A rule that has held up well is that successful traders tend to look at unique data and look at common data in unique ways. It's pretty difficult to distinguish ourselves from the herd if we're part of what the herd is looking at and listening to each day. Some of the best traders I know view unique data uniquely. That means they're looking at things others aren't.

Above we see an indicator created by tracking every stock listed on the NYSE and whether it is giving a buy signal, no signal, or a sell signal on the Parabolic SAR system created by Wilder. The indicator, in red above, simply cumulates the buy signals minus the sell signals and keeps them as a running total, like an advance-decline line. I scrape the raw data from the excellent Stock Charts site daily.