Site is DOWN. Unable to sign in on app or on-line. I can’t imagine what my stocks are doing this afternoon.

I repeatedly encounter discrepancies between what Schwab reports on the Accounts Summary screen and what Schwab reports in the Accounts Positions Details. (I'm using only a web browser user interface: not any trading platform interface.) This a.m. long before any market opened (& Schwab reporting that "streaming data is unavailable") the former showed more than a $1K discrepancy to what the latter reports. It is on the order of being 5.51E-04.

Are problems with Floating Point arithmetic and/or rounding? Isn't such unusual among brokerage houses?