Corrections
Report a data or formula problem
Send the page address, the provider's page that shows the right figure, what you saw, and why our result is wrong.
What happens next
- We check the provider's page and the date we last read it.
- We find where the mistake came from.
- We recalculate the result and check every page it appears on.
- We add a dated note to the changelog naming the page we fixed.
Old links keep their inputs, not their answer
A shared link saves the inputs, never the result. Opening an older link after a correction or a price change works the answer out again from today's prices, so it can differ from what was seen when the link was made. The changelog records what changed and when.