Verifying I am possibly the 10 millionth user having this problem [figuring that the vast majority of victims don't post]. Vanguard/Fidelity fund prices not updating most all this week and as of 9 PM ET Friday 08/21/2020, either via OSU or Update Quotes under that account.
I have both Vanguard and Fidelity and the problem is slightly different --
Fidelity shows an entry for 08/21 but has the price from 08/20.
Vanguard shows only yesterday's (08/20) entry and price, no entry for 08/21, so shows the clock symbol.
Two separate bugs? Yeah, I'm on the latest release but like others, feels like a server-side issue. So, please re-re-re-escalate this to someone who can fix it.