The OHLC daily data for ^N225 (https://finance.yahoo.com/quote/%5EN225/history?p=%5EN225) is incorrect. That day was a holiday in japan and so the index never traded in such a huge range. Actually there should be no data at all for this day as is was a holiday, see google data (*Link Removed - See the community guidelines for more information.*)
Hi - Thanks for the report. I have confirmed the error and we will work with our data provider to have the information corrected. Thank you.
Very sorry for the delay on resolving this one. I see the ticket is still open. I'm going to assign the ticket to an engineering manager to get some traction on it. Again, we are sorry for the delay and hope to have it fixed soon.