Portfolio errors in Yahoo Finance - I gave up and deleted. Tech support were not useful.
I had my portfolio saved with Yahoo Finance for over a decade. But I became more active since 2019 and added more transactions and holdings.
I noticed a couple of holdings showing errors in respect to gains. They were in the thousands of %. Clearly wrong. I submitted complaints to ask their tech support to keep fixing it and they gave me several steps to try to fix it. I did this several times. I kept complaining again and I would either get the same steps or different. I ended up trying everything. I stated it was still wrong but ended up in a perpetual 'merry-go-round' of useless solutions.
The portfolio software/website obviously has bugs and needs the developers to fix them all. Tech support appear to be outsourced to people who have no idea but to just offer steps from some list they have.
I gave up using it to track and manage my portfolio. Pity, because I liked it for years. I have deleted it from Yahoo as it is unfortunately a useless portfolio manager. I just have to use the different broker portfolio platforms to track each separately, something I used Yahoo to merge all my holdings into the one.
I just use Yahoo Finance for looking at market data and streaming news. Yahoo Australia Finance version not as good as the US Yahoo Finance as well. But use both.
I would not recommend relying on accurate data and tracking your portfolio with a faulty portfolio management tool with Yahoo Finance. Do at your own risk and mental health.