for comparative studies and hence not needed.