[isatrader]

Where did you generate that first chart? Also, what is the difference between the two charts. I know they are giving different readings, but I am failing to see the variables that is making them read different.

Go to http://stockcharts.com/freecharts/perf.p...LP,XLV,XLU and you can change the symbols to whatever you want. But to get the histogram chart view you need to click on the "Show Histogram Chart" button under the chart, bottom left.

It's the same chart, but on the second chart I clicked on the $SPX tab, just above the chart - top left, which makes that symbol the baseline, and hence the other readings are then shown relative to that. i.e. Cyclicals were up 32.97% and S&P 500 was up 21.32%, so therefore 32.97% - 21.32% = 11.65%, which you can see on the second chart.

Hopefully that makes sense. But basically you can show any symbol and use that as the baseline, and you can also change the timescale at the bottom using the slider.