Up 20% this year, are Rio Tinto shares still good value?

Rio Tinto Ltd (ASX: RIO) has had a pretty impressive 2026 so far. The shares are up around 20% since the start of the year and more than 50% over the past 12 months. The shares climbed as high as $195.84 earlier this year before falling back towards $160 in late July. Since then, the stock has worked its way higher again and is trading at $175.65 on Friday, down 0.82%. So, do Rio Tinto shares still look like good value? The shares aren’t exactly cheap I don’t think the shares look especially cheap at current levels, but I also…