What’s going on with the Rio Tinto (ASX:RIO) share price today?

The S&P/ASX 200 Index (ASX: XJO) is having a pretty momentous day today. On the surface, the ASX 200’s 0.66% gain (at the time of writing) doesn’t look like much to write home about. But this gain means that the ASX’s flagship index is now at a post-COVID high. And we’ll only need another 1% or so to exceed the pre-COVID high on top of today’s levels from February 2020 as well. But one ASX blue chip is performing even better than the ASX 200 today. And that’s the Rio Tinto Limited (ASX: RIO) share price.

While the ASX 200 is up 0.66%, Rio shares are up a decent 3.04% today to $117.80 a share. That’s still not quite at Rio’s all-time high of $130.30 that we saw back in late February. But it’s also a good 10% above…