I have an investment account for which the total value is $0.37. Other investment accounts have a total value of zero (unfolded view). Does anybody know where this small amount comes from?

Do you see anything on the ledger for that account?

I did not find anything, but the ledger is quite long. Is there a type of activity I should be looking for? What is the Total Value of an investment account, or how is it computed? Can I get a Chart of it? That would show the date.

BTW Investment Holdings Pie, Report Tab, shows zeroes over the entire life of the account.

I think you should file a bug for this. That balance seems to be wrong.

I think figured it out. I imported some activity on a stock I had not yet defined (btw gnucash will ask you to create the stock on the fly in such a case). It seems like KMM imported "Add Share" activities anyway, leaving the security name blank. Deleting these orphans took care of the issue. Would that still count as a code bug? This was QIF import.

Yes, that's a bug. Can you please report it?