I ensured Preferences → Investments → Real-time Quotes was unchecked; I even toggled it on, clicked ok, then went and toggled it back off. I also exited and restarted Quicken.
Here is what happens - I have 5 stocks in a Schwab account, the rest are mutual funds from other places. In the morning, pre-market, if I do a OSU with just 'Download quotes and investment information" checked, I get no updated prices for the new day - because the markets are not open.
But if I also check "Download transactions and balances" for all the investments I have, whether or not a new transaction comes down, the 5 stocks have a real-time pre-market price updated, that I do not want and have not selected! This does not happen to the mutual funds, but I think they do not have any published pre-market prices - they only publish prices once a day about 2-3 hours after market close.
This behavior has only started happening recently. I am sorry I do not know when it started, I noticed it but didn't look at it closely until today. It's maybe been happening for a week?
This seems to be a bug - why are the premarket prices coming down for stocks only if Download transactions and balances" is selected?
PS - I did a "Report a problem" from within Quicken for this.