Please note that this should still be considered a work in progress or a beta version. If you find any bugs or have any suggestions, please don't hesitate to contact me.
Sector Strength is one of the tools I use to get a quick update on what sectors and currencies performed over different time horizons. Here's what it looks like:
It's pretty intuitive and easy to understand.
The table on the left contains the performance of each of the different ETFs over a different timeframe. The chart below shows the last 200 daily closes of the ES as a black line and how many of the sector ETFs had a positive 30-day performance at that time in relative terms.
The chart in the middle displays sector performance graphically, and the chart on the right shows currency performance.