[Tryst]

You need to change you scale type in the price settings to "Logarithm scale" as it's hard to see the price action in the bases after long declines using standard scaling, as you'll see on the attached same charts, they both had fairly sharp bases on the standard weekly charts, although you are correct that over the very long term they show more curved bases.

Thanks for the suggestion to change to 'Logarithm scale' on the chart.

Do you keep you charts at this setting, or just switch to it to see the price action more clearly at lower levels on shares that have dropped quite a lot?

I see that changing it to Logarithm Scale as put my trendlines out on the chart.