I've created some charts to show year-to-date performance of various ETFs/indices.

I want to use the ruler to indicate percentage gain/loss since the close of 12/31/12, so I select the ruler to "center on left of chart."

Setting the left side of the chart to 12/31/12 using the slider bar at the bottom of the chart can be a bit tricky given your mouse sensitivity. 

So I would like to click on the "YTD" timeframe option at the bottom of the chart, which I presume is why it's there.

What happens though, is clicking on the YTD timeframe option starts the chart at 12/28/12, not 12/31/12 so the percentage ruler scale is off by a trading day.

I can understand why it was probably done the way it was... to display the whole candle for the first trading day of the year (the 12/28 candle is cut in half).

But it does complicate creating an accurate YTD percentage ruler.

Any suggestions for an easier work around, or maybe it's a product change suggestion.

Here are charts describing what I'm seeing....

Manually setting the start date to 12/31 using the slider bar:

Setting the start of the chart using the "YTD" option:

Thank you for your suggestion. It has been assigned case number 10229.